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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.
TLE4476DATMA1 - Dual 3.3V/5V 350/430mA LDO Regulator | Infineon
The Infineon TLE4476DATMA1 is a monolithic dual low-dropout (LDO) linear voltage regulator that delivers a fixed 3.3 V output at up to 350 mA (Q1) and a fixed 5.0 V output at up to 430 mA (Q2) from a single PG-TO252-5-11 (TO-252 / DPAK 4+Tab) surface-mount package. Both rails are derived from the same unregulated input supply, allowing a system designer to power a microcontroller and its peripheral or interface circuitry from one IC. The device belongs to Infineon's OPTIREG LINEAR family and is qualified for harsh automotive and industrial environments. A Low-Dropout (LDO) 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. In the broader power-management taxonomy, an LDO is a sub-class of linear regulators, which sit alongside voltage regulators and DC-DC converters as members of the power management integrated circuit (PMIC) family used in virtually every electronic system. The Q1 3.3 V rail is sized for microcontroller core and memory supplies, while the Q2 5.0 V rail is sized for CAN transceivers, sensors, and 5 V logic. The 5 V output can also be used to feed a second-stage LDO for sub-rails requiring tighter noise or accuracy. The device is designed to operate from a wide input range suitable for 12 V automotive battery systems and includes integrated protection features such as over-temperature shutdown and short-circuit current limiting on both outputs. From an architecture standpoint, the regulator combines a bandgap reference, two independent error amplifiers with pass transistors, and protective circuitry on a single die. The fixed output voltages eliminate external feedback resistor dividers, reducing component count and PCB area. The 5-pin PG-TO252-5-11 package provides a low thermal resistance path via the exposed tab, supporting sustained high-current operation on both rails simultaneously. Typical applications include automotive body and chassis ECUs, infotainment controllers, industrial PLCs, sensor interfaces, and any system that needs to derive both 3.3 V and 5 V from a single 12 V battery rail. The TLE4476DATMA1 is often paired with Infineon TLE42744 or TLE42764 LDOs for post-regulation. When designing in this part, ensure both rails' worst-case load currents are summed when sizing the PCB copper pour on the tab. Maintain a solid ground return and place input/output capacitors close to the package to keep dropout and ripple within spec. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical layout notes compiled from the Infineon datasheet and distributor inventory data not found in a single manufacturer document.
TLE4678ELXUMA2 - 5V 200mA LDO w/ Reset | Infineon OPTIREG
The Infineon TLE4678ELXUMA2 is a monolithic integrated low-dropout fixed-output voltage regulator delivering up to 200 mA continuous load current at a fixed 5 V output, housed in a thermally enhanced PG-SSOP-14-EP exposed-pad package. Input voltage range extends up to 45 V, output noise is optimized for automotive sensor and MCU rails, and the device integrates a reset/watchdog circuit for microcontroller supervision, along with current limiting and overtemperature protection. 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. LDO regulators sit in the broader hierarchy of voltage regulators under DC-DC and linear regulators, themselves a sub-class of power management ICs. They are valued for their low noise, simplicity, and absence of switching EMI, making them the preferred post-regulator for noise-sensitive analog, sensor, and microcontroller supply rails. Key specifications include the 5 V fixed output, 200 mA continuous load, 45 V maximum input, low quiescent current consumption in normal operation, and an integrated reset generator with adjustable threshold. The exposed-pad PG-SSOP-14-EP package keeps thermal resistance low so the regulator can sustain 200 mA at high VIN without entering thermal shutdown, while the SSOP body footprint remains compatible with hand and reflow soldering. The TLE4678ELXUMA2 uses a monolithic bipolar process integrating pass element, reference, reset comparator, and protection logic. The reset output asserts low when VOUT falls below the programmed threshold, providing a clean MCU brown-out signal. The watchdog can be serviced by the host controller to verify firmware health, an important safety feature for automotive ECUs. Typical applications include automotive body and chassis ECUs, sensor supplies, dashboard controllers, and industrial microcontroller rails requiring 5 V regulation from 12 V or 24 V bus. The reset/watchdog integration reduces BOM count versus a separate LDO plus supervisor. When designing with this part, place input and output ceramic capacitors close to the IC pins, observe the minimum output capacitance requirement specified by Infineon, and tie the exposed pad to a copper pour for heat extraction. The reset delay capacitor value sets the assertion pulse width and must be chosen per application timing. This page synthesizes distributor pricing, drop-in alternatives, and design notes specific to the TLE4678ELXUMA2 footprint, providing practical information not consolidated on the manufacturer datasheet.
TLE4678GMXUMA2 - 5V 200mA LDO w/ Reset | Infineon OPTIREG
The Infineon TLE4678GMXUMA2 is a monolithic integrated low-dropout fixed-voltage regulator that delivers up to 200 mA at a factory-set 5 V output from a 45 V-rated input rail, housed in a 14-pin PG-DSO-14 surface-mount package (also available as PG-SSOP-14 exposed-pad). The TLE4678GM variant combines a precision 5 V LDO with an integrated microprocessor reset generator and watchdog, plus comprehensive protection circuits such as current limit, overtemperature shutdown, and reverse-polarity robustness. Its 350 mV typical dropout at full load lets it ride through automotive cold-crank and load-dump events while still maintaining a regulated MCU rail. The IC belongs to Infineon's OPTIREG Linear family, designed for harsh 12 V/24 V automotive and industrial environments with operating temperatures up to 150 °C junction. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable, low-ripple output voltage even when the input voltage approaches the output voltage, by using a pass element (typically a PNP bipolar or PMOS transistor) operating in the linear region. Within the broader power-management hierarchy, LDOs sit beneath switching converters as a final-stage clean-up regulator — supplying noise-sensitive analog, microcontroller, and sensor loads directly from a higher, often noisy, intermediate bus. The TLE4678GM specifically targets automotive body, chassis, and powertrain ECUs where a single-chip 5 V rail plus supervisory functions reduces board area and BOM cost compared with a discrete LDO plus reset/watchdog IC. Key features include ±2 % output voltage accuracy, integrated power-on reset with adjustable delay, window watchdog, current-limit foldback, thermal shutdown, and an enable input. The reset and watchdog thresholds are factory-trimmed for 5 V systems, simplifying firmware bring-up. The wide input range up to 45 V also tolerates 24 V industrial transients and clamped load-dump pulses typical of automotive electrical systems. Technically, the TLE4678GM uses a vertical PNP pass transistor architecture with a bandgap reference, achieving low quiescent current (typically under 5 mA at light load) and excellent line/load transient response. The exposed-pad (PG-SSOP-14) version lowers thermal resistance for continuous high-current operation; the PG-DSO-14 GM version is pin-compatible with the older TLE4278 for easy migration. Typical applications include automotive body control modules, instrument clusters, HVAC controllers, and industrial PLCs requiring a regulated 5 V rail with microprocessor supervision. The reset and watchdog outputs free designers from adding an external supervisor IC. When designing with this device, place the input bulk capacitor close to VIN, use a low-ESR 1 µF minimum on VOUT, and ensure PCB copper area under the exposed pad is sufficient to keep junction temperature below 150 °C at maximum dissipation. Watchdog timing capacitor selection must follow the datasheet's RC table to avoid spurious resets. This page synthesizes distributor pricing, drop-in alternatives, application notes, and practical PCB design guidance not found in the bare manufacturer datasheet.
TLE6289GP - 6-Channel Peak-and-Hold Switch | Infineon
The Infineon Technologies TLE6289GP is a smart 6-channel peak-and-hold switch integrated circuit for automotive power-management and load-driving systems. The verified distributor listings identify the device as a gate-driver IC and a 6-channel peak-and-hold switch, while the available search data does not expose a complete manufacturer datasheet. Exact electrical ratings, channel logic, timing, and automotive qualification therefore require confirmation in the manufacturer datasheet before a new design is released. The GP order code denotes Infineon's automotive-oriented package family, but its exact package dimensions, pin count, and terminal assignments must also be verified against the official document. A TLE6289GP is useful where several controlled outputs must share common protection, diagnosis, or peak-and-hold behavior. Six integrated channels can reduce discrete component count and board area compared with separate switched loads, although the common-device architecture also concentrates failure and thermal-management considerations. Engineers should compare the TLE6289GP with the specific load, short-circuit, surge, and diagnostic requirements of the target vehicle platform. The verified market listings support gate-driver and power-management categorization, but they do not establish whether every output has a dedicated diagnostic path, how the channels behave during overload, or whether the device supports cascading or individual shutdown. Those details directly affect suitability in pump, motor, solenoid, relay, and electronic-valve systems. The TLE6289GP is best treated as an automotive smart-switch candidate rather than a generic MOSFET driver. Its in-circuit value depends on matching the integrated protections to the load, validating the supply and pin definitions, and checking thermal performance at the maximum simultaneous switching duty cycle. This page distinguishes verified market facts from unverified technical assumptions and identifies the parameters that still require manufacturer-source confirmation.
TLE7181EMXUMA1 - 4-Ch Half-Bridge MOSFET Gate Driver | Infineon
The Infineon TLE7181EMXUMA1 is a 4-channel half-bridge gate driver IC dedicated to driving 4 N-channel power MOSFETs forming the converter stage of high-current DC motor drives in the automotive sector. Housed in a 24-pin PG-SSOP-24-4 (exposed-pad SSOP) package with non-inverting logic, it operates from a 5.5V to 28V supply range, supports up to 1.5A peak source/sink gate drive current, and provides an SPI/digital diagnostic interface with comprehensive fault feedback. The device is AEC-Q100 qualified, making it suitable for safety-relevant automotive applications such as electric power steering (EPS), electric water pumps, engine cooling fans, and brake-by-wire actuators. A gate driver IC is a power-management semiconductor that sits between a low-power microcontroller or logic controller and the high-current gate of a power MOSFET or IGBT. Its primary function is to level-shift logic-level PWM signals to the higher voltages required to fully enhance the power MOSFET, provide high peak current to rapidly charge and discharge the gate capacitance for fast switching, and protect the controller from the high-voltage switching transients present on the half-bridge. In the broader taxonomy, gate drivers belong to the power management family, sit alongside low-side drivers, high-side drivers, and isolated gate drivers, and serve as critical building blocks in motor-control, DC-DC, and inverter subsystems. Key features of the TLE7181EMXUMA1 include four independent half-bridge outputs capable of configuring as two full H-bridges, integrated charge pump for 100% duty-cycle high-side drive, programmable dead-time generation, short-circuit and over-current detection via dedicated current-sense comparator, under-voltage lockout (UVLO) on both VCC and VBS rails, overtemperature shutdown, and a serial peripheral interface (SPI) for fault read-back and configuration. The exposed thermal pad (PG-SSOP-24-4) provides a thermal resistance of approximately 31 C/W, allowing continuous operation at moderate switching frequencies in sealed automotive environments. Typical applications include brushed DC motor control in EPS systems, brushless DC (BLDC) motor pre-drivers, electric coolant and oil pumps, HVAC blower fans, transmission solenoids, and general-purpose automotive H-bridge inverters up to several hundred watts. A PWM/DIR interface allows direct connection to a microcontroller's timer peripherals for closed-loop current or speed control. The device's 12V support and integrated protection features reduce external component count, simplifying the design of ISO 26262-compliant motor drive subsystems. When designing with the TLE7181EMXUMA1, attention must be paid to PCB layout around the bootstrap capacitors, gate-drive loop minimization, and thermal management of the exposed pad. Designers should follow Infineon's reference design and application notes to achieve robust short-circuit detection and reliable operation across the automotive -40C to +150C temperature range.
TLE7189F - 3-Phase Bridge Driver IC | Infineon Technologies
The Infineon TLE7189F is a 3-phase motor driver IC that controls 6 to 12 external MOSFETs forming the converter for high-current 3-phase BLDC motor drives in the automotive sector. It supports up to 30 kHz PWM switching frequency, integrates short-circuit detection and diagnostic features, and is AEC-Q100 qualified. The device is housed in a 48-pin PG-VQFN (VQFN-48-4) power package with an exposed thermal pad for superior heat dissipation under high-side/low-side gate-drive switching losses. A 3-phase bridge driver IC belongs to the broader category of gate drivers (also called motor driver pre-drivers or half-bridge drivers) within the semiconductor power management hierarchy: gate driver -> motor driver IC -> power management IC -> semiconductor. It functions as the intelligent control interface between a low-power microcontroller PWM block and a high-current 3-phase MOSFET bridge, handling level shifting, dead-time insertion, charge-pump generation, and protection logic. Without such drivers, microcontrollers cannot directly switch the multi-ampere currents required by automotive 48V or 12V brushless DC motors used in pumps, fans, and eBikes. Key features of the TLE7189F include integrated over-voltage shutdown monitored at Vs and VDH pins, short-circuit protection per phase, programmable dead time to prevent shoot-through, a charge pump for 100% duty-cycle high-side drive, and an SPI/diagnostic interface for fault feedback. The IC accepts low-battery operation down to 6V (cranking survival) and operates across -40C to +150C junction temperature. The 30 kHz PWM capability supports both trapezoidal and field-oriented control (FOC) algorithms. Typical applications span automotive BLDC pumps (water/oil/fuel), electric power steering (EPS), HVAC blowers, eBike traction drives, and 12V/48V mild-hybrid cooling fans. In each scenario the TLE7189F replaces discrete bootstrap-driver designs, reducing BOM count and PCB area by ~40% while providing ASIL-friendly diagnostic outputs. Designers should place the bootstrap capacitors as close as possible to the BSTx pins, use a low-ESR 1uF to 4.7uF ceramic on VCC, and ensure the exposed pad is soldered to a copper area of at least 1 cm^2 to keep junction temperature within AEC-Q100 limits. The datasheet documents a 29-page revision 2.1 from May 2007; refer to the manufacturer datasheet for the full device specification set. This page synthesizes distributor pricing, drop-in alternatives, and automotive design notes beyond the manufacturer datasheet narrative.
TLE7244SLXUMA2 - 8-Ch Low-Side SPI Relay Driver | Infineon
The Infineon TLE7244SLXUMA2 is an 8-channel low-side power switch in PG-SSOP-24-7 package, delivering 290 mA per channel and designed specifically as a relay driver in automotive body and chassis applications. It operates from a supply range of 5 V to 28 V (3 V to 5.5 V logic supply), provides an SPI control and diagnostic interface, and offers four direct input pins for parallel control and PWM operation. Each of the eight outputs is protected against over-current, over-temperature, and short-circuit to ground and to battery. What is a low-side SPI relay driver? A low-side power switch is a type of power distribution IC that sits between the load (typically a relay coil, solenoid, or lamp) and ground, sinking current to switch the load on or off. When controlled by an SPI (Serial Peripheral Interface) link, a single microcontroller can manage many outputs with latched commands, while the driver handles the heavy current and protective functions locally. Low-side drivers belong to the broader category of power management ICs and, more specifically, intelligent load drivers / smart power switches used in automotive electronic control units. Key features of the TLE7244SLXUMA2 include eight open-drain N-channel outputs rated at 290 mA continuous, integrated protection with current limiting and thermal shutdown per channel, an SPI interface for diagnostics and configuration, four dedicated input pins for direct control or PWM generation, a limp-home function to maintain operation under microcontroller fault, and very low quiescent current in standby. The PG-SSOP-24-7 exposed-pad package provides excellent thermal dissipation and is qualified to Infineon's automotive reliability standards. Architecturally, the device pairs eight N-channel DMOS output stages with a digital control core that decodes SPI frames, drives fault flags, and arbitrates between direct-input and SPI commands. The embedded protective functions - over-current, open-load, over-temperature, and reverse battery - are designed to satisfy OEM body-controller module requirements, while the diagnostic word returned over SPI supports ISO 26262 functional-safety development at the system level. Typical applications include automotive body control modules driving relays and solenoids, junction box power distribution, lighting drivers (especially where PWM dimming is required), HVAC flap motors, and other inductive loads where protective switching and diagnostics are essential. The four input pins make it equally suitable as a stand-alone relay driver without MCU intervention during limp-home. When designing with this part, keep output flyback diodes or use relays with built-in freewheeling diodes because the low-side switch cannot clamp inductive kickback on its own. The exposed thermal pad must be soldered to a sufficient copper area on the PCB to keep junction temperature within ratings when driving multiple inductive loads simultaneously. Source: Infineon TLE7244SL product page and distributor datasheets, accessed 2026-09-14. This page combines verified distributor pricing, drop-in alternative analysis, and practical design notes that go beyond what the manufacturer datasheet alone offers, helping engineers select, source, and qualify the TLE7244SLXUMA2 more efficiently.
TLE72732GV33XUMA1 - 3.3V 180mA LDO w/ Window Watchdog | Infineon
The Infineon TLE72732GV33XUMA1 is a monolithic low-dropout (LDO) linear voltage regulator with integrated window watchdog and reset, delivering a fixed 3.3V output at up to 180 mA load current from a 14-pin PG-DSO-14 (exposed pad) package. It is qualified to AEC-Q100 Grade 1 standards and operates over a wide 5.5V to 45V input voltage range, making it purpose-built for harsh automotive ECU environments. The integrated window watchdog supervises microcontroller activity and the reset output provides a defined power-on and undervoltage reset signal. An LDO (Low-Dropout) regulator is a type of linear voltage regulator that can maintain a stable output voltage even when the input voltage approaches the output voltage, with dropout typically under 500 mV. Within the broader power-management IC hierarchy, LDOs sit beneath switching regulators and are preferred for low-noise rails where efficiency is secondary to ripple rejection. The TLE7273-2G family occupies the automotive microcontroller-supply sub-segment, where integrated supervision (watchdog + reset) reduces external component count on the ECU PCB. Key features include ±2% output voltage accuracy, an integrated adjustable-window watchdog (via external resistor), a push-pull reset output with programmable reset delay, current limiting, thermal shutdown, and reverse-polarity protection on the input. The exposed pad on the PG-DSO-14 package provides low thermal resistance for sustained 180 mA loads at elevated ambient temperatures. The regulator uses a bipolar pass-element architecture combined with a bandgap reference, optimized for automotive transient robustness including jump-start and load-dump immunity per ISO 7637. The wide VIN window (up to 45 V transient) and AEC-Q100 Grade 1 qualification (-40 °C to +125 °C junction) make it well suited to under-hood and chassis ECUs. Typical applications include body control modules, gateway ECUs, sensor cluster power rails, HVAC controllers, and lighting ECUs. Any 12 V or 24 V automotive ECU requiring a regulated 3.3 V logic rail with built-in microcontroller supervision is a strong fit. When designing with this part, choose the external resistor at the WADJ pin carefully to set the watchdog window to match the microcontroller's service pulse timing - a misaligned window will trigger spurious resets. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within SOA at full 180 mA load.
TLE72742DATMA1 - 300mA 5V LDO Regulator, 42V Input | Infineon
The Infineon TLE72742DATMA1 is a monolithic integrated low-dropout (LDO) voltage regulator designed for automotive and industrial loads requiring up to 300 mA. Packaged in a PG-TO252-3 (DPAK) surface-mount outline with a thermally conductive tab, the device regulates a wide 5.5 V to 42 V input down to a fixed 5.0 V output with ±2 % accuracy. 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 small, making it ideal as a post-regulator following a pre-converter or for direct use on noisy automotive battery rails. Within the broader power management taxonomy, an LDO belongs to the linear regulator family, which is itself a sub-category of voltage regulators and ultimately part of the power management IC hierarchy used in every automotive ECU. Key features of the TLE72742DATMA1 include very low quiescent current in standby, integrated output current limiting, thermal shutdown, reverse-polarity protection, and stable operation with small ceramic output capacitors. The wide input voltage range tolerates load-dump transients up to 42 V typical in 12 V automotive systems, while the precision bandgap reference holds Vout within ±2 % across line, load, and temperature variation. The device is fabricated using Infineon's robust bipolar process technology optimized for automotive environments. The architecture combines a PNP pass element with comprehensive protection circuitry, enabling reliable operation at junction temperatures up to 150 °C while maintaining tight regulation. The PG-TO252-3 (DPAK) package features an exposed tab that serves as the heatsink, achieving a junction-to-ambient thermal resistance suitable for continuous 300 mA delivery. Typical applications include microcontroller power supplies in body control modules, sensor and actuator power rails, infotainment subsystems, and industrial 24 V bus regulation. Automotive grade qualification makes the part suited for under-hood and cabin-mounted ECUs requiring long-term reliability. Designers should provide adequate PCB copper area on the tab to keep junction temperature within limits, and place input/output ceramic capacitors close to the pins. The wide VIN range makes the device tolerant of cold-crank and load-dump conditions typical of automotive environments. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on standard catalog pages.
TLE75004EPDXUMA1 - 4-Ch Low-Side SPI Switch, 470mA | Infineon
The Infineon TLE75004EPDXUMA1 is a 4-channel low-side power switch with integrated N-channel MOSFETs, each capable of 470 mA continuous drain current, housed in a PG-TSDSO-14-41 exposed-pad package. The device integrates a 16-bit SPI interface for channel control and diagnostic readback, supports 3 V cranking capability for cold-start automotive conditions, and provides a fail-safe (Limp Home) mode that maintains critical outputs when the microcontroller or SPI link fails. A low-side switch is a power distribution topology in which the MOSFET is placed between the load and ground, allowing the load to be tied to a permanent supply rail (e.g., the vehicle battery). This architecture belongs to the broader category of smart power switches (SPS), which combine a power transistor, gate driver, protection circuitry, and a digital diagnostic interface in a single IC. Smart low-side switches have largely replaced discrete MOSFETs + fuses in body electronics because they provide per-channel current limiting, overload shutdown, open-load detection, and thermal protection without external sense resistors. Key features of the TLE75004EPDXUMA1 include per-channel current limiting, open-load detection in both on and off states, over-temperature shutdown with auto-restart, short-to-ground and short-to-battery protection, and reverse battery protection via an external resistor. The SPI interface operates at clock rates up to 5 MHz, allowing fast update of output states and rapid polling of fault registers. An IDLE pin enables the Limp Home mode where input pins directly drive the outputs without SPI intervention. Typical applications include automotive body control modules (BCMs), door modules, seat controllers, and LED lighting drivers where multiple low-current relays, solenoids, or LEDs must be switched under microcontroller supervision. The PG-TSDSO-14-41 package provides an exposed thermal pad that keeps junction temperature low even when all four channels are delivering full current simultaneously. When designing with this part, ensure the SPI lines are pulled up to VCC and the IDLE pin is tied high for normal SPI-controlled operation. The exposed pad must be soldered to a sufficiently large copper pour (at least 1 cm²) to achieve the datasheet thermal resistance. According to the manufacturer datasheet, the device is qualified to AEC-Q100 Grade 1, making it suitable for under-hood and other harsh automotive environments.
TLE75080ESDXUMA1 - 8-Ch SPI High-Side Switch, 330mA | Infineon
The Infineon TLE75080ESDXUMA1 is an 8-channel high-side power switch in a PG-TSDSO-24-21 (exposed pad) package, delivering 330 mA per channel for automotive and industrial relay and LED loads. Each channel integrates an N-channel MOSFET with active current limiting, and the device communicates over a 16-bit SPI interface for diagnostics and PWM control. A high-side switch (also called a smart power switch) is a semiconductor device that sits between a load and the positive supply rail. It replaces mechanical relays and discrete MOSFETs by combining a power transistor with protection, diagnostic, and communication circuitry. High-side switches sit in the family hierarchy: high-side switch -> power distribution switch -> power management IC -> semiconductor, and they enable centralized load control in body control modules, BCMs, and zonal architectures. Key features include 8 independently controlled channels, 16-bit SPI daisy-chain capability, integrated reverse-battery protection, open-load detection in on and off states, overtemperature shutdown with per-channel thermal sensors, and a Limp Home mode that allows safe operation at 3.0 V cranking transients. The device operates across a wide 4.5 V to 28 V supply range and withstands load-dump transients up to 40 V. The architecture uses N-channel MOSFETs with charge-pump-driven gates for true low-RDS(on) switching. Each channel includes current-limit set registers, individual fault flags, and PWM generation up to several hundred Hz. The exposed-pad package provides a thermal resistance below 30 C/W on standard 2 oz copper, supporting sustained 330 mA output per channel. Typical applications include automotive body electronics (lighting, HVAC blowers, seat control), industrial PLC relay drivers, and 24 V LED matrix modules. The combination of SPI diagnostics and cranking tolerance makes it well suited for 12 V automotive subsystems that must survive cold-crank events down to 3 V. When designing with this part, allocate PCB area for the exposed thermal pad and connect it to a solid copper pour. The Limp Home feature requires the SPI watchdog to be configured in the application firmware; an unconfigured watchdog defaults to fail-safe behavior. Per-channel current limit registers must be tuned to the load to avoid nuisance trips on inrush loads such as incandescent lamps or DC motors. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that supplement the manufacturer datasheet and accelerate your evaluation.
TLE75080ESHXUMA1 - 8-Ch SPI High-Side Switch 330mA | Infineon
The Infineon TLE75080ESHXUMA1 is an eight-channel high-side power switch in the PG-TSDSO-24-21 (TSDSO-24) package with 16-bit SPI control, integrated PWM generators, and Limp Home mode, designed for 12 V automotive and industrial loads. Each of the eight channels is rated at 330 mA continuous current and is built on Infineon's Smart Power SPIDER technology, integrating a vertical N-channel power MOSFET with charge pump, gate driver, current sense, and protective circuitry on a single die. The device operates from a nominal 12 V supply (with load-dump and jump-start tolerance typical of the TLE75080 family) and is qualified to AEC-Q100 for automotive body and chassis applications. Key features of this multichannel high-side switch include per-channel diagnostics (open load, short to battery, short to ground, overtemperature), parallel-input capability for direct MCU PWM control, a 16-bit SPI interface for configuration and status readback, and selectable latching or auto-restart fault behavior. The integrated charge pump drives the N-channel MOSFETs fully on at low battery voltage, achieving low R_DS(on) per channel. The Limp Home function allows a predefined safe output pattern if SPI communication is lost, critical for fail-operational body modules. Technically, the TLE75080-ESH belongs to the high-side switch category within the broader power distribution IC hierarchy: high-side switch -> smart power switch -> power management IC -> semiconductor. It is designed as an alternative to discrete MOSFET + fuse combinations, replacing many components with one SPI-controlled block. Each channel's integrated protection eliminates the need for external sense resistors, TVS clamps, and PTCs in many 12 V load drive circuits. Typical applications include automotive body control modules (BCM) driving lamps, LEDs, relays, and small motors; heating systems such as seat heaters and mirror heaters; industrial 24 V (rescaled) load switching; and energy/power distribution nodes in zonal E/E architectures. The PG-TSDSO-24-21 exposed-pad package enables direct PCB thermal dissipation without a heatsink at typical 12 V loads. When designing with this device, follow Infineon's PCB layout guidance for the exposed thermal pad, keep the SPI bus length short, and add a reverse-polarity protection diode at VBAT. Decouple VBAT and VS pins with a 100 nF ceramic plus a low-ESR electrolytic capacitor as recommended in the TLE75080-ESH datasheet. This page synthesizes distributor pricing, drop-in alternatives from the Infineon SPIDER family, and practical design notes for 12 V body-control applications that are not consolidated in the manufacturer datasheet.
TLE75602ESHXUMA1 - 8-Ch SPI Power Switch 330mA | Infineon
The Infineon TLE75602ESHXUMA1 is an 8-channel low-side and high-side SPI-controlled power switch housed in a PG-TSDSO-24-21 package, delivering up to 330 mA per channel for 12 V automotive and industrial loads. Built on Infineon's SPIDER (Smart Power Integration Device with Embedded Regulation) technology, the device integrates eight MOSFET output stages, a 16-bit SPI interface, configurable PWM generators per channel, and comprehensive diagnostic features in a single exposed-pad thermally enhanced surface-mount package. An SPI-controlled power switch (sometimes called a multi-channel high-side switch, low-side switch, or smart solid-state relay) is a power-management IC that replaces discrete MOSFETs, fuses, and relay driver circuitry with an integrated, microcontroller-addressable load driver. It sits hierarchically as a child of power distribution switches, which themselves are a sub-family of power management ICs. By consolidating eight independently controllable outputs behind a serial-peripheral-interface (SPI) command set, the TLE75602-ESH eliminates dozens of discrete components while providing per-channel fault reporting, current monitoring, and PWM dimming that discrete implementations cannot match. Key features include an operating voltage range that supports 3.0 V cranking transients (typical 4.5 V to 28 V with load-dump survivability above this range), per-channel Rds(on) in the sub-200 mΩ class, integrated reverse-battery protection via an external resistor, programmable overcurrent shutdown, open-load detection in both on and off states, and overtemperature pre-warning and shutdown. The 16-bit SPI runs at clock rates up to 5 MHz and allows parallel operation of multiple TLE75602 devices for systems requiring more than eight channels. Architecturally, each of the eight channels combines an N-channel MOSFET output stage with charge pump, gate driver, current-sense amplifier, and fault logic. The on-chip diagnostic block can flag short-to-battery, short-to-ground, open load, and overtemperature events back to the host microcontroller through dedicated SPI status registers, enabling ASIL-aware functional-safety implementations under ISO 26262. Typical applications include automotive body controllers driving lamps, LEDs, relays, and small motors; zone-ECU load switching; industrial 24 V PLC discrete I/O; HVAC blower control; and centralized power distribution modules. The device's AEC-Q100 qualification and 3.0 V cranking capability make it well suited for cold-start conditions. When designing with this part, place at least one 100 nF decoupling capacitor close to the VCC pin and follow the PCB layout recommendations in the Infineon datasheet to keep the exposed thermal pad soldered for low RthJA. Always configure unused channels in a defined OFF state via SPI to avoid floating-output diagnostic noise. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.