Infineon Technologies TLE4299GV33XUMA1

Overview

TLE4299GV33XUMA1 from Infineon Technologies is a monolithic 3.3 V ±2% low-drop linear voltage regulator in PG-DSO-8-16 package, delivering up to 150 mA output current with input voltage range 4.4 V to 45 V. It integrates power-on/under-voltage reset, adjustable reset delay via external capacitor, early warning sense function (SI/SO), and operates down to V_I = 1 V for reset assertion - designed for automotive microcontroller supply under harsh conditions.

For engineers reviewing the TLE4299GV33XUMA1 datasheet, TLE4299GV33XUMA1 pinout, TLE4299GV33XUMA1 application, or TLE4299GV33XUMA1 equivalent, key selection criteria include its AEC-Q100 qualification, <1 µA inhibit-off quiescent current, reset threshold adjustability, SI-based early warning capability, and robust protection against reverse polarity, overtemperature, short circuit, and load dump.

Technical Context

The TLE4299GV33XUMA1 uses a PNP-based regulation architecture enabling ultra-low dropout (V_IN – V_OUT ≥ 1.1 V typical at 150 mA) and operation down to 1 V input for reset functionality. Its internal bandgap reference ensures ±2% output accuracy across –40 °C to +150 °C junction temperature.

Reset logic employs an external capacitor (D pin) to set delay time and threshold adjustment via RADJ resistor divider; SI input enables programmable early warning with hysteresis (V_SI,low/V_SI,high), while RO provides open-collector reset output with internal 20 kΩ pull-up to Q.

Key Specifications

Pinout & Package

Package: PG-DSO-8-16 (8-pin exposed pad SOIC variant, RoHS-compliant, AEC-Q100 qualified).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-drop automotive voltage regulator applications.

Compared with TLV73333PDBVR and MAX1725EUT33+T, the TLE4299GV33XUMA1 uniquely combines AEC-Q100 Grade 0 qualification, adjustable reset/sense thresholds, and 1 V minimum operating input - making it the only choice for safety-critical, thermally demanding automotive domains requiring full voltage supervision.

Availability

TLE4299GV33XUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and transmission control units requiring stable component supply under extended temperature and high-reliability automotive conditions.

Supply support for TLE4299GV33XUMA1 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 TLE4299 belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, supervised power delivery to microcontrollers and sensors in engine, chassis, and body electronics.

FAQ

What is the minimum input voltage required for the TLE4299GV33XUMA1 to maintain regulation?

The device regulates down to V_IN = 4.4 V at full 150 mA load. Below this, output voltage drops linearly with input. However, reset functionality remains active down to V_IN = 1 V - meaning RO can still assert low even when regulation is lost, supporting fail-safe diagnostics.

Can the SI pin be used to monitor voltages other than battery voltage?

Yes. The SI pin accepts any DC voltage between –0.3 V and 45 V. By selecting appropriate RSI1/RSI2 resistor values, users can scale and monitor auxiliary rails (e.g., 5 V sensor supply, 12 V lighting bus) for early warning, independent of the 3.3 V output rail.

Is an external capacitor required on the D pin, and what happens if it is omitted?

Yes - an external capacitor (typically 10–1000 nF) between D and GND sets reset delay time. If omitted, the reset function becomes instantaneous: RO asserts low immediately upon V_Q falling below threshold, with no immunity to short transients or noise spikes.

Does the TLE4299GV33XUMA1 include built-in reverse polarity protection, and how is it implemented?

Yes. The device incorporates internal protection that withstands –40 V applied to the I pin without damage or latch-up. This is achieved through integrated substrate diodes and guard ring structures - eliminating the need for an external series blocking diode in battery-connected applications.