Infineon Technologies TLE4675DATMA1

Overview

TLE4675DATMA1 from Infineon Technologies is a monolithic automotive-grade LDO linear voltage regulator delivering a fixed 5 V ±2% output at up to 400 mA, featuring integrated reset functionality with programmable delay, reverse polarity protection, and operation across -40 °C to +150 °C junction temperature. It accepts input voltages from -42 V to +45 V and maintains regulation down to a dropout voltage of ≤0.5 V at full load, making it suitable for engine control unit (ECU) power supply in 12 V/24 V vehicle systems.

For engineers reviewing the TLE4675DATMA1 datasheet, TLE4675DATMA1 pinout, TLE4675DATMA1 application, or TLE4675DATMA1 equivalent, key selection criteria include its AEC-Q100 qualification, open-collector reset output active down to VQ = 1 V, ultra-low quiescent current (<100 µA), thermal shutdown behavior, and PG-TO252-5 package compatibility with board-level heatsinking requirements.

Technical Context

The TLE4675DATMA1 integrates a bandgap reference, error amplifier, pass transistor, and reset comparator with external RC timing on the D pin. Its regulator core uses a PNP-based architecture enabling low dropout and high line transient robustness without requiring external compensation.

The reset function monitors the regulated 5 V output (Q pin) and asserts an active-low open-drain signal (RO pin) when VQ falls below 4.65 V (typical), with delay set by a capacitor connected between D and GND-enabling configurable reset hold times from 1 ms to >1 s depending on capacitance value and temperature.

Key Specifications

Pinout & Package

Package: PG-TO252-5 (D-Pak variant with exposed thermal pad); thermally enhanced for PCB heatsinking via TAB-to-GND connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70750PDBVR and MAX16910ATA+T, the TLE4675DATMA1 uniquely combines reverse polarity tolerance, AEC-Q100 Grade 0 qualification, and programmable reset in a thermally optimized DPAK package-making it the only choice for under-hood ECU main rail regulation where safety and survivability are mandatory.

Availability

TLE4675DATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS camera ECUs requiring stable component supply across automotive production lifecycles.

Supply support for TLE4675DATMA1 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 electronics, and industrial control ICs, with global manufacturing and quality certification aligned to IATF 16949.

The TLE4675 belongs to Infineon's TLE automotive power system IC family, designed specifically for robust, integrated power supply and supervision in harsh-temperature engine bay and chassis applications.

FAQ

What is the minimum input voltage required for regulation?

The TLE4675DATMA1 begins regulating when input exceeds VQ + V_dr, where V_dr is the dropout voltage. At 400 mA load, dropout is ≤0.5 V, so regulation starts at ~5.5 V. However, extended operation down to 3.3 V input is supported-though output follows input (unregulated) in that range per functional range specification.

Can the reset delay be disabled?

Yes. Leaving Pin 4 (D) unconnected disables the reset delay function. In this configuration, the reset output (RO) responds immediately to VQ falling below the threshold (4.65 V typ.), with propagation delay <10 µs. No pull-up or capacitor is required on D for basic reset operation.

Is an external output capacitor mandatory?

Yes. A minimum 22 µF ceramic or tantalum capacitor with ESR ≤2.5 Ω at 10 kHz is required between Q (Pin 5) and GND. This ensures stability, transient response, and proper reset circuit operation. Omitting it risks oscillation, poor load regulation, and false reset assertions.

Does the TLE4675DATMA1 require a heatsink?

Not as a separate component-the PG-TO252-5 package features an exposed thermal pad (TAB) that must be soldered to a ≥2 cm² copper area on the PCB acting as an integral heatsink. Without adequate PCB copper, thermal shutdown may trigger above 200 mW power dissipation at +125 °C ambient.