TLE42764DVATMA1 - 400mA 40V Adjustable LDO Regulator | Infineon
MPN: TLE42764DVATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.29 | $2.29 |
| 10 | $1.95 | $19.50 |
| 100 | $1.42 | $142.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.88 | $880.00 |
| 2,500 | $0.74 | $1,850.00 |
TLE42764DVATMA1 Overview
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.
Drop-in alternatives for TLE42764DVATMA1 — 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 TLE42764DVATMA1 (same form factor and footprint) — differing in Package, Protection Features, Maximum Output Current, Input Voltage Range, Dropout Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLE42764DV
✅ Drop-In📋 Reference alternative (not in catalog)
TLE42754DATMA1
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →TLE72742DATMA1
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →TLE42662GSV33HTMA2
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →TLE42764DVATMA1 Maximum Ratings & Electrical Characteristics
| Topology | LDO (Low-Dropout) Linear Voltage Regulator |
| Output Type | Adjustable (fixed 5 V variant in family) |
| Input Voltage Range | 4.5 V to 40 V |
| Output Voltage Range | 2.5 V to 20 V (adjustable version) |
| Maximum Output Current | 400 mA |
| Dropout Voltage | 250 mV (typical at 400 mA) |
| Output Voltage Accuracy | ±2 % |
| Operating Temperature Range | -40 C to +150 C (TJ) |
| Package | PG-TO252-5 (DPAK-5, 4 Leads + Tab) |
| Mounting Type | Surface Mount |
| Protection Features | Overload, short circuit, reverse polarity, overtemperature |
| AEC-Q100 Qualification | Yes (automotive grade) |
| RoHS Status | Compliant (lead-free PG-TO252 package) |
| Output Polarity | Positive |
| Process Technology | Monolithic bipolar with PNP pass transistor |
TLE42764DVATMA1 Pin Configuration
| Pin 1 | INPUT (VIN) — Unregulated input voltage, 4.5 V to 40 V; place 100 nF + 10 uF decoupling close to this pin |
| Pin 2 | GROUND — Common ground return for input and output |
| Pin 3 | OUTPUT (VOUT) — Regulated output voltage; place output capacitor here |
| Pin 4 | ADJ (feedback) — Adjustable-output feedback node, connect to external resistor divider; tied to VOUT on fixed 5 V variants |
| Pin 5 | RESET / EN — Reset output / enable input depending on variant - see datasheet |
Typical Applications
TLE42764DVATMA1 is suitable for 6 applications: Automotive Body and Chassis ECU Power, 24V Commercial Vehicle / Truck Power Rail, Automotive Sensor Supply Rails, Industrial 24V Sensor / PLC Point-of-Load Regulation, Infotainment and Instrument Cluster Supplies, Battery-Powered Always-On Automotive Modules.
Automotive Body and Chassis ECU Power
The TLE42764DVATMA1 is purpose-built for 12 V automotive body and chassis ECUs such as BCMs, door modules, and seat controllers. Its 4.5 V-40 V input tolerates cranking dips down to ~5 V and 40 V load-dump transients, while the 400 mA output easily powers microcontroller plus CAN transceiver plus relay drivers. The integrated reverse-polarity, short-circuit, and overtemperature protections match the harsh under-bust automotive environment, and AEC-Q100 qualification supports PPAP documentation. Estimated: at 14 V battery, 5 V output, 200 mA load, dissipation is (14-5) x 0.2 = 1.8 W, manageable on 1 square inch of DPAK copper pour.
Recommended
24V Commercial Vehicle / Truck Power Rail
Trucks, buses, agricultural, and construction vehicles use 24 V nominal battery systems with transients reaching 40 V or higher. The TLE42764DVATMA1's 40 V absolute-maximum input directly accepts this rail, regulating down to 5 V or 3.3 V for telematics, lighting controllers, and sensor clusters. Compared to a switching pre-regulator, the LDO adds no EMI, simplifying compliance with vehicle conducted-emission standards. The 400 mA output is sufficient for an entire small ECU plus its sensors. The DPAK-5 package's thermal tab dissipates continuous (VIN - VOUT) x IOUT losses effectively when soldered to adequate copper.
Recommended
Automotive Sensor Supply Rails
Body and powertrain sensors - Hall-effect, pressure, oxygen, NOx - require tightly regulated 5 V or 3.3 V rails. The TLE42764DVATMA1's ±2% output accuracy and low noise ensure sensor readings stay within calibration tolerance, while its adjustable output (2.5 V-20 V) lets the same part serve multiple sensor types via a single resistor divider. Reverse-polarity protection on the input prevents field failures if a sensor harness is wired backwards during service. The 400 mA rating supports powering a sensor cluster from one regulator.
Recommended
Industrial 24V Sensor / PLC Point-of-Load Regulation
Industrial 24 V PLC and sensor backplanes use point-of-load LDOs downstream of a switching bulk regulator. The TLE42764DVATMA1 acts as a clean post-regulator, removing high-frequency ripple from the pre-regulator and providing a low-noise 5 V or 3.3 V rail for analog signal conditioning, ADC references, and sensor excitation. Its 40 V input survives industrial surge events on long cable runs. The integrated protections make it tolerant of field wiring faults, an essential property in industrial automation.
Recommended
Infotainment and Instrument Cluster Supplies
Automotive infotainment head units and instrument clusters need clean 5 V or 3.3 V rails for displays, audio DACs, and graphics processors. The TLE42764DVATMA1's low noise floor prevents audible buzz from switching into the audio chain, and its adjustable output simplifies multi-rail designs (5 V for analog, 3.3 V for digital logic from the same part number with a different feedback divider). AEC-Q100 qualification and the automotive temperature range (-40 C to +150 C TJ) suit dashboard environments exposed to direct sunlight.
Recommended
Battery-Powered Always-On Automotive Modules
Modules that remain powered during key-off - key fob receivers, tire-pressure monitors (TPMS), and alarm systems - demand very low quiescent current to preserve battery life. The TLE42764DVATMA1 is designed for low-Iq standby operation in always-on automotive modules, accepting the full 40 V load-dump range without additional protection components. Its small DPAK-5 footprint fits inside the cramped enclosures of TPMS valve-stem modules.
Recommended
Recommended Products Summary
Engineering reference data for TLE42764DVATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42764DV | TLE42754DATMA1 | TLE72742DATMA1 | TLE42662GSV33HTMA2 |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TO252-5 (DPAK-5) | PG-TO252-5 (DPAK-5) | PG-TO252-5 (DPAK-5) | PG-TO252-5 (DPAK-5) | PG-TO252-5 (DPAK-5) |
| Input Voltage Range | 4.5 V to 40 V | 4.5 V to 40 V | 5.5 V to 42 V (verify per datasheet) | 5 V to 42 V (verify per datasheet) | 5.5 V to 45 V (verify per datasheet) |
| Output Voltage | Adjustable (2.5 V to 20 V) | Adjustable / 5 V fixed (family) | 5 V fixed | 5 V fixed (family) | 3.3 V fixed |
| Output Accuracy | ±2 % | ±2 % | ±2 % (verify) | ±2 % (verify) | ±2 % (verify) |
| Automotive Qualification (AEC-Q100) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Wide 4.5 V-40 V input with AEC-Q100 automotive qualification (vs Generic 12 V industrial LDOs)
- Adjustable output covers 2.5 V-20 V from a single part number (vs Fixed-output LDOs (e.g. TLE42754DATMA1 5 V fixed))
- Integrated reverse-polarity, short-circuit, and overtemperature protection (vs Discrete regulators requiring external protection)
Design Notes
Estimated: at VIN=14 V, VOUT=5 V, IOUT=400 mA, dissipation is (14-5) x 0.4 = 3.6 W. The DPAK-5 thermal tab MUST be soldered to a copper pour of at least 1 square inch (645 mm^2) on the top or bottom PCB layer to keep theta_JA below ~45 C/W, ensuring TJ(max)=150 C is not exceeded even at 85 C ambient. Without adequate copper, the part will thermal-limit well before 400 mA.
Place a 100 nF ceramic capacitor directly at Pin 1 (VIN) and a 10 uF low-ESR ceramic or tantalum capacitor at Pin 3 (VOUT) within 5 mm of the IC. Insufficient input capacitance can produce instability; insufficient output capacitance degrades load-transient response. For adjustable-output variants, the feedback divider at Pin 4 (ADJ) should use 1% resistors to preserve the ±2% output accuracy.
Do not exceed the 40 V absolute maximum input - automotive load-dump events exceed 35 V briefly. Add an external TVS diode (e.g., 36 V working voltage) on the input rail for additional transient safety margin. For the adjustable version, leaving Pin 4 (ADJ) floating causes the output to rise to its internal default; always connect a feedback divider or use the fixed 5 V variant.
Route the high-current ground return directly to the exposed tab and PCB copper pour, separate from the analog feedback ground at Pin 4 (ADJ). Use a star-ground topology or wide ground plane. Keep the feedback trace short to avoid picking up switching noise from upstream regulators.
Compliance Information
RoHS-compliant lead-free PG-TO252-5 package; AEC-Q100 qualified per Infineon datasheet; halogen-free status not explicitly stated in verified data - set to unknown.
