Infineon Technologies TLE72792EV50XUMA1

Overview

TLE72792EV50XUMA1 from Infineon Technologies is an automotive-grade monolithic low-dropout voltage regulator with integrated reset generator, early warning sense input, and enable control. It delivers a fixed 5 V output at up to 180 mA, features ±2% output voltage tolerance, ultra-low 36 µA quiescent current, and operates across -40 °C to +150 °C junction temperature for permanent battery-connected microcontroller supply in engine control units.

For engineers reviewing the TLE72792EV50XUMA1 datasheet, TLE72792EV50XUMA1 pinout, TLE72792EV50XUMA1 application, or TLE72792EV50XUMA1 equivalent, key selection criteria include its PG-SSOP-14 exposed pad package, 45 V absolute max input, adjustable power-on reset delay via RM pin, integrated 20 kΩ pull-up on RO, and thermal shutdown protection at 150 °C.

Technical Context

The TLE72792EV50XUMA1 integrates a bandgap reference, charge pump, overtemperature shutdown, and reset generator with configurable delay timing via the RM pin (LOW = fast, HIGH = slow). Its early warning function uses SI/SO pins to monitor input voltage pre-failure, enabling system-level fault anticipation before regulator dropout.

It employs internal current limiting and thermal foldback to protect against short-circuit and overload conditions. The device supports shutdown via EN pin, reducing quiescent current below 3 µA, and requires only a 100 nF ceramic capacitor on I and 470 nF on Q with ≤3 Ω ESR for stable operation.

Key Specifications

Pinout & Package

Package: PG-SSOP-14 with exposed thermal pad (connected to GND on PCB for enhanced heat dissipation; R_thJC = 14 K/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and MAX1725EUT50+T, the TLE72792EV50XUMA1 uniquely integrates reset, early warning, enable, and Grade 0 thermal robustness - essential for automotive ECU power integrity where functional safety and fault prediction are mandatory.

Availability

TLE72792EV50XUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS camera modules requiring stable component supply under extended temperature and high-reliability automotive conditions.

Supply support for TLE72792EV50XUMA1 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 industrial control solutions, with global manufacturing and AEC-Q100 validation infrastructure.

The TLE7279-2 series belongs to Infineon's automotive power management portfolio, designed specifically for microcontroller supply in harsh environments - emphasizing ultra-low IQ, wide input range, and integrated system-level supervision functions.

FAQ

What is the purpose of the SI and SO pins on the TLE72792EV50XUMA1?

The SI (Sense Input) pin monitors an external voltage-such as battery or upstream supply-for early voltage degradation. When SI drops below a threshold, the SO (Sense Output) pin asserts low, providing advance warning before the main output Q collapses. This enables host MCU to initiate controlled shutdown or diagnostics prior to brownout, improving system reliability in automotive applications.

Can the reset delay time be adjusted, and how is it configured?

Yes, the power-on reset delay time is selected via the RM (Reset Mode) pin: pulling RM LOW configures fast timing (~10 ms), while pulling RM HIGH selects slow timing (~100 ms). The delay begins once V_Q reaches ≥1 V and ends when V_Q crosses the reset threshold V_RT = 4.65 V. No external components are required-timing is internally calibrated.

Is an external pull-up resistor needed on the RO pin?

No. The TLE72792EV50XUMA1 integrates a 20 kΩ pull-up resistor from RO to Q, so no external component is required for reset signaling. This differs from the GV33/GV26 variants, which require an external pull-up. The internal pull-up ensures RO is high-impedance when V_Q < 1 V and actively pulled to V_Q otherwise.

How should the exposed thermal pad be connected on the PG-SSOP-14 package?

The exposed pad must be soldered to a dedicated GND copper pour on the PCB, with multiple thermal vias connecting to inner GND planes. It serves as the primary thermal conduction path (R_thJC = 14 K/W) and must not be left floating. Electrical connection to GND is mandatory-not optional-for both thermal performance and electrical stability.