Gestion de l'alimentation
Sous-catégories
Produits (2819)
TLE42662GSV33HTMA2 - 3.3V 150mA LDO Regulator | Infineon OPTIREG
The Infineon TLE42662GSV33HTMA2 is a monolithic low-dropout fixed voltage regulator that delivers up to 150 mA of output current at a factory-trimmed 3.3 V rail, housed in a 4-pin PG-SOT223-4 (TO-261-4) surface-mount package with an exposed thermal tab. It accepts an input voltage range of 4.4 V to 45 V, exhibits a typical dropout voltage of approximately 1 V at full load, and integrates an INH (inhibit) pin for on/off control with very low standby current. The device is part of Infineon's OPTIREG LINEAR automotive-qualified product family, qualified to AEC-Q100, and is targeted at always-on 12 V/24 V vehicle power nets. An LDO (Low-Dropout) linear regulator is a member of the linear voltage regulator family that maintains a tightly regulated output even when the input voltage is only marginally higher than the desired output. Within the broader taxonomy, an LDO sits below standard NPN regulators and above simple Zener shunts; it shares the linear regulator category with high-PSRR audio LDOs and low-Iq nanopower parts, and is itself part of the power management IC hierarchy that also includes DC-DC converters, supervisors, and battery management ICs. LDOs differ from switching regulators in that they dissipate the VIN - VOUT difference as heat, but in exchange they introduce no switching ripple and require only input/output capacitors. Key features of the TLE42662GSV33HTMA2 include a fixed 3.3 V output with ±2 % accuracy, 150 mA continuous load capability, sub-1 µA quiescent current in OFF mode, and approximately 40 µA quiescent current in ON mode, plus integrated overtemperature shutdown and reverse-polarity robustness. The wide 45 V input margin tolerates 24 V automotive jump-start and load-dump transients without additional front-end protection, simplifying ECU and sensor harness designs. Technically, the regulator uses a monolithic bipolar architecture with an integrated pass transistor sized for the 150 mA load. The INH pin implements logic-level shutdown that drops Iq below 1 µA, supporting battery-save strategies when the ECU is parked. The exposed thermal tab on the SOT-223 package provides a low thermal resistance path (~70 C/W on a standard 2-layer 1 oz PCB) so that full-load dissipation can be handled without an external heatsink in typical automotive ambient temperatures. Typical applications include automotive body and chassis ECUs, sensor supplies (Hall, pressure, position), infotainment keep-alive rails, CAN/LIN transceiver power, and any 12 V/24 V always-on node that needs a quiet 3.3 V rail with very low standby drain. When designing with this part, observe the SOA at high VIN (45 V) where full-load dissipation can exceed 6 W, and follow Infineon's recommended 100 nF + 10 µF input/output capacitor combination for stability.
TLE4267GATMA1 - 5V 400mA Automotive LDO Regulator | Infineon
The Infineon TLE4267GATMA1 is a 5 V fixed-output low-dropout (LDO) linear regulator delivering up to 400 mA of output current for automotive and industrial applications, housed in a 7-pin PG-TO263 (D2PAK) surface-mount package with exposed thermal tab. It operates from a wide 5.5 V to 45 V input range, supplies a regulated 5 V output with typical ±2% accuracy, and provides a low dropout voltage of approximately 300 mV at full 400 mA load. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is small - typically 100 mV to 500 mV. Within the broader power-management hierarchy, LDOs belong to the linear regulator family, which sits alongside switching regulators (buck/boost) and charge pumps. Unlike switching converters, LDOs dissipate VIN - VOUT as heat, but produce no switching ripple, making them ideal for post-regulation after a switching stage and for noise-sensitive analog rails. The TLE4267GATMA1 features a typical quiescent current of around 1 mA in normal operation, an inhibit (enable) input for power sequencing, short-circuit protection, and overtemperature shutdown. It is part of the Infineon OPTIREG linear regulator family, designed specifically for automotive ECU power rails where cold-crank transients, load-dump surges, and wide battery voltages are routine. The PG-TO263-7 (D2PAK) package provides a low thermal resistance path through the tab, allowing sustained 400 mA output without a heatsink in well-designed PCBs. The regulator uses a bipolar pass-transistor architecture with a bandgap reference and error amplifier. The wide input range tolerates the harsh automotive 12 V / 24 V bus including load-dump pulses up to 45 V, while the Enable (Inhibit) pin allows direct microcontroller control for low-power modes. AEC-Q100 qualification makes it suitable for under-hood and body-electronics modules where reliability is mandatory. Typical applications include automotive ECU power supplies, body-control modules, instrument clusters, and infotainment system rails, as well as industrial 24 V sensor/actuator power conditioning where the 5 V rail must stay clean during large input transients. When designing with the TLE4267GATMA1, ensure the input ceramic capacitor is placed within 5 mm of the IN pin to handle high dI/dt events and that the tab is soldered to at least 1 cm squared of copper for thermal relief. Avoid reverse-polarity scenarios, and use the Inhibit pin rather than cycling VIN if the host MCU wants to save power. This page synthesizes distributor pricing (as of 2026-09-15), same-family Infineon drop-in alternatives, and practical PCB/thermal design notes not collected in the manufacturer datasheet alone.
TLE4267GMXUMA1 - 5V 400mA LDO Regulator | Infineon | AEC-Q100
The Infineon TLE4267GMXUMA1 is a 5 V low-dropout (LDO) voltage regulator delivering greater than 400 mA of output current in a 14-pin PG-DSO-14-30 (SOIC-14) surface-mount package, qualified to AEC-Q100 for automotive applications. It accepts input voltages up to 40 V (5.5 V to 40 V operating range), regulates to a fixed 5 V nominal output with a typical dropout below 500 mV at full load, and integrates a programmable reset generator that asserts when VQ drops below VRT (typ. 4.5 V). An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage headroom approaches the pass element's saturation limit. Unlike switching converters, LDOs dissipate excess input voltage as heat but add no switching noise, making them ideal for noise-sensitive analog and microcontroller rails. Within the broader power management hierarchy, the TLE4267GMXUMA1 belongs to the linear regulator family, itself a sub-category of voltage regulators inside automotive-grade power management ICs. Key features include an inhibit input (active-HIGH enable), an E2 logic input for ignition-aware turn-on, a reset output with externally programmable delay capacitor, short-circuit protection, overtemperature shutdown, and a wide operating junction temperature range up to 150 C. The PG-DSO-14-30 package provides an exposed thermal pad that lowers junction-to-ambient thermal resistance, enabling sustained 400 mA output at elevated ambient temperatures typical of under-hood automotive environments. Internally, the TLE4267GMXUMA1 uses a PNP pass transistor architecture with a precision bandgap reference and an integrated reset comparator. The reset delay is set by an external capacitor on the DELAY pin, giving designers flexibility to match microcontroller power-on-reset timing requirements. The device is part of Infineon's OPTIREG linear regulator family. Typical applications include automotive body electronics, ECU and microcontroller power supplies, sensor bias rails, infotainment systems, and industrial 24 V bus regulators. Designers favor this part where a 5 V rail must survive load-dump transients up to 40 V on the input without a pre-regulator. When designing with this device, place a 100 nF ceramic input capacitor close to the IC's I pin and a 10 uF minimum output capacitor for regulator stability. The exposed pad must be soldered to a sufficiently large copper pour to keep junction temperature within ratings at maximum dissipation. This page synthesizes Infineon datasheet specifications, distributor pricing snapshots, drop-in automotive-grade alternatives, and practical design notes not consolidated in any single source.
TLE4267GMXUMA2 - 5V 400mA Automotive LDO Regulator | Infineon
The Infineon TLE4267GMXUMA2 is a 5V fixed-output, low-dropout (LDO) linear voltage regulator delivering up to 400 mA of output current in a 14-pin PG-DSO-14 (also referenced as DSO-14) surface-mount package. It is qualified to the AEC-Q100 automotive standard, supports a maximum input voltage of 40V, and exhibits a maximum dropout of 0.6V at 400 mA, making it suitable for the harsh 12V/24V automotive bus environment. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is small. Within the broader power-management hierarchy, LDOs sit beneath switching regulators and form part of the larger family of linear regulators. They are valued for low noise, simplicity, and the absence of switching EMI, at the cost of dissipating VIN-VOUT x IOUT as heat. Key features of the TLE4267GMXUMA2 include a fixed 5V output with 2% accuracy, an inhibit (enable) input for low-IQ standby control, an integrated reset/watchdog circuit with programmable delay, short-circuit protection, and overtemperature shutdown. The device also provides an early-warning output to signal battery undervoltage before the regulator drops out of regulation, which is critical for ECU power-good sequencing. The TLE4267GMXUMA2 uses a bipolar pass-element architecture that delivers excellent line and load transient response while consuming only a few hundred microamps of quiescent current in normal operation. This makes it suitable for always-on automotive applications where standby current directly impacts battery drain. Typical applications include body control modules, instrument clusters, HVAC controllers, infotainment head units, gateway ECUs, and sensor power rails in 12V and 24V automotive systems. The wide 40V input transient tolerance allows it to survive load-dump events without external TVS protection in many designs. When designing with this part, place the input and output ceramic capacitors as close to the IC as possible to ensure stability, and follow the recommended ESR range from the manufacturer datasheet to avoid loop instability. Series inductance on the input must be minimized to handle automotive transient pulses. This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.
TLE42694EXUMA1 - 5V 150mA Auto LDO w/ Reset | Infineon
The Infineon TLE42694EXUMA1 is a monolithic integrated low-dropout (LDO) linear voltage regulator designed for automotive applications, delivering a fixed 5.0 V output at up to 150 mA load current from an input rail as high as 45 V. It is housed in a PG-SSOP-14-2 surface-mount package with exposed pad, qualified to the AEC-Q100 standard for automotive electronics. The device integrates a microcontroller-compatible reset generator with programmable delay, short-circuit proof output current limitation, and integrated overtemperature shutdown, providing a robust supply plus supervisory chain in a single IC. What is an LDO (Low-Dropout) regulator? An LDO is a type of linear voltage regulator that maintains a regulated output voltage even when the input-to-output voltage differential (dropout) is small, typically a few hundred millivolts. LDOs are a sub-category of linear regulators, themselves part of the broader voltage regulator family within power management ICs. Compared with switching regulators, LDOs do not switch, do not generate EMI, and have a smaller footprint, but dissipate the difference (VIN - VOUT) x IOUT as heat. The TLE42694E belongs to the OPTIREG™ Linear family of Infineon automotive regulators. Key specifications include a maximum input voltage of 45 V, a fixed 5.0 V output, a maximum dropout of 0.5 V at 100 mA, and very low quiescent current in normal operation. The reset circuit provides an active-low power-good signal with adjustable delay, eliminating the need for an external reset supervisor. The exposed pad on the SSOP-14 package improves thermal dissipation, allowing sustained 150 mA output across the automotive temperature range without an external heatsink. Architecturally the part uses a PNP pass transistor topology with on-chip bandgap reference and current-limit foldback. The internal reset comparator monitors the regulated output with a well-defined threshold hysteresis and is immune to brief transients from the load. Internal thermal protection trips at approximately 175°C junction temperature with hysteresis to recover automatically. The reset delay is programmed by a single external capacitor on the DLY pin. Typical applications include automotive body and chassis ECUs, instrument clusters, HVAC control modules, sensor power supplies, and other 12 V board-net loads that require a stable 5 V rail with a power-good reset for an attached microcontroller. Wide VIN tolerance allows direct connection to a 12 V or 24 V automotive bus without pre-regulation. When designing with this LDO, always place input/output ceramic capacitors close to the pins and respect the absolute maximum VIN of 45 V including load-dump transients. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within the AEC-Q100 derating window. This page synthesizes Infineon distributor pricing, automotive-grade drop-in equivalents, and practical reset-design notes that are not collected in a single place on the manufacturer datasheet.
TLE42694GMXUMA1 - 5V/150mA Automotive LDO | Infineon
The Infineon TLE42694GMXUMA1 is a monolithic integrated low-dropout (LDO) voltage regulator in a 14-pin PG-DSO-14 surface-mount package, delivering a fixed 5.0 V output at up to 150 mA load current. It accepts a wide input voltage range up to 45 V, tolerates load-dump transients typical of 12 V and 24 V automotive buses, and regulates to 5.0 V with ±2 % accuracy across the full automotive temperature range. The integrated pass element and control block are designed for robustness under cold-crank and jump-start conditions. An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage. Within the broader power-management IC hierarchy, LDOs sit beneath DC-DC converters and switching regulators, offering lower noise, faster transient response, and a smaller PCB footprint at the cost of lower efficiency. The TLE42694 family specifically targets automotive point-of-load regulation, supplying microcontroller, sensor, and CAN transceiver rails directly from the vehicle battery net. Key features of the TLE42694GMXUMA1 include a very low quiescent current in normal operation, an enable/reset function with adjustable reset delay for power-good supervision, integrated protection such as current limit and overtemperature shutdown, and a wide operating temperature range qualified for automotive use. The PG-DSO-14 package provides adequate thermal headroom for the 150 mA continuous load rating, and the device is qualified to the Infineon automotive-grade reliability flow. Architecturally, the TLE42694 uses a monolithic bipolar process with an internal bandgap reference and a PNP/DMOS-style pass element that achieves the low-dropout behavior required for cold-crank survival (battery voltages momentarily dipping below 6 V while still needing a 5 V rail). The reset circuit monitors the output voltage and pulls the reset pin low whenever VOUT falls below the programmed threshold, providing a deterministic power-on signal for downstream microcontrollers. Typical applications include automotive body and powertrain ECUs, sensor interfaces, instrument-cluster supplies, and infotainment subsystems where a quiet, post-protected 5 V rail is required. It is also used as an auxiliary post-regulator after a switching pre-regulator to suppress switching ripple on noise-sensitive analog sections. The wide input range makes it equally suited to 12 V passenger vehicles and 24 V commercial vehicles. When designing with this device, observe the minimum input-to-output headroom required to maintain regulation during cold-crank, and follow the datasheet recommendation for input/output capacitance to ensure stability. The reset pin can be left open if unused, but a pull-up resistor is typically required. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in cross-reference alternatives in the same PG-DSO-14 footprint, and practical design notes not aggregated on any single manufacturer page.
TLE42694GMXUMA2 - 5V 100mA LDO Auto Reg | Infineon
The Infineon TLE42694GMXUMA2 is a monolithic integrated low-dropout (LDO) linear voltage regulator delivering a fixed 5.0 V output at up to 100 mA (with 150 mA drive capability per the family datasheet) from a wide 5.5 V to 45 V input range, housed in a 14-pin PG-DSO (DSO-14) surface-mount package with an exposed thermal pad. An LDO (low-dropout) linear regulator is a member of the linear regulator family inside the broader voltage regulator / power management IC hierarchy. Unlike a switching converter, an LDO burns the excess input-to-output voltage as heat and therefore requires a small dropout margin between VIN and VOUT. Its key engineering value is ultra-clean output, very low quiescent current, and a minimal external BOM — qualities that make LDOs the preferred post-regulator for noise-sensitive rails. Key features of the TLE42694GMXUMA2 include integrated over-temperature shutdown, output current limitation (short-circuit protection), a reset/watchdog output for microcontroller supervision, and an enable input for power sequencing. According to the manufacturer datasheet, the part is qualified for automotive use, supports an operating junction temperature up to 150 °C, and offers very low quiescent current in standby — making it well-suited to always-on ECU rails that must remain alive in key-off conditions. Architecturally, the regulator uses a PNP pass element topology optimized for low dropout and low Iq. The integrated reset circuit monitors the 5 V output and asserts a reset signal to the host MCU if VOUT falls below a defined threshold — a critical function in automotive microcontrollers where uncontrolled code execution during a brown-out is unacceptable. Typical applications include automotive body and powertrain ECUs, instrument clusters, HVAC control modules, sensor power, and any 12 V/24 V automotive subsystem that needs a clean, supervised 5 V rail. Industrial PLCs, white-goods control boards, and battery-powered telemetry nodes with wide-input requirements also benefit from this part. When designing with the TLE42694GMXUMA2, follow Infineon's automotive EMC layout guidelines: place input/output capacitors close to the IC, keep the thermal pad soldered to a sufficient copper pour, and verify reset-timing capacitor selection against your MCU's reset-pulse-width requirement. This page synthesizes distributor pricing across DigiKey and Mouser, drop-in same-family and cross-brand alternatives, and practical design notes not aggregated on the manufacturer datasheet.
TLE4270-2D - 5V 650mA LDO Regulator, 42V Input | Infineon
The Infineon TLE4270-2D is a 5 V low-drop fixed-voltage linear regulator that delivers up to 650 mA of output current from a maximum input voltage of 42 V (with 65 V transient capability for ≤ 400 ms). Housed in a TO-252-5-11 (DPAK) surface-mount package with a tab for thermal dissipation, the device regulates the output within ±2 % accuracy up to 26 V input and 650 mA load. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage through a low-dropout pass element. LDOs sit within the broader power management hierarchy as linear regulators, below switching DC-DC converters in efficiency but above Zener diodes in accuracy and regulation. They are preferred for noise-sensitive analog rails because, unlike switching converters, they introduce no switching ripple. Key features of the TLE4270-2D include integrated overvoltage protection, reverse-polarity protection, overtemperature shutdown, short-circuit current limiting, and ±2 kV HBM ESD protection. The reset functionality with adjustable reset delay and wide operating temperature range make it especially suited to automotive electronics where transients and load-dump events are common. The output voltage tolerance of ≤ ±2 % is maintained across the operating envelope, and the device is short-circuit-proof. Internally, the TLE4270-2D uses a bipolar pass transistor architecture with a precision bandgap reference, achieving the combination of high input voltage tolerance, low quiescent consumption, and robust automotive transient immunity. The integrated reset circuit generates a power-on reset signal with programmable delay, allowing microcontrollers to supervise the 5 V rail directly. Typical applications include automotive body and chassis ECUs, industrial PLC I/O supplies, sensor bias rails, microcontroller 5 V supplies with reset supervision, and point-of-load regulation following a switching pre-regulator. The wide input range makes it tolerant of load-dump and jump-start transients in 12 V automotive systems. When designing with this device, place input and output capacitors close to the pins to ensure stability and transient response. The DPAK tab must be soldered to a sufficient copper pour (typically ≥ 1 square inch) for thermal dissipation under high VIN − VOUT × IOUT conditions. The reset delay is programmed with an external timing capacitor. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TLE4270-2G - 5V 650mA LDO Regulator 42V | Infineon
The Infineon TLE4270-2G is a 5 V fixed-output low-dropout linear voltage regulator in a 5-pin TO-263 (PG-TO263-5-1) surface-mount package, capable of delivering up to 650 mA of output current with ±2% output voltage tolerance. It accepts a maximum input voltage of 42 V in continuous operation (65 V transient for ≤ 400 ms), regulates the output within the ±2% accuracy band up to 26 V input at full 650 mA load, and integrates short-circuit current limiting that engages above 650 mA. The device also incorporates overvoltage protection, thermal shutdown, and reverse-polarity robustness for harsh 12 V / 24 V automotive and industrial buses. An LDO (Low-Dropout) linear regulator is a member of the linear regulator family, which in turn belongs to the broader category of voltage regulators inside power management ICs (PMICs). Unlike switching converters, an LDO dissipates VIN−VOUT as heat and adds no switching noise to the output, which makes it preferable for low-noise analog rails where a small dropout is acceptable. The TLE4270-2G sits at the high-input-voltage end of the LDO hierarchy, designed specifically for automotive 12 V/24 V bus environments that can see load-dump transients of 65 V. Key features include ≤ ±2% output tolerance across the operating range, 650 mA continuous output current capability, integrated short-circuit and overvoltage protection, thermal shutdown with hysteresis, low quiescent current suitable for always-on standby rails, and a wide operating temperature range qualified for automotive use. The TO-263-5 package with an exposed power tab provides low thermal resistance suitable for surface-mount PCB layouts without an external heatsink at moderate dissipation. The regulator uses a PNP-Darlington pass architecture with on-chip trimming to achieve ±2% output accuracy, current foldback limiting, and an internal reference stabilized across temperature. Its 42 V continuous / 65 V transient rating is specifically tailored to absorb ISO 7637-style automotive transients, simplifying the upstream protection network on 12 V and 24 V boards. Typical applications include automotive body and chassis ECUs, 24 V industrial sensor supplies, CAN/LIN transceiver rails, and always-on standby rails in battery-powered systems. In all of these, the TLE4270-2G replaces discrete series-pass designs with a single, protected IC. When designing with this part, place input and output ceramic capacitors as close to the IC pins as possible and observe the thermal resistance of the TO-263 tab. Designers should also consider the TLE4270-2D (TO-252) variant when a smaller footprint is acceptable, or TLE7270-2G when an enhanced ESD/EMC profile is needed. This page consolidates distributor stock data, parametric drop-in alternatives, and PCB design guidance not found in a quick datasheet scan, helping engineers select and qualify the TLE4270-2G faster.
TLE42702DATMA1 - 5V 650mA LDO Regulator, 42V Input | Infineon
The Infineon TLE42702DATMA1 is a 5 V low-dropout (LDO) fixed linear voltage regulator delivering up to 650 mA of continuous output current in a PG-TO252-5-11 (DPAK-5) surface-mount package. It accepts a wide input voltage range from 6 V up to 42 V (with transient survival to 65 V for 400 ms), and regulates the output to a fixed 5 V within a 2% accuracy band up to an input voltage of 26 V and full 650 mA load. The part is qualified to Infineon's automotive-grade reliability standards, making it well-suited to 12 V and 24 V vehicle electrical systems. A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally higher than the output - the 'dropout' being the minimum VIN-VOUT differential required for regulation. LDOs sit in the linear-regulator branch of the broader power-management IC family and are chosen over switching converters when low noise, fast transient response, and minimal external component count outweigh efficiency. The TLE42702 belongs to the classic automotive 5 V CAN/MCU supply family, where its wide VIN tolerance, short-circuit protection, and overtemperature shutdown are mandatory. Key features of the TLE42702DATMA1 include a typical dropout of 350 mV at full load, integrated short-circuit current limiting, thermal shutdown with hysteresis, and an enable input for power sequencing. Reverse-polarity protection on the input is built in, along with a reset/watchdog output on the 'G' suffix variant that is often co-designed with this part in microcontroller supply chains. Quiescent current is held low enough that the regulator remains suitable for always-on standby rails in body and chassis ECUs. Technically, the device uses a PNP pass-element architecture with a precision bandgap reference, yielding a stable 5 V rail across load, line, and temperature variations. The exposed tab of the DPAK-5 package provides a low thermal resistance path so that the IC can sustain the calculated worst-case dissipation without external heatsinking at moderate load currents. Robust ESD and load-dump robustness make this part attractive for harsh-environment industrial controls as well as automotive platforms. Typical applications include 5 V supply generation for automotive microcontrollers, body and chassis ECUs, CAN transceivers, and sensor clusters, as well as industrial PLC I/O, building automation, and any 12 V / 24 V bus system that needs a clean, protected 5 V rail. In each case the regulator's wide VIN range removes the need for a pre-regulation switching stage. When designing with the TLE42702DATMA1, ensure that VIN-VOUT x IOUT does not exceed the package's thermal envelope, and place the input capacitor close to the IC tab for stability. The reset output on the companion 'G' variant simplifies MCU supervision but is not present on the 'D' variant captured here. This page synthesizes Infineon datasheet data, distributor stock and pricing snapshots, drop-in alternatives from the same Infineon OPTIREG family, and practical design notes not assembled in any single manufacturer or distributor page.
TLE42712GATMA1 - 5V 550mA LDO Regulator | Infineon | Automotive
The Infineon TLE42712GATMA1 is a monolithic integrated low-dropout (LDO) fixed 5.0 V voltage regulator delivering up to 550 mA of output current in a PG-TO263-7-1 surface-mount package. The device accepts a wide input voltage range up to 42 V (with 65 V transient rating for 400 ms) and provides a regulated 5 V output with ±2% accuracy up to 26 V input. Its 350 mV typical dropout at full load makes it well suited for cold-crank and load-dump survival in 12 V automotive systems. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output differential is very small. LDOs are members of the linear regulator family, which in turn belongs to the voltage regulator category and the broader power management IC class of semiconductors. Unlike switching regulators, LDOs dissipate excess input voltage as heat, trading efficiency for ultra-low output noise and fast transient response. Key features include integrated over-temperature protection, over-current protection, reverse-polarity protection at the input, and an enable/reset function with adjustable delay. The PG-TO263-7-1 package (TO-263 with 7 leads plus tab) provides a low thermal resistance path, allowing sustained 550 mA output even at elevated ambient temperatures. The reset circuitry monitors the output and pulls the reset line low if VOUT drops below 4.65 V, supporting microcontroller supervision. The TLE42712GATMA1 uses a monolithic bipolar architecture with an integrated pass transistor, reference, and protection circuitry. Its wide input margin and built-in automotive-grade protection features allow direct connection to the 12 V vehicle bus without external preregulators or TVS arrays. The reset comparator provides a clean power-good signal for downstream microcontrollers and CAN transceivers. Typical applications include automotive body and chassis ECUs, infotainment head units, instrument clusters, and industrial 24 V PLC power rails. The 5 V fixed output and reset functionality make it especially attractive for microcontroller power domains that require a clean supply rail and power-good supervision. The device is also widely used as a post-regulator after a pre-regulated DC-DC converter to achieve low noise. When designing with this part, account for worst-case power dissipation at high line voltage and full load. At VIN = 16 V, VOUT = 5 V, and 550 mA load, the device dissipates approximately 6 W; the PG-TO263-7-1 tab should be soldered to at least 1 square inch of copper to keep the junction within safe limits. Place input and output ceramic capacitors close to the pins and follow the datasheet sequencing for the reset/adjust pin. This page synthesizes distributor pricing from DigiKey/Mouser, drop-in compatible same-brand and cross-brand alternatives in the same PG-TO263-7-1 footprint, and design notes that go beyond the Infineon datasheet alone.
TLE42744DV33ATMA1 - 3.3V 400mA LDO Regulator | Infineon OPTIREG
The Infineon TLE42744DV33ATMA1 is a monolithic integrated low-dropout (LDO) linear voltage regulator in a PG-TO252-3 (DPAK) surface-mount package, delivering a fixed 3.3 V output at up to 400 mA load current. Designed for the harsh environment of automotive applications, it accepts an input voltage up to 40 V and regulates VQ,nom = 3.3 V with ±2 % precision, while providing comprehensive protection against overload, short-circuit, and overtemperature conditions. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. Within the broader component taxonomy, LDOs belong to the linear regulator family, which sits under voltage regulators in the power management IC category. Unlike switching regulators, LDOs trade efficiency for simplicity and ultra-low noise, making them the preferred choice for post-regulation after a switching converter or for direct battery-to-rail conversion where EMI must be minimized. Key features of the TLE42744DV33ATMA1 include a low dropout voltage of approximately 250 mV at full 400 mA load, an operating junction temperature range up to 150 °C (Tj), and built-in reverse-polarity protection. The device also integrates reset and watchdog functionality in related family variants, but the V33 fixed-output variant shown here is optimized as a clean standalone 3.3 V rail for microcontroller and sensor supplies. The PG-TO252-3 (DPAK) package provides excellent thermal performance for a 3-pin part, with the tab acting as the main heat-dissipation path. Architecturally, the TLE42744DV33ATMA1 uses a bipolar pass-transistor topology with a precision bandgap reference and feedback network trimmed at wafer level to achieve ±2 % output accuracy. The control loop is designed for stable operation with small ceramic output capacitors, simplifying BOM and reducing PCB area. Input transient robustness up to 40 V (and load-dump tolerance per automotive standards) is achieved through integrated protection cells, removing the need for external TVS suppression in many 12 V board-net designs. Typical applications include automotive body and chassis electronics, 12 V permanent-power rails for ECUs, industrial 24 V bus systems, microcontroller power for sensors and actuators, and replacement of discrete zener-based regulators in power-supply modules. The wide input range and integrated protection make it well suited to any point-of-load where a clean, predictable 3.3 V rail is required. When designing with this part, choose the output capacitor per the manufacturer datasheet ESR window and place it as close as possible to the VQ pin and tab. Ensure the PCB copper area on the DPAK tab is sized to keep Tj below the maximum rated value at worst-case VIN, VOUT, and IOUT. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TLE42744DV50ATMA1 - 5V 400mA Automotive LDO Regulator | Infineon
The Infineon TLE42744DV50ATMA1 is a monolithic integrated low-dropout (LDO) linear voltage regulator with a fixed 5 V output, delivering up to 400 mA of load current, housed in a 3-pin PG-TO252-3 (DPAK) surface-mount package with thermal tab. The device operates over a wide 5.5 V to 40 V input range with a typical dropout voltage of 250 mV at full load, and is qualified to the AEC-Q100 standard for automotive harsh-environment applications. An LDO (Low-Dropout) linear regulator is a member of the linear regulator family inside the broader category of power management ICs (PMICs). Unlike switching regulators, an LDO uses a pass transistor in linear mode to drop excess input voltage, which produces an ultra-clean output at the cost of dissipating the input-to-output voltage difference as heat. This architecture makes LDOs the preferred choice when low noise, simplicity, and fast transient response matter more than conversion efficiency, especially in analog, sensor, and MCU supply rails. Key features of the TLE42744D V50 include 400 mA continuous output current, 250 mV typical dropout at rated load, integrated protection functions (overvoltage, overtemperature, reverse polarity, short-circuit), and automotive-grade qualification per AEC-Q100. The output tolerance is ±2% over the full operating range, and the device is optimized for cranking-during-start conditions typical of automotive 12 V powernet systems. The PG-TO252-3 (DPAK) package has a metal tab that doubles as the output pin and the primary thermal path, allowing the part to dissipate meaningful power when properly soldered to a sufficiently large copper pour. Technically, the regulator uses a PNP-Darlington-style pass element controlled by a bandgap-trimmed reference and an error amplifier. Current limiting, thermal shutdown, and a reverse-battery protection scheme are integrated, reducing external component count. The PG-TO252-3 (DPAK) footprint is one of the most widely adopted automotive LDO footprints and enables direct PCB-level interchangeability with several competing 400 mA 5 V LDOs. Typical applications include automotive body and chassis ECUs, sensor and actuator supplies, instrument-cluster microcontrollers, infotainment head units, and any 12 V/24 V industrial bus that requires a clean 5 V rail. The wide input range also covers load-dump transients above 40 V with appropriate external protection. When designing with this part, place the input capacitor close to the IC, ensure the DPAK tab has at least 1 cm^2 of copper, and verify worst-case dissipation during cold-crank (Vbat as low as ~5.5 V) where dropout can be marginal. This page synthesizes distributor pricing from nine sources, real-world drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
TLE42744EV50XUMA1 - 400mA, 40V, 5V Fixed LDO | Infineon
The Infineon TLE42744EV50XUMA1 is a monolithic integrated low-dropout (LDO) linear voltage regulator delivering up to 400 mA of output current at a fixed 5.0 V nominal output with ±2% accuracy, housed in a 14-pin PG-SSOP-14-2 surface-mount package with exposed pad. It accepts input voltages up to 40 V, making it suitable for harsh 12 V and 24 V automotive battery rails, and offers a typical dropout voltage of 250 mV at full load. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. Within the broader system hierarchy, LDOs belong to the linear regulator family, which is itself a subset of voltage regulators and power management ICs. Unlike switching converters, an LDO dissipates the VIN-VOUT differential as heat but introduces no switching noise, which is critical for noise-sensitive analog and sensor signal chains. Key features of the TLE42744EV50 include an input voltage range up to 40 V, fixed 5 V output with ±2% precision, integrated protection against overload, short-circuit, and overtemperature conditions, and a low quiescent current in normal operation. The device is designed to withstand the load-dump and jump-start transients typical of automotive electrical systems, with an operating junction temperature range of -40 °C to +150 °C. The TLE42744EV50 uses a monolithic bipolar architecture optimized for low quiescent current and high ripple rejection. The PG-SSOP-14-2 package with exposed thermal pad provides low thermal resistance to support continuous 400 mA output without external heatsinking at moderate VIN-VOUT headroom. Typical applications include automotive body and chassis ECUs, sensor and actuator power supplies, infotainment subsystems, and industrial 24 V bus regulators that require a robust, low-noise 5 V rail. Designers also deploy this part in standby supply rails for microcontrollers and CAN transceivers. When designing with this device, verify that worst-case VIN-VOUT differential times full load current stays below the package power-dissipation rating, and add input/output ceramic capacitors close to the IC per the datasheet typical application circuit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TLE42744GSV33HTMA1 - 3.3V 400mA Auto LDO | Infineon
The Infineon TLE42744GSV33HTMA1 is an automotive-qualified, low-dropout (LDO) linear voltage regulator that delivers a fixed 3.3 V output at up to 400 mA from a wide 4.7 V to 40 V input rail, housed in a 4-pin PG-SOT223 (TO-261) surface-mount package with an exposed thermal tab. An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage difference is very small. LDOs sit within the broader hierarchy of voltage regulators, which also includes switching regulators; within voltage regulation they form a distinct subcategory alongside DC-DC converters, supervisors, and battery management ICs. As a power management IC, the LDO's job is to convert a noisy or higher-voltage rail into a clean, low-noise rail for downstream analog, digital, or microcontroller circuitry without introducing switching noise. Key specifications include a typical 250 mV dropout at full 400 mA load, enabling efficient regulation even when the input rail sags close to 3.3 V. The device features an output voltage accuracy of ±2 % across the full -40 °C to +150 °C junction range, integrated short-circuit and thermal-shutdown protection, and very low quiescent current in normal operation. Its monolithic bipolar design provides excellent line and load transient response, suiting harsh automotive electrical environments. Typical applications include powering 3.3 V microcontrollers, CAN/LIN transceivers, sensor modules, and body-electronics ECUs in 12 V or 24 V vehicle systems. The wide 40 V input tolerance makes the part tolerant of load-dump transients commonly seen on automotive supplies, while the AEC-Q100 grade supports production under PPAP and IATF 16949 quality systems. Designers also use it in industrial 24 V bus systems requiring a clean local 3.3 V rail. When designing with the TLE42744GSV33HTMA1, ensure the input capacitor and output capacitor are placed as close to the device as possible to guarantee stability, and confirm that worst-case power dissipation (VIN - 3.3 V) × IOUT plus quiescent loss does not push the junction above the 150 °C limit. The exposed tab must be soldered to a sufficient copper pour for heat removal. This page synthesizes distributor pricing, drop-in compatible alternatives from the TLE42744 family and competitor pinouts, application circuits, and practical design notes that are not bundled together in the manufacturer datasheet, giving engineers a single source for sourcing, replacement, and layout guidance.
TLE42744GV50ATMA1 - 400mA 5V LDO Regulator | Infineon
The Infineon TLE42744GV50ATMA1 is a monolithic low-dropout linear voltage regulator that delivers up to 400 mA of output current at a fixed 5.0 V nominal output, housed in a PG-TO263-3-1 (TO-263-3 with tab) surface-mount package. It accepts input voltages up to 40 V and regulates to VQ,nom = 5 V with ±2% precision, making it well suited to 12 V and 24 V automotive and industrial supply rails. The device integrates protection against over current, over temperature, reverse polarity, and short circuit. An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the desired output, eliminating the switching noise of a buck converter at the cost of lower efficiency. LDOs sit within the broader hierarchy of linear regulators, which themselves belong to the power management IC family. They are the standard building block for post-regulation after switching pre-regulators and for direct regulation of low-current rails from battery or bus sources. Key features of the TLE42744GV50ATMA1 include 60 dB PSRR at 100 Hz for ripple rejection, a low quiescent current of 220 µA, a typical maximum supply current of 30 mA, and an output current capability of 400 mA. The PG-TO263-3-1 package uses the metal tab as a thermal pad and provides the low thermal resistance required for sustained 400 mA operation in a small PCB footprint. The AEC-Q100 automotive qualification and integrated protection features make it suitable for safety-relevant applications. Architecturally, the device uses a monolithic bipolar process with an integrated pass transistor, bandgap reference, and error amplifier, regulated to a fixed 5 V without external feedback components. This integration simplifies BOM, reduces PCB area, and improves reliability versus discrete regulator designs. The high 40 V input rating gives generous headroom on 12 V and 24 V buses with load-dump transients. Typical applications include automotive body and chassis ECUs, sensor and actuator supplies, industrial PLC I/O rails, and battery-powered systems that need a clean 5 V rail from a wide input range. It is commonly used as a post-regulator after a switching pre-converter to clean switching noise on analog or MCU supply pins. When designing with the TLE42744GV50ATMA1, place input and output capacitors close to the IC and observe the maximum power dissipation set by the TO-263 thermal pad. Always follow automotive load-dump and reverse-battery protection practices when using this part in 12 V or 24 V vehicles. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting engineers in component selection, second-sourcing, and PCB layout decisions.
TLE42754DATMA1 - 5V 450mA LDO Regulator | Infineon OPTIREG
The Infineon TLE42754DATMA1 is a monolithic integrated low-dropout (LDO) linear voltage regulator from Infineon's OPTIREG™ automotive product family, delivering a fixed 5.0 V output at up to 450 mA load current in a 5-pin TO-252-5 (DPAK) surface-mount package. The device accepts input voltages up to 42 V, tolerates load-dump transients typical of 12 V and 24 V automotive rails, and includes integrated short-circuit current limitation plus overtemperature shutdown for inherent protection. The output is trimmed to 5.0 V with ±2% accuracy, eliminating external feedback components, and a typical dropout of only 250 mV at full load preserves headroom during cranking pulses. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the desired output. LDOs occupy a specific position in the broader hierarchy: LDO → linear regulator → voltage regulator → power management IC → semiconductor. Compared to switching regulators, an LDO trades efficiency for simplicity: it has no inductor, generates no EMI, and provides extremely clean output with low ripple — properties that make it indispensable for always-on rails, sensor supplies, and post-regulation after a switching pre-regulator. Key specifications of the TLE42754D include a 5.5 V to 42 V input operating range, 450 mA continuous output current, 250 mV typical dropout at 450 mA, integrated reset output with adjustable delay, reverse-polarity and reverse-current protection on the input, and an operating junction temperature range of -40 °C to +150 °C. The reset (RO) signal asserts low when the regulated output drops below a programmed threshold, providing MCU supervision without an external supervisor IC. Architecturally, the TLE42754D uses a monolithic bipolar process with a PNP pass transistor to achieve the low dropout, paired with a precision bandgap reference and on-chip compensation. The AEC-Q100 qualification, wide input range, and integrated protections target harsh automotive environments, while the DPAK package's thermal pad allows direct PCB heat-sinking to copper pours. Typical applications include automotive body and chassis ECUs, instrument clusters, HVAC controllers, sensor and actuator supplies, and industrial 24 V bus systems. The 5 V fixed output is a near-universal supply rail for microcontrollers, CAN transceivers, and ASICs. When designing with this part, pay attention to power dissipation at high input voltages: at VIN = 24 V, VOUT = 5 V and 450 mA, the regulator dissipates roughly 8.6 W, requiring adequate copper heatsinking to keep the junction within its 150 °C limit. Decouple input and output with low-ESR ceramic capacitors placed close to the pins to ensure stability. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design guidance that is not available on a bare datasheet link — use it to evaluate sourcing options and PCB thermal strategies in one place.
TLE42764DVATMA1 - 400mA 40V Adjustable LDO Regulator | Infineon
The Infineon TLE42764DVATMA1 is a monolithic integrated low-dropout (LDO) voltage regulator for load currents up to 400 mA, housed in a PG-TO252-5 (DPAK-5) surface-mount package with exposed thermal tab. It accepts an input voltage up to 40 V and regulates it to an adjustable output between 2.5 V and 20 V (a fixed 5 V variant exists in the same family) with ±2% output accuracy, with a typical dropout of 250 mV at full load. Designed for the harsh environment of automotive applications, the device includes integrated protection against overload, short circuit, reverse polarity, and overtemperature conditions. An LDO (Low-Dropout) linear regulator is a class of linear voltage regulator whose pass element can operate with very small input-to-output voltage differentials, unlike older NPN-pass regulators that required 2 V or more of dropout. The LDO sits hierarchically under linear regulator -> voltage regulator -> power management IC -> semiconductor. LDOs are valued for their low noise, fast transient response, and circuit simplicity - they have no switching node, no inductor, and no EMI emissions, making them the preferred choice as point-of-load post-regulators following a switching pre-regulator. Key features of the TLE42764DVATMA1 include 4.5 V to 40 V input range, 2.5 V to 20 V adjustable output (or 5 V fixed), 400 mA continuous load current, low quiescent current, integrated overtemperature and short-circuit protection, and AEC-Q100 qualification for automotive use. The TO252-5 package offers a thermal tab that, when soldered to a copper pad, provides a low theta_JA thermal path essential for dissipating the linear regulator's continuous (VIN - VOUT) x IOUT power loss. Architecturally, the part uses a monolithic bipolar process with a PNP power pass transistor, on-chip bandgap reference, error amplifier, and protection block. The result is a single-rail linear regulator that can be dropped onto a PCB next to automotive microcontrollers, sensors, or CAN transceivers without an external heatsink at moderate loads. Typical applications include automotive body and chassis ECUs, sensor supply rails, infotainment subsystems, and industrial 24 V bus point-of-load regulation. The wide 40 V input tolerance also makes it ideal for trucks and commercial vehicles with 24 V battery systems subject to load-dump transients. Designers should plan for worst-case power dissipation. Estimated: at VIN=14 V, VOUT=5 V, IOUT=400 mA, dissipation is (14-5) x 0.4 = 3.6 W. With DPAK-5 copper-pour thermal resistance of roughly 35-45 C/W, junction temperature must be checked against the 150 C TJ(max). For lower VIN-VOUT deltas or where PCB copper area is constrained, derate IOUT accordingly. Connect the EN/Reset pin per datasheet for sequenced power-up. This page synthesizes distributor pricing, drop-in alternatives, comparison tables, and engineering design notes that go beyond what is printed on the Infineon datasheet cover page.
TLE42764GVATMA1 - 400mA, 40V Adjustable LDO | Infineon
The Infineon TLE42764GVATMA1 is a monolithic integrated low-dropout (LDO) linear regulator delivering up to 400 mA of load current, packaged in a 5-lead PG-TO263-5-1 (D²Pak) surface-mount module with an exposed thermal tab. It accepts input voltages up to 40 V and regulates to either a 5 V fixed output (TLE42764GV50 family) or an adjustable output ranging from 2.5 V to 20 V (TLE42764GV part), with ±2% output voltage precision across the full operating range. The device is qualified to AEC-Q100 for harsh automotive environments, with integrated protection against overload, short circuit, and overtemperature conditions. Internal current limiting and thermal shutdown ensure safe operation during fault events. An LDO (Low-Dropout) linear regulator is a member of the linear voltage regulator family that maintains a stable output voltage even when the input voltage approaches the output voltage, eliminating the need for a switching converter. Within the power management IC hierarchy, an LDO sits below switching DC-DC converters in efficiency but above simple Zener shunts in noise performance, making it the preferred post-regulator for noise-sensitive analog and digital loads. The TLE42764 family is purpose-built for automotive 12 V/24 V bus systems where cold-crank transients and load-dump surges demand robust input protection and wide operating range. Key features include a 500 mV typical dropout voltage at full load, low quiescent current draw for standby-tolerant designs, and an integrated reset/watchdog feature (with adjustable reset delay) for microprocessor supply supervision. The PG-TO263-5-1 D²Pak package offers an exposed metal tab that serves as a heatsink, supporting sustained high-current delivery without additional thermal hardware. Output stability is achieved with small ceramic capacitors, simplifying BOM and reducing PCB area. The reset output flag allows coordinated power-up sequencing for MCU-based subsystems. Architecturally, the TLE42764 uses a vertical PNP pass transistor topology with a precision bandgap reference, achieving tight load and line regulation without the switching noise of a buck regulator. The wide 40 V maximum input rating comfortably handles 24 V truck electrical systems and automotive load-dump pulses, while internal safeguards (overvoltage clamp, reverse-polarity protection at the input via external series resistor) make it suitable for under-hood and chassis-mounted modules. Typical applications include automotive body and chassis ECUs, powertrain sensor supply rails, HVAC control modules, instrument clusters, and industrial 24 V PLC power rails. The reset feature makes it especially valuable as a supervisor-grade supply for microcontrollers in safety-critical systems. For automotive lighting and infotainment subsystems, its low quiescent current supports start-stop micro-hybrid fuel-saving architectures. When designing with the TLE42764, ensure the input capacitor (1 µF minimum) and output capacitor (22 µF minimum, low-ESR ceramic or tantalum) are placed as close to the IC pins as possible. The exposed thermal tab must be soldered to a copper pour to achieve rated thermal performance. Select the feedback resistor divider values according to the manufacturer's reference design to maintain ±2% output accuracy. Avoid operating near the 40 V absolute maximum to preserve margin against transient surges.
TLE4276DVATMA2 - 400mA, 40V LDO Regulator | Infineon OPTIREG
The Infineon TLE4276DVATMA2 is a 400 mA low-dropout (LDO) linear voltage regulator from the OPTIREG linear family, housed in a PG-TO252-5-11 (DPAK, 5 leads with tab) surface-mount package. It accepts an input voltage up to 40 V and supplies a positive adjustable output, with internal fixed versions (5.0 V, 8.5 V, 10 V) available in the same family. The adjustable DV variant uses an external resistor divider and is qualified to AEC-Q100 for automotive environments. An LDO (low-dropout regulator) is a type of linear voltage regulator that maintains a stable output voltage even when the input-to-output voltage headroom is very small. LDOs belong to the broader class of voltage regulators, which sit within the power management IC (PMIC) hierarchy in a typical electronic system. Unlike switching converters, LDOs introduce no switching noise, trading efficiency for clean, ripple-free output - a critical advantage for analog, sensor and microcontroller supply rails. Key specifications include a 400 mA maximum output current, a typical quiescent current below 100 microamps in normal operation, and an inhibit (enable) input that drops current consumption to less than 10 microamps in standby. Built-in protection features include short-circuit current limit, reverse-polarity protection, thermal shutdown, and an integrated reset/watchdog circuit for microcontroller supply supervision. The wide 40 V input range supports direct connection to 12 V or 24 V automotive bus rails without pre-regulation. Architecturally, the TLE4276DV combines a bandgap reference, an error amplifier, an N-channel MOSFET pass element and a thermal-regulation loop, all trimmed at wafer level to deliver a tight 4% output accuracy across line, load and temperature. The exposed tab provides a low thermal resistance path, enabling sustained 400 mA output at elevated ambient temperatures with a properly sized copper land. Typical applications include automotive body and chassis ECUs, sensor and actuator supplies, industrial 24 V bus regulators, and any 12 V/24 V system that needs a clean, well-protected auxiliary rail. The AEC-Q100 qualification also makes it suitable for under-hood and battery-management subsystems. When designing with this part, always connect the exposed tab to a sufficient copper pour to keep the junction within the SOA. Place input/output ceramic capacitors as close as possible to the device to suppress input transients on automotive load-dump events. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the Infineon datasheet, providing an engineer-ready reference for sourcing and second-sourcing decisions.
TLE42962GV33HTSA1 - 3.3V 30mA Automotive LDO | Infineon
The Infineon TLE42962GV33HTSA1 is a monolithic low-dropout linear voltage regulator in the very small SMD package PG-SCT595, delivering a fixed 3.3 V output at up to 30 mA load current. It accepts a wide 4 V to 45 V input range, exhibits a typical 250 mV dropout, and is qualified to AEC-Q100 for automotive applications. The device is housed in a 5-lead surface-mount package and ships on tape and reel. An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage within a few hundred millivolts. As a member of the linear regulator family and the broader power management IC category, an LDO trades efficiency for exceptionally low output noise - it dissipates (VIN - VOUT) * IOUT as heat rather than switching, so it adds zero switching ripple to sensitive analog rails. This makes the TLE42962 family a natural fit for always-on microcontroller rails in noisy automotive environments. Key differentiating features of the TLE42962GV33 include reverse-polarity and load-dump robustness up to 45 V, integrated short-circuit protection with thermal shutdown, and a quiescent current in the microampere range suitable for permanent-battery (KL30/KL15) connections. The 250 mV typical dropout at 30 mA allows tight headroom design, while the AEC-Q100 Grade-1 qualification and -40 C to +150 C junction temperature rating target under-hood and chassis electronics. The fixed 3.3 V output eliminates external feedback resistors, simplifying BOM cost and PCB area. Internally the part uses a PNP pass element driven by a precision bandgap reference and includes an enable input (INH) for low-Iq standby control. Output accuracy is held within +/-3 % across load, line and temperature, and the device is stable with low-ESR ceramic output capacitors down to 1 uF. Typical quiescent current in standby is below 40 uA, keeping KL30 quiescent drain minimal. Typical applications include automotive body controllers, instrument cluster MCUs, sensor supply rails, HVAC control modules, and CAN/LIN transceiver standby power. The wide input tolerance and load-dump immunity also make the part suitable for industrial 24 V bus systems and any 12 V/24 V automotive rail that must survive transient events per ISO 7637. When designing with this part, ensure the input capacitor is placed within a few millimeters of the IN pin to absorb load-dump transients, and verify that PCB copper area under the exposed thermal lead keeps junction temperature within the -40 C to +150 C window. Always check the latest Infineon datasheet for the latest characterization curves and EMC recommendations.
TLE42962GV50HTSA1 - 5V 30mA LDO Regulator SCT595-5 | Infineon
The Infineon TLE42962GV50HTSA1 is a monolithic integrated low-dropout linear voltage regulator in the PG-SCT595-5 SMD package, delivering a fixed 5.0 V output at up to 30 mA. Designed for the severe conditions of automotive applications, the device operates from input voltages up to 45 V and features a typical dropout of 250 mV, making it well-suited for cranking-load transients on 12 V automotive rails. A linear voltage regulator (also called an LDO when the dropout voltage is small) is a power management integrated circuit that maintains a constant output voltage regardless of input voltage fluctuations and load changes. LDOs sit hierarchically under voltage regulators, which are themselves a category of power management ICs. The TLE4296-2G family specifically addresses the low-current rails required by microcontrollers and sensors in automotive electronic control units, complementing switching DC-DC converters that handle higher-power rails. Key features include ±4% output voltage accuracy over the full operating range, integrated overtemperature protection, output current limitation, and reverse-polarity protection. The wide input voltage range of 5.5 V to 45 V allows direct connection to the vehicle battery without additional pre-regulation, and the device is qualified to AEC-Q100 standards for automotive reliability. The TLE42962GV50HTSA1 uses a monolithic bipolar architecture with an on-chip pass transistor and bandgap reference, providing stable regulation across -40 °C to +150 °C junction temperatures. The low quiescent current and integrated protective features make it particularly robust in electrically noisy automotive environments where load-dump and jump-start events are common. Typical applications include always-on microcontroller power supplies in body and chassis ECUs, sensor power rails, and standby power for infotainment controllers. The compact SCT595-5 package occupies minimal PCB area, enabling dense module designs. When designing with this regulator, place input and output capacitors close to the IC pins and ensure the dissipation does not exceed package thermal limits at maximum input voltage and load. For higher output current requirements beyond 30 mA, consider the higher-current members of the TLE4296 family or a switching regulator topology. This page synthesizes distributor pricing, drop-in same-package alternatives, AEC-Q100 compliance notes, and practical design guidance that go beyond the information available in the standalone Infineon datasheet.
TLE4471GAUMA1 - Triple 450mA LDO Regulator | Infineon
The Infineon TLE4471GAUMA1 is a monolithic very-low-drop triple voltage regulator IC housed in a 20-pin PG-DSO-20-12 power package, designed primarily for automotive and industrial multi-rail power systems. The main output delivers up to 450 mA, with two tracked auxiliary outputs providing up to 50 mA and 100 mA respectively, and supports positive adjustable or fixed output voltages. It is qualified to AEC-Q100 standards, making it suitable for under-the-hood automotive electronics such as ECU supply rails, body modules, and infotainment processors. What is an LDO (Low-Dropout) linear regulator? It is a type of voltage regulator that maintains a stable output voltage even when the input supply is very close to the output voltage, achieving this through a pass transistor operating in the linear region. LDOs belong to the broader hierarchy of linear regulators, then voltage regulators, then power management ICs (PMICs), and ultimately the semiconductor device family. The "very-low-drop" designation of the TLE4471G indicates sub-1V dropout, allowing cold-crank survival on 12V automotive rails. Key features of the TLE4471GAUMA1 include integrated reset generation with adjustable delay, a watchdog timer, an enable input for power sequencing, and very low quiescent current in standby for battery-sensitive applications. The device provides comprehensive protection: thermal shutdown, overcurrent limiting on all three outputs, short-circuit protection, and reverse-polarity robustness. Its PG-DSO-20 power package offers an exposed thermal pad enabling efficient heat dissipation from the 450 mA main LDO. Technically, the TLE4471G uses a PNP-DMOS pass topology on the main rail for low dropout, with tracking NPN-based regulators on the auxiliary rails. The main output reference accuracy is typically within 2 percent, with tracking outputs maintaining close matching to the master rail. Communication with the host MCU is supported through the reset and watchdog pins, enabling ISO 26262-style functional safety architectures where the regulator supervises the microcontroller supply. Typical applications span automotive ECUs, body control modules, instrument clusters, gateway modules, and industrial PLC power supplies where multi-rail tracking, supervisor functions, and AEC-Q100 reliability are mandatory. The wide input voltage range accommodates 12V automotive bus systems including load-dump transients up to 42 V. When designing with this part, ensure adequate copper area beneath the exposed pad to keep junction temperature below 150 °C, and place the input/output ceramic capacitors as close as possible to the relevant pins. The reset delay and watchdog timing are programmable via external resistor-capacitor networks, which should be chosen based on the host MCU startup time and oscillator stability requirements. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not consolidated in the manufacturer datasheet alone, supporting faster BOM selection and second-source qualification.
TLE4476D - 350mA/430mA Dual LDO Regulator | Infineon
The Infineon TLE4476D is a monolithic dual low-dropout voltage regulator designed to supply microprocessor systems under harsh automotive conditions, providing two fixed outputs: a 3.3V rail at up to 350 mA and a 5V rail at up to 430 mA, all housed in a PG-TO252-5 (DPAK) surface-mount package. The 5V output can be switched on and off via the dedicated EN (enable) pin, enabling power sequencing in ECU and microcontroller subsystems where one rail must come up before another. Input voltage operation extends up to 42 V, allowing direct connection to 12 V and 24 V automotive buses with substantial transient headroom. A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output using a pass transistor operating in the linear region, even when the input-to-output differential is small (typically well under 1 V). LDOs are a subset of linear regulators within the broader voltage regulator family, which itself belongs to power management ICs. Compared with switching regulators, LDOs provide ultra-clean, low-noise output at the cost of efficiency equal to VOUT/VIN, so their best-fit roles are post-switcher filtering rails and lower-current analog/memory supplies where noise floor is the dominant constraint. Key features of the TLE4476D include ±4% output voltage accuracy on both outputs, integrated protection against overload, short-circuit and overtemperature conditions, low quiescent current in the OFF state for battery-drained parked-vehicle scenarios, and the wide 42 V maximum input rating that absorbs load-dump transients on 12 V automotive rails. The reset/watchdog and early-warning functions in the Infineon OPTIREG family of parts provide an additional layer of MCU supervision that complements the regulator's basic protection suite. Internally, the TLE4476D uses bipolar pass transistors with a precision bandgap reference. Each output stage is followed by separate compensation and current-limit loops, with thermal shutdown and reverse-polarity protection that allow the regulator to recover gracefully from wiring faults common in automotive harnesses. The PG-TO252-5 (DPAK) package provides a thermal resistance suited to multi-hundred-mA dissipation with a reasonable PCB copper area beneath the exposed tab. Typical applications include automotive body and powertrain ECUs, where 3.3V powers the MCU core and 5V powers sensors and CAN transceivers; industrial PLCs requiring dual-rail supply from a 24 V bus; and battery-backed microcontroller modules in which the 5V rail can be shut down by the EN pin during deep-sleep to extend standby time. The 42 V input range also makes the part attractive for HVAC, lighting controllers and any system that must survive automotive transients. When designing with the TLE4476D, derate the input-to-output differential carefully - at 12 V in and 5 V out at 430 mA the part dissipates roughly 3 W, demanding an exposed-pad copper pour of at least 1 square inch for reliable thermal performance. Place input and output ceramic capacitors close to the IC pins and respect the EN logic thresholds in the datasheet to guarantee clean power-up sequencing across operating-temperature corners. This page synthesizes distributor inventory, drop-in alternatives and practical layout notes that complement the Infineon datasheet v02.60.