Infineon Technologies TLE72792GV33XUMA1

Overview

TLE72792GV33XUMA1 from Infineon Technologies is an automotive-grade monolithic low-dropout voltage regulator delivering a fixed 3.3 V output at up to 180 mA, with ±2% output tolerance, ultra-low 36 µA quiescent current, and integrated reset generator with adjustable power-on delay-designed for permanent battery-connected microcontroller supply in engine control units.

For engineers reviewing the TLE72792GV33XUMA1 datasheet, TLE72792GV33XUMA1 pinout, TLE72792GV33XUMA1 application, or TLE72792GV33XUMA1 equivalent, key selection criteria include its 45 V max input range, -40 °C to +150 °C junction temperature operation, early warning sense interface, enable-controlled shutdown (<3 µA), and PG-DSO-14 thermal pad layout compatibility.

Technical Context

The TLE72792GV33XUMA1 integrates a bandgap reference, charge pump, overtemperature shutdown, and reset generator with configurable delay via RM pin logic level. Its early warning sense circuit (SI/SO) monitors input voltage drop before regulation failure, enabling system-level fault anticipation.

It features dual protection architecture: current-limited output with short-circuit foldback and thermal shutdown triggered at ≥160 °C junction temperature. The open-drain RO output requires external pull-up for 3.3 V systems, while SO provides sense comparator output with hysteresis referenced to VQ.

Key Specifications

Pinout & Package

Package: PG-DSO-14 (14-pin plastic dual small outline, exposed thermal pad). Pin 13 (I) and pin 9 (Q) require local 100 nF and 470 nF ceramic capacitors respectively; pins 2–5 and 10–12 are GND connections tied to PCB heat sink area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PDBVR and MAX1725EUT33+T, the TLE72792GV33XUMA1 uniquely combines AEC-Q100 Grade 0 operation, integrated reset/sense diagnostics, and 150 °C thermal robustness-making it irreplaceable in safety-critical powertrain and ADAS LDO roles.

Availability

TLE72792GV33XUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering units requiring stable component supply across automotive production lifecycles.

Supply support for TLE72792GV33XUMA1 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 automotive qualification infrastructure.

The TLE7279 series belongs to Infineon's automotive power management product line, engineered specifically for harsh-environment microcontroller supply with integrated diagnostics and fail-safe behavior.

FAQ

What is the minimum input voltage required for regulation at full 180 mA load?

The TLE72792GV33XUMA1 maintains 3.3 V output with ≤2% deviation down to an input voltage of 3.6 V at 180 mA load, based on its 300 mV typical dropout voltage. Below this threshold, output collapses linearly; operation is guaranteed only within the functional range of 4.2 V to 45 V per datasheet Section 4.2.2.

How should the external pull-up resistor for the RO pin be selected?

For 3.3 V systems, use ≥5.6 kΩ pull-up to ensure RO sinks ≤1.0 mA while maintaining V_RO ≤ 0.25 V low-state. Calculated minimum value is R_ext-min = (3.3 V − 0.25 V) / 1.0 mA = 3.05 kΩ; 5.6 kΩ provides margin for leakage and temperature drift.

Does the TLE72792GV33XUMA1 support reverse battery protection?

No. The device lacks integrated reverse-polarity protection; external protection (e.g., series Schottky diode or MOSFET-based circuit) is required if reverse battery connection is possible in the target application.

Can the SI/SO early warning function operate independently of the main regulator output?

Yes. The SI input monitors raw input voltage (VI) regardless of Q output status. SO asserts when VI drops below the early warning threshold (typically ~4.0 V), even if Q is unregulated or disabled via EN-enabling pre-failure diagnostics before brownout.