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TLD5190QVXUMA1 - 55V H-Bridge DC-DC LED Controller | Infineon
The Infineon TLD5190QVXUMA1 is a synchronous MOSFET H-Bridge DC-DC controller from the LITIX Power family, delivering up to 96% efficiency for high-power LED loads and housed in a 48-pin VQFN exposed-pad (PG-VQFN-48-31) package. Key headline specifications include an input voltage range of 4.5 V to 40 V, an output voltage range of 2 V to 55 V (boost configuration), and an analog/PWM dimming interface. AEC-Q100 qualified, this controller targets automotive front-light, daytime running light (DRL), and high-beam LED drivers. An LED driver controller is a power-management IC that regulates current through high-brightness LEDs by converting a variable battery or bus voltage into a precisely controlled output. The TLD5190QVXUMA1 is a controller (not a fully integrated switch) and therefore requires external MOSFETs in an H-bridge topology. The H-bridge architecture enables seamless buck-boost operation, which is critical in automotive applications where the battery voltage can rise to 40 V on load-dump events yet the LED forward voltage may sit below, at, or above the input rail depending on current and temperature. Key differentiating features include a programmable switching frequency of 200 kHz to 700 kHz, spread-spectrum frequency modulation (SSFM) for EMI reduction, integrated protection (open-LED, short-to-Ground, short-to-Battery, overtemperature), and an analog + PWM dimming interface for brightness control. The device supports both analog (0-100% via external voltage) and digital PWM dimming with high contrast ratios, making it suitable for matrix-LED and adaptive driving beam (ADB) applications. The TLD5190QVXUMA1 uses a peak-current-mode control architecture with built-in slope compensation and a synchronous rectification gate driver for both high-side and low-side MOSFETs. The H-bridge topology allows the controller to operate as a step-down (buck), step-up (boost), or buck-boost converter without mode-change transients, ensuring smooth LED current during VIN transients such as cranking pulses. Typical applications include automotive LED headlamps (low beam, high beam, DRL), fog lights, rear combination lamps, signal lighting, and general high-brightness LED drivers where efficiency above 90% is mandatory for thermal management. The wide 4.5V to 40V input range with load-dump tolerance makes it ideal for 12V and 24V automotive electrical systems. When designing with this controller, pay close attention to the gate-drive layout, MOSFET selection for the chosen switching frequency, and inductor/ capacitor sizing for the target current ripple. The exposed thermal pad of the VQFN-48 must be soldered to a sufficient copper pour to meet the thermal resistance specified in the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternatives sourced from cross-reference databases, and practical design notes not consolidated on the manufacturer product page, giving engineers a faster path from MPN to BOM.
TLD5191ESXUMA1 - 55V H-Bridge LED DC-DC Controller | Infineon
The Infineon TLD5191ESXUMA1 is a 4.5V to 55V LITIX Power MOSFET H-Bridge DC-DC controller for high-power LEDs, switching between 200 kHz and 700 kHz with analog and PWM dimming support. The IC integrates one DC-DC controller output stage capable of step-down (Buck) and step-up (Boost) topologies, supplied in a 24-pin PG-TSDSO exposed-pad package on tape-and-reel. The XUMA1 suffix designates the reel-packaged, automotive-qualified ordering code built around the same TLD5191ES silicon. A LITIX Power LED driver is a high-side or H-bridge controller that regulates current through high-brightness LEDs by modulating an external MOSFET stage. Such controllers belong to the broader family of switched-mode LED drivers that sit hierarchically between DC-DC converters and lighting power management ICs. They translate an intermediate bus voltage into a tightly regulated LED string current with high efficiency, replacing linear regulators where thermal dissipation or input voltage headroom would otherwise be unacceptable. The TLD5191ESXUMA1 features an integrated H-Bridge topology that supports both buck and boost operation from a single device, enabling LED string voltages above or below the input rail. Programmable switching frequency from 200 kHz to 700 kHz lets designers balance efficiency against EMI and inductor size. Built-in protection includes open-LED detection, shorted-LED detection, output overvoltage, and thermal shutdown. Analog dimming is achieved through an external reference, while PWM dimming is supported with very low duty cycles for high-contrast applications such as matrix headlamps. The architecture combines a current-mode controller with an H-bridge gate driver block, allowing seamless transitions between buck and boost without external logic. Internal timing and blanking circuits are designed to prevent false triggering during MOSFET switching transitions. The exposed thermal pad on the PG-TSDSO-24 package reduces junction-to-ambient thermal resistance, supporting sustained high-current LED operation. Typical applications include automotive matrix LED headlamps, daytime running lights, and high-power LED signalling modules. The wide 4.5V to 55V input range suits both 12V automotive buses and 24V commercial vehicle systems, with load-dump transient tolerance required by automotive electrical standards. When designing with this device, ensure that the external MOSFETs are rated for the worst-case string voltage, and that the bootstrap capacitor is sized to support the high-side gate drive across all duty cycles. Following the Infineon TLD5191ES reference design minimizes layout-related EMI and protects the dimming accuracy. This page synthesizes distributor pricing, automotive-grade drop-in alternatives within the LITIX family, and practical PCB layout notes that complement the manufacturer datasheet for engineers designing automotive LED drivers.
TLD55411QUXUMA1 - 55V Buck-Boost LED Controller | Infineon
The Infineon TLD55411QUXUMA1 is a synchronous MOSFET H-bridge single-inductor DC-DC controller engineered for high-power BUCK-BOOST LED control with both constant-current and constant-voltage regulation. It integrates a single-output DC-DC controller that supports Step-Down (Buck), Step-Up (Boost), and Buck-Boost topologies with analog and PWM dimming, housed in a 48-pin PG-TQFP-48-9 exposed-pad package from the LITIX family. A BUCK-BOOST LED driver controller is a switching topology that maintains a stable output current through an LED string regardless of whether the input voltage is above or below the LED string forward voltage. It belongs to the wider category of switch-mode power supply controllers (SMPS controllers), specifically the LED driver sub-category, sitting under power management ICs in the LITIX Power LED Driver family. The wide VIN range covers 4.5V to 40V on the IC supply input and 4.5V to 55V on the power stage, allowing direct operation from 12V and 24V automotive rails as well as 48V nominal industrial bus voltages. The wide LED forward voltage range spans 2V up to 55V, supporting LED strings from a few high-brightness LEDs up to long strings of mid-power LEDs. A 1-channel output drives a single LED string with high-side current sense. Internally, the device uses a synchronous MOSFET H-bridge topology on the power stage combined with a single external inductor, eliminating the need for a second magnetic component. The controller regulates either constant current (CC) or constant voltage (CV) depending on load conditions and is suitable for automotive front-light, daytime running light, and high-power general-illumination LED drivers. Diagnostic features and protection include LED open/short detection, over-temperature shutdown, and input undervoltage lockout. Typical applications include automotive LED headlamp drivers, DRL (daytime running light) drivers, fog-lamp drivers, industrial high-bay LED fixtures, and architectural LED lighting where the input voltage may swing above and below the LED forward voltage during load-dump transients or cold-crank events. When designing with the TLD55411QUXUMA1, ensure the input bulk capacitance is sized for the worst-case load-dump transient (up to 55V at the power stage) and that the high-side current-sense resistor is Kelvin-connected to minimize ground-loop errors. The exposed thermal pad must be soldered to a sufficient copper pour to handle the gate-drive and quiescent losses of the controller. This page synthesizes distributor pricing, drop-in alternative coverage, application notes, and design pitfalls not consolidated in the manufacturer datasheet, helping engineers evaluate the TLD55411QUXUMA1 for new designs and as a replacement for legacy LED controllers.
TLD60992ESXUMA1 - Dual 58V Multi-Topology LED Driver | Infineon
The Infineon TLD60992ESXUMA1 is a dual-channel multi-topology DC-DC controller from the LITIX family, designed as an LED driver IC with two outputs that support Flyback, SEPIC, Step-Down (Buck), and Step-Up (Boost) topologies in a single device. It operates from a 4.5V to 58V input voltage range with output capability up to 70V, and integrates a 2.2MHz switching oscillator that enables small external magnetics. The device is housed in a 24-pin PG-TSDSO-24-5 exposed-pad package, providing both thermal performance and a compact automotive footprint. What is a multi-topology LED driver? A multi-topology LED controller is a switching regulator IC that the designer can configure as a boost, buck, buck-boost (SEPIC), or flyback converter by changing the external component arrangement, while keeping the controller IC itself fixed. Within the broader taxonomy, it sits under switching controllers -> DC-DC controllers -> LED drivers -> power management ICs -> semiconductors, and belongs to Infineon's LITIX automotive lighting family. Key features include analog and PWM dimming inputs per channel, integrated MOSFET gate drivers, and built-in protection features (over-voltage, over-current, open-LED, and thermal shutdown). The dual-output architecture supports two independent LED strings with individual dimming control, while the high switching frequency of 2.2MHz allows miniature inductors and reduced PCB area. The wide 4.5V-58V input accommodates both 12V and 24V automotive bus rails, including load-dump transients. Technically, the device uses a peak-current-mode control architecture with slope compensation, providing cycle-by-cycle current limiting and good transient response. The exposed pad (PG-TSDSO-24-5) package offers a low thermal resistance path for the internal gate drivers, which is essential when driving external MOSFETs at high frequency and high input voltage. Typical applications include automotive front-light LED drivers (headlamp low/high beam, daytime running light), rear-light LED drivers (tail, brake, indicator), architectural and industrial lighting, and any multi-string LED system requiring independent dimming or fault handling. When designing with the TLD60992ESXUMA1, choose the topology (boost, buck, SEPIC, flyback) based on LED string voltage relative to battery bus, and ensure the input decoupling handles automotive load-dump up to the device's 58V rating. This page synthesizes distributor pricing from DigiKey, Mouser, LCSC, Arrow, and Newark alongside parametric alternatives and design notes not found in the manufacturer datasheet alone.
TLD700216ESXUMA1 - 16-CH 76.5mA LED Driver | Infineon LITIX
The Infineon TLD700216ESXUMA1 is a 16-channel linear LED driver from the LITIX Pixel Rear family, delivering up to 76.5 mA per channel with 14-bit PWM dimming resolution, housed in a PG-TSDSO-24-5 exposed-pad TSSOP-24 package. A linear LED driver is an integrated circuit that regulates current through each LED string directly from the system supply using an internal low-side or high-side pass transistor. Compared with switched-mode LED drivers, linear drivers avoid switching noise and EMI, which simplifies EMC compliance at the cost of higher conduction loss when VIN substantially exceeds the LED forward voltage. The TLD7002-16ES belongs to the broader LED driver category inside the power management IC family, specifically targeting pixel-controlled rear-light applications in automotive lighting. Key specifications include 16 independent constant-current outputs, 76.5 mA maximum per channel, 14-bit PWM dimming (16,384 steps), an analog dimming input for current setting, an operating supply range of 6 V to 20 V, and a load-dump tolerance up to 40 V. Integrated diagnostics include open-load, short-to-ground, and short-to-supply detection on every channel, plus an integrated thermal sensor and overtemperature shutdown. Communication is via SPI with a daisy-chain option for multi-device addressing across large pixel arrays. Architecturally, the device uses an internal bandgap reference and per-channel current mirrors with low-side regulation, paired with a state machine for sequenced diagnostics and PWM generation. The 14-bit PWM timer is generated on-chip from an internal oscillator, eliminating the need for an external clock for dimming. Functional-safety features include ISO 26262 ASIL-B capability, allowing deployment in rear lamps where ASIL classification is required. Typical applications include automotive dynamic rear lamps, sequential turn indicators, animated tail-light signatures, and pixel-controlled interior ambient lighting. Its small PG-TSDSO-24-5 footprint and SPI control suit it to distributed pixel-driver nodes connected to a central body or lighting ECU. When designing with the TLD7002-16ES, ensure the supply is reverse-polarity protected and that the EP thermal pad receives a continuous copper pour sized to keep junction temperature within the -40 C to +125 C operating range. Use the SPI daisy-chain mode to expand channels without increasing microcontroller GPIO count. This page synthesizes Infineon LITIX family datasheet specifications, current distributor pricing as of 2026-09-14, and practical design notes not consolidated in the manufacturer datasheet.
TLE42062GXUMA2 - 1.4A H-Bridge Motor Driver 8-18V | Infineon
The Infineon TLE42062GXUMA2 is a fully integrated bipolar H-bridge DC motor driver delivering up to 1.4 A continuous output current, housed in a 14-pin PG-DSO-14 surface-mount package. Designed for automotive and industrial motion control, it operates from a single 8 V to 18 V supply and integrates the four power DMOS half-bridge transistors, charge pump, control logic, and protection circuitry on a single die. Key features include a parallel (TTL-compatible) logic interface, integrated free-wheeling diodes, PWM capability up to 25 kHz, low quiescent current, and full protection against short-circuit, over-temperature, over-voltage, and under-voltage conditions. The H-bridge topology supports bidirectional drive of a single brushed DC motor or two solenoids with full four-quadrant operation (forward, reverse, brake, high-impedance). Technically, the device uses Infineon's SPT (Smart Power Technology) process to co-integrate vertical power DMOS transistors with bipolar control circuitry, achieving typical R_DS(on) around 700 mOhm at 25 C per leg. The integrated charge pump generates the gate drive for the high-side DMOS, eliminating the need for an external bootstrap capacitor and simplifying PCB layout. Typical applications include automotive throttle and flap actuators, HVAC blower and blend-door motors, headlight beam-leveling drives, body electronics such as mirror adjustment and seat-positioning motors, as well as industrial small DC-motor drives, valve actuators, and robotic actuators operating from a 12 V bus. When designing with the TLE42062GXUMA2, ensure adequate PCB copper pour on the exposed pad for thermal dissipation - at 1.4 A into a low-impedance motor, continuous dissipation can exceed 1 W. Add a 100 nF decoupling capacitor close to V_S and 10 uF bulk capacitance to absorb motor back-EMF transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TLE4241GMXUMA1 - 60mA Adjustable LED Driver, 45V | Infineon
The Infineon TLE4241GMXUMA1 is a 1-output linear LED driver IC with integrated adjustable constant-current source, 60 mA maximum output current, PWM dimming capability, and 45 V load-dump protection, housed in a PG-DSO-8 package. The device delivers an output current that is nearly independent of load and supply-voltage variations and is adjustable via three independent means (SET pin reference resistor, PWM input, and analog reference). An LED driver IC is a semiconductor device that regulates the current flowing through one or more LEDs to maintain constant luminance, protect the LED from supply transients, and enable brightness control. As a linear current source (a member of the LITIX Linear family), the TLE4241GMXUMA1 occupies a defined role in the power-management hierarchy: constant-current driver -> LED driver -> power management IC -> semiconductor. Compared with switching LED drivers, linear constant-current sources add no switching noise and require no inductors, which simplifies EMC compliance for automotive lighting. Key features include a wide 5.5 V to 45 V supply operating range, ±2% typical output-current accuracy, an integrated power stage with thermal shutdown, and open-load, short-circuit, and overtemperature protection. The PWM input supports direct microcontroller dimming, while the SET pin allows simple resistor-based current programming. The PG-DSO-8 surface-mount package provides a low thermal-resistance path suitable for continuous 60 mA operation. Typical applications include automotive interior and exterior lighting, dashboard illumination, signal lamps, and status indicators. The 45 V load-dump rating and AEC-Q100 qualification make the part especially well suited to 12 V and 24 V automotive electrical systems where voltage transients are common. When designing with this device, place the SET resistor close to the SET pin to minimize leakage paths and ensure adequate PCB copper area for thermal dissipation; thermal shutdown engages at approximately 150 °C junction temperature. Compared with discrete resistor-bias LED strings, the TLE4241GMXUMA1 maintains constant brightness across the full supply and temperature range, which simplifies optical calibration.
TLE4252DATMA1 - 250mA, 40V Tracking LDO Regulator | Infineon
The Infineon TLE4252DATMA1 is a monolithic integrated low-drop voltage tracking regulator delivering up to 250 mA output current in a PG-TO252-5-11 (DPAK-5) surface-mount package. It provides an adjustable output voltage from 1.5 V to 45 V referenced to the adjustable ADJ pin, supports a wide input range up to 40 V, and is AEC-Q100 qualified for automotive applications in the OPTIREG™ power management family. 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. LDOs are a subset of linear regulators, which in turn belong to the voltage regulator category within power management ICs. Tracking regulators such as the TLE4252D add a feedback loop that forces the output to follow an external reference voltage rather than an internal bandgap - this is critical for off-board sensor supplies and ECU rails where a remote reference must be reproduced accurately at the load. Key features include very low dropout voltage of typically 200 mV at 100 mA, very low quiescent current of typically 60 µA in normal operation, integrated output current limiting, reverse polarity protection at the input, and overtemperature shutdown. The device also includes an enable input for power sequencing and a status output that signals regulation faults to a host microcontroller. The TO-252-5 package with an exposed tab offers low thermal resistance for sustained 250 mA loads on a moderate copper area. The TLE4252D uses a PNP pass-element topology that combines low dropout with low quiescent current, achieving tracking accuracy within ±2 mV of the reference. This architecture makes the part especially well suited to supplying off-board sensors where the supply voltage must track an ECU reference without a level-shifting amplifier between them. Typical applications include automotive sensor supplies, ECU sub-rails, body and chassis controllers, and industrial 24 V sensor signal conditioning. The wide input range tolerates load-dump transients up to 40 V common in 12 V automotive electrical systems. When designing with this device, ensure that the input bulk capacitance is sized to suppress load-dump excursions and that the exposed tab is soldered to at least 1 cm² of copper to keep junction temperature within safe limits under sustained 250 mA load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet to accelerate BOM validation and second-source planning.
TLE42644GHTMA1 - 5V 100mA LDO Regulator | Infineon OPTIREG
The Infineon TLE42644GHTMA1 is a 5 V fixed-output, low-dropout (LDO) linear voltage regulator from the OPTIREG Linear family, delivering up to 100 mA of output current in a PG-SOT223-4 surface-mount package. It accepts a wide input voltage range of up to 45 V and regulates to a nominal 5 V output with ±2 % accuracy, optimized for automotive applications requiring very low standby current. According to the manufacturer datasheet, the part exhibits a typical quiescent current of 40 µA (reduced versus the legacy TLE4264G) and integrates comprehensive protection features including overtemperature shutdown, output current limitation, and short-circuit protection. The PG-SOT223-4 (3-pin + tab) package provides a low thermal resistance path through the exposed tab, enabling reliable operation across the -40 °C to +150 °C automotive junction temperature range. A linear voltage regulator (LDO) is a type of voltage regulator that maintains a stable DC output voltage even when the input voltage is very close to the output voltage, by dissipating the excess voltage as heat. LDOs sit within the broader power management IC hierarchy: voltage regulator -> linear regulator -> LDO -> automotive-qualified power management IC. They are preferred over switching regulators when noise-sensitive analog or digital rails must be powered without injecting switching ripple. In automotive body and chassis ECUs, an LDO is typically placed after a pre-regulator or directly on the battery rail to deliver a clean 5 V or 3.3 V supply to microcontrollers, sensors, and CAN transceivers. Key specifications include 100 mA continuous output current, 45 V maximum input voltage, 5 V fixed output (V_Q,nom = 5 V ±3 %), typical quiescent current of 40 µA, and integrated reverse-polarity protection. The PG-SOT223-4 footprint also supports wave-soldering and standard reflow profiles, with MSL Level 3 moisture sensitivity per JEDEC J-STD-020. The exposed tab functions as both a heat sink and an electrical ground reference for the regulator, simplifying PCB layout. Architecturally, the TLE42644G uses a bipolar pass transistor with a precision bandgap reference and error amplifier. The regulator's control loop maintains ±2 % load regulation across the full 100 mA output range, and the wide VIN range allows direct connection to 12 V or 24 V automotive battery rails without pre-regulation. Per the Infineon datasheet, the device is functionally compatible with the legacy TLE4264G but offers a 1-to-1 replacement path for the TLE4264-2G with reduced quiescent current. Typical applications include automotive body ECUs, instrument cluster power supplies, CAN/LIN transceiver rails, and always-on battery-connected modules such as keyless entry receivers and tire pressure monitoring sensors (TPMS). The low quiescent current makes the part especially suitable for permanent-battery applications where standby drain must be minimized. The wide input tolerance and integrated protection also support industrial 24 V sensor and actuator modules in factory automation. When designing with the TLE42644G, place input and output ceramic capacitors as close to the IC pins as possible, follow the manufacturer's recommended capacitor values (typically 100 nF at input and 1 µF to 10 µF at output), and route the exposed tab to a copper pour for thermal relief. Designers should also confirm that the worst-case input-to-output voltage differential at minimum VIN does not push the regulator into dropout under full 100 mA load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone datasheet.
TLE42644GHTSA3 - 5V 100mA LDO Regulator | Infineon OPTIREG
The Infineon TLE42644GHTSA3 is a monolithic integrated low-dropout (LDO) fixed voltage regulator that delivers 100 mA of output current at a fixed 5 V nominal output, housed in a PG-SOT223-4 (TO-261-4) surface-mount package. It accepts input voltages up to 45 V, regulates a 5 V output (±2% load accuracy, ±3% overall), and dissipates only 40 µA of quiescent current, making it a functional successor to the legacy TLE4264-2. 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 output voltage. In the broader system hierarchy, an LDO is a sub-category of linear regulator, which itself belongs to the family of voltage regulators and ultimately to power management ICs (PMICs). LDOs are preferred over switching regulators in noise-sensitive analog rails because they introduce no switching ripple, at the cost of lower efficiency at large input-to-output differentials. The TLE42644GHTSA3 features a 5 V fixed output, 100 mA continuous load capability, low quiescent current (40 µA), and integrated protection against reverse polarity, short circuit, overload, and overtemperature. Its PG-SOT223-4 package combines a small footprint with a thermal tab that allows the die to dissipate heat through the copper pad on the PCB. Internally, the device uses a bipolar process with a bandgap reference and a PNP pass element, achieving dropout performance suitable for automotive cranking transients. According to the Infineon datasheet, the regulator maintains regulation through input voltage dips down to 6 V while supplying a 100 mA load at 5 V out. Typical applications include automotive body and chassis ECUs, sensor and actuator supplies, infotainment standby rails, and industrial 24 V bus subsystems. It is qualified to AEC-Q100, making it suitable for under-hood and cabin modules where reliability over wide temperature ranges is required. When designing with this part, place a 100 nF ceramic bypass capacitor close to the input pin and a low-ESR 1 µF to 10 µF capacitor on the output to ensure clean transient response. The thermal tab must be soldered to a copper pour to keep the junction temperature within safe limits at full load.
TLE42662GHTMA2 - 5V 150mA LDO Regulator w/ INH | Infineon
The Infineon TLE42662GHTMA2 is a monolithic integrated low-drop fixed-voltage linear regulator that delivers up to 150 mA of output current at a fixed 5 V nominal output, housed in a 4-pin PG-SOT223-4 (SOT-223-4 / TO-261-4) surface-mount package. It accepts input voltages suitable for automotive 12 V bus systems and provides an inhibit (INH) pin for switching the regulator on and off, reducing quiescent current to less than 1 µA in OFF mode and approximately 40 µA in ON mode. A Low-Dropout (LDO) regulator is a type of linear voltage regulator that maintains a stable output voltage even when the input-to-output voltage difference is small. Within the broader semiconductor taxonomy, an LDO belongs to the family of linear regulators, which in turn are a subclass of voltage regulators, falling under the power management IC (PMIC) category. The TLE42662GHTMA2 is part of Infineon's OPTIREG™ linear family and is functionally compatible with the legacy TLE4266 device, but with substantially reduced quiescent current for always-on automotive applications. Key features include a fixed 5 V output with tight regulation accuracy, current limit protection, thermal shutdown, overtemperature protection, and reverse-polarity protection. The INH pin enables the regulator to be put into a low-quiescent standby state, which is essential for automotive modules that must remain connected to the battery without draining it during parking. The SOT-223-4 package provides sufficient copper area on its tab to dissipate heat at moderate load currents without external heatsinking. The device uses a monolithic bipolar architecture with an integrated pass element and bandgap reference. The architecture is optimized for very low quiescent current draw while still providing the transient response and PSRR required for microcontroller and sensor supply rails. Built-in protective features guard against load-dump transients common in automotive electrical systems. Typical applications include automotive microcontroller power supplies, body and chassis ECUs, sensor and actuator power rails, and always-on standby supplies for CAN/LIN transceivers. It is qualified for use in harsh automotive environments. When designing with this regulator, ensure that the input voltage remains within the safe operating range under load-dump conditions and that the SOT-223-4 tab is soldered to a sufficiently large copper pour to manage thermals at full 150 mA load. This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, plus drop-in SOT-223-4 alternatives and practical PCB layout notes not found in the manufacturer datasheet, giving procurement and design engineers a single source of truth for sourcing and replacement decisions.
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.