TLE42764GVATMA1 - 400mA, 40V Adjustable LDO | Infineon
MPN: TLE42764GVATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.46 | $2.46 |
| 10 | $2.21 | $22.10 |
| 100 | $1.95 | $195.00 |
| 500 | $1.72 | $860.00 |
| 1,000 | $1.52 | $1,520.00 |
TLE42764GVATMA1 Overview
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.
Drop-in alternatives for TLE42764GVATMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLE42764GVATMA1 (same form factor and footprint) — differing in Dropout Voltage, Input Voltage Range, Operating Temperature Range, Package, Protection Features.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLE42764GV50ATMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLE42764DVATMA1
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →TLE42754G
✅ Drop-In📋 Reference alternative (not in catalog)
NCV4276CDT50RKG
✅ Drop-In📋 Reference alternative (not in catalog)
TPS7B4254-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TLE42764GVATMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| MPN | TLE42764GVATMA1 |
| Product Type | LDO Linear Voltage Regulator |
| Output Configuration | Positive, Adjustable (2.5 V to 20 V) |
| Maximum Output Current | 400 mA |
| Input Voltage Range | Up to 40 V |
| Dropout Voltage | 500 mV (typical at full load) |
| Output Voltage Tolerance | ±2% |
| Output Voltage (Fixed Variants) | 5.0 V (TLE42764GV50 family) |
| Reset Output | Yes (with adjustable delay) |
| Operating Temperature Range | -40 °C to +150 °C (junction) |
| Package | PG-TO263-5-1 (D²Pak, 5 leads + tab) |
| Mounting Type | Surface Mount |
| Protection Features | Overload, Short Circuit, Overtemperature Shutdown |
| Automotive Qualification | AEC-Q100 qualified |
| RoHS Compliance | Compliant (Pb-free D²Pak) |
| Lead-Free | Yes |
TLE42764GVATMA1 Pin Configuration
| Pin 1 | IN — Input voltage (up to 40 V) |
| Pin 2 | OUT — Regulated output voltage (2.5 V to 20 V adjustable) |
| Pin 3 | GND — Ground reference |
| Pin 4 | ADJ/RESET — Adjustable feedback (ADJ) or reset delay timing |
| Pin 5 | RESET — Reset output to MCU (active low) |
| Pin TAB | TAB — Exposed thermal tab - solder to copper pour for heat dissipation |
Typical Applications
TLE42764GVATMA1 is suitable for 6 applications: Automotive Body Control ECU Supply, Automotive Powertrain Sensor Supply, HVAC Control Module Power, Automotive Instrument Cluster Supply, Industrial 24V PLC Power Rail, Automotive Infotainment Auxiliary Supply.
Automotive Body Control ECU Supply
The TLE42764GVATMA1's 40 V maximum input voltage, 400 mA output current, and AEC-Q100 qualification make it ideally suited for automotive body and chassis ECUs powered from the 12 V battery bus. The wide VIN margin comfortably handles load-dump transients up to 35 V and cold-crank dips down to 6 V, while the integrated reset output supervises the host MCU supply rail and reduces BOM cost by eliminating a separate supervisor IC. Compared to a switching regulator, the LDO's clean output avoids EMI that could disturb CAN bus or LIN transceiver logic, and the D²Pak exposed tab provides reliable thermal dissipation in sealed under-dash enclosures.
Recommended
Automotive Powertrain Sensor Supply
Powertrain sensors such as MAP, MAF, oxygen, and crankshaft-position sensors require clean, low-noise 5 V rails for accurate ADC conversion under wide temperature swings. The TLE42764GVATMA1's adjustable output (2.5 V to 20 V via external feedback resistors) lets a single regulator serve both 5 V sensor supplies and 3.3 V logic rails, while the AEC-Q100 qualification ensures reliable operation at engine-bay temperatures up to 150 °C junction. The integrated reset and short-circuit protection guard against wiring harness faults common in powertrain environments.
Recommended
HVAC Control Module Power
HVAC control modules in passenger vehicles combine a microcontroller, blower motor driver, and actuator interfaces, all of which require stable low-noise power. The TLE42764GVATMA1's 400 mA output current can supply the MCU, communication transceivers, and small sensors simultaneously, while the 40 V input rating tolerates jump-start and load-dump events. The D²Pak package's exposed tab simplifies PCB thermal layout in modules mounted near heat sources, and the adjustable output (via external resistor divider) supports both 5 V and 3.3 V rails from a single regulator family.
Recommended
Automotive Instrument Cluster Supply
Instrument clusters integrate analog gauge drivers, LCD/LED displays, and a graphics MCU, all demanding low-noise power to avoid meter jitter and pixel artifacts. The TLE42764GVATMA1's linear topology produces no switching noise that could couple into sensitive analog gauge amplifiers, while the integrated reset output ensures clean MCU startup after battery reconnect. AEC-Q100 qualification and the wide operating temperature range match the harsh thermal environment behind the dashboard where ambient temperatures can exceed 100 °C in summer sun.
Recommended
Industrial 24V PLC Power Rail
Industrial programmable logic controllers (PLCs) operating from 24 V backplanes benefit from the TLE42764GVATMA1's 40 V maximum input rating and integrated protection features. The 400 mA output can power the PLC's CPU module, communication interfaces, and small analog front-ends, while the integrated reset output simplifies deterministic controller startup. The DPAK-compatible D²Pak package supports through-hole-style thermal management suitable for DIN-rail mounted industrial equipment, and the device's overload and overtemperature protection ensures graceful failure in fault scenarios.
Recommended
Automotive Infotainment Auxiliary Supply
Infotainment head units contain multiple voltage domains (5 V for legacy audio, 3.3 V for digital logic, 1.8 V for DDR memory) that require post-regulation from the main 12 V or backup-battery rail. The TLE42764GVATMA1's adjustable output and 400 mA capability make it an excellent choice for an intermediate 5 V or 3.3 V rail that subsequently feeds downstream LDOs or PMICs. Its low quiescent current supports start-stop micro-hybrid fuel-saving architectures where the infotainment system must wake instantly from a quiescent state on ignition.
Recommended
Recommended Products Summary
Engineering reference data for TLE42764GVATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42764GV50ATMA1 | TLE42764DV | TLE42754G | NCV4276CDT50RKG | TPS7B4254-Q1 |
|---|---|---|---|---|---|---|
| Package | PG-TO263-5-1 (D²Pak) | PG-TO263-5-1 (D²Pak) | PG-TO252-5 (DPAK) | PG-TO263-5-1 (D²Pak) | DPAK-5 | TO-263-5 |
| Brand | Infineon | Infineon | Infineon | Infineon | onsemi | Texas Instruments |
| Output Current | 400 mA | 400 mA | 400 mA | 450 mA | 400 mA | 150 mA |
| Input Voltage (max) | 40 V | 40 V | 40 V | 45 V | 45 V | 40 V |
| Output Voltage | Adjustable 2.5-20 V | Fixed 5 V | Adjustable 2.5-20 V | Adjustable 2.5-20 V | Fixed 5 V | Adjustable (tracking) |
| Dropout Voltage | 500 mV | 500 mV | 500 mV | 450 mV | 500 mV | 200 mV |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Reset Output | Yes | Yes | Yes | No | Yes | No |
Key Differentiators
- Adjustable output from 2.5 V to 20 V versus fixed 5 V (vs TLE42764GV50ATMA1)
- Integrated reset output with adjustable delay (vs TLE42754G)
- AEC-Q100 automotive qualification with 40 V input rating (vs NCV4276CDT50RKG)
Design Notes
The PG-TO263-5-1 D²Pak package relies on the exposed metal tab as the primary heat dissipation path. Solder the tab to a minimum copper pour of 1 square inch (per layer) on the PCB to achieve the rated thermal resistance. At 400 mA output current with VIN=14 V and VOUT=5 V (typical automotive body ECU case), power dissipation is approximately 3.6 W, requiring substantial copper or forced-air cooling to keep the junction temperature below 150 °C at 85 °C ambient.
Place the input capacitor (1 µF minimum ceramic) as close as possible to the IN pin and the output capacitor (22 µF minimum low-ESR ceramic or tantalum) as close as possible to the OUT pin. Minimize trace inductance between the IC ground and the capacitor ground returns. The exposed thermal tab should connect to the ground plane through multiple thermal vias for optimal heat spreading.
Estimated: Do not operate the input voltage continuously at or above 40 V - this is the absolute maximum and any overshoot from inductive transients can damage the device. Add a transient voltage suppressor (TVS) or input protection resistor for automotive load-dump environments exceeding 35 V. The reset output is active-low open-collector and requires an external pull-up resistor to VOUT or a logic supply; do not leave it floating. For the adjustable version, use 1% tolerance feedback resistors to maintain ±2% output accuracy.
Compliance Information
AEC-Q100 qualified for automotive applications. RoHS-compliant Pb-free D²Pak package. Halogen-free status not explicitly listed in distributor data - confirmed unknown.
