Infineon Technologies TLE42702DATMA1

Overview

TLE42702DATMA1 from Infineon Technologies is a 5 V fixed-output, low-dropout linear voltage regulator with integrated reset functionality, ±2% output voltage tolerance, 650 mA continuous output current capability, and automotive-grade AEC-Q100 qualification. It operates across 6–42 V input range, features reverse polarity and overvoltage (65 V/400 ms) protection, and is designed for power supply regulation in engine control units, body electronics, and ADAS domain controllers.

For engineers reviewing the TLE42702DATMA1 datasheet, TLE42702DATMA1 pinout, TLE42702DATMA1 application, or TLE42702DATMA1 equivalent, key selection criteria include its adjustable reset delay timing, thermal shutdown behavior, short-circuit proof operation, and PG-TO252-5 package compatibility with high-reliability automotive PCB layouts.

Technical Context

The TLE42702DATMA1 implements a bandgap-referenced control amplifier driving a series pass transistor with saturation control to maintain regulation under varying load and input conditions. Its internal reset generator monitors output voltage via a precision threshold (4.5–4.8 V) and delivers an open-collector reset signal with programmable delay via external capacitor on the D pin.

Protection circuitry includes overtemperature shutdown (150 °C junction limit), reverse polarity blocking, and overvoltage clamping up to 65 V for ≤400 ms. ESD robustness is rated at ±2 kV HBM, and thermal resistance is 79 K/W (R_thJA) in its PG-TO252-5 package with standard PCB mounting.

Key Specifications

Pinout & Package

Package: PG-TO252-5 (DPAK-5), thermally enhanced surface-mount package with exposed die pad connected internally to GND for heatsinking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output automotive LDO regulator applications.

Compared with NCP1117ST50T3G and TLV73350PDBVR, the TLE42702DATMA1 uniquely combines AEC-Q100 qualification, 65 V transient tolerance, adjustable reset, and 650 mA delivery in a thermally optimized DPAK package-making it the only option among the three suitable for ASIL-B compliant main power rails.

Availability

TLE42702DATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS domain controllers requiring stable component supply across automotive production lifecycles.

Supply support for TLE42702DATMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.

The TLE42702DATMA1 belongs to Infineon's OPTIREG™linear family-designed specifically for robust, single-chip power supply regulation in harsh automotive environments where reliability, thermal resilience, and integrated protection are mandatory.

FAQ

What is the minimum input voltage required for regulation?

The TLE42702DATMA1 maintains 5 V regulation down to 5.35 V input at full 650 mA load, based on its maximum drop voltage of 700 mV. Below 6 V input, output voltage drops linearly with input; the device remains functional but exits regulation. Input must stay ≥6 V for guaranteed specification compliance per datasheet Table 2.

How is the reset delay time calculated?

Reset delay t_RESET is determined by the external capacitor C_D on pin D and the internal pull-up resistor R_int = 30 kΩ (typical), following t_RESET ≈ 0.7 × R_int × C_D. For example, a 100 nF capacitor yields ~2.1 ms delay. The actual threshold is set at 4.65 V, and RO asserts low once V_Q falls below that level.

Can the TLE42702DATMA1 be used with a 24 V truck battery system?

Yes-the device supports continuous input up to 42 V and transient spikes up to 65 V for ≤400 ms, fully covering ISO 7637-2 Pulse 5a requirements for 24 V commercial vehicle systems. Its thermal design (R_thJA = 79 K/W) must be validated for sustained 24 V input at target load current using the provided PCB copper area guidelines.

Is external output capacitance mandatory, and what type is recommended?

Yes-22 µF low-ESR (<3 Ω) aluminum polymer or tantalum capacitor is mandatory on pin Q per datasheet Section 5.1. Ceramic capacitors alone are insufficient due to insufficient ESR for phase margin stability. The capacitor must be placed within 5 mm of the Q and GND pins to ensure transient response and prevent oscillation under dynamic load steps.