Infineon Technologies TLE4290GATMA1

Overview

TLE4290GATMA1 from Infineon Technologies is a monolithic 5-V low-dropout linear voltage regulator with Power Good monitoring, designed for automotive microcontroller supply. It delivers up to 450 mA output current, maintains ±2% output accuracy (4.9–5.1 V), operates from 5.5 V to 42 V input, and features reverse-polarity and short-circuit protection. Used in engine control units and body electronics where stable 5 V rail and power sequencing are critical.

For engineers reviewing the TLE4290GATMA1 datasheet, TLE4290GATMA1 pinout, TLE4290GATMA1 application, or TLE4290GATMA1 equivalent, key selection criteria include its 250–500 mV dropout at 300 mA, user-configurable Power Good delay (10–22 ms with 47 nF), PG open-collector output with 0.2–0.4 V low-level voltage, and AEC-Q100 qualification for under-hood environments.

Technical Context

The TLE4290GATMA1 integrates bandgap reference, current limiting, thermal shutdown, and Power Good supervision circuitry in a single die. Its PG output remains LOW until V_Q exceeds 4.45–4.80 V (rising threshold) and stays HIGH until V_Q drops below 3.50–3.80 V (falling threshold), with reaction time under 2.0 μs.

Pin D accepts an external capacitor (e.g., 47 nF) to set delay time (10–22 ms); PG is open-collector requiring ≥5 kΩ pull-up to V_Q; GND (Pin 3) is internally connected to heatsink; output stability requires C_Q ≥22 μF with ESR <5 Ω at 10 kHz.

Key Specifications

Pinout & Package

Package: PG-TO263-5-1 (D²PAK), thermally enhanced surface-mount package with exposed heatsink pad (Pin 3 = GND/Heatsink).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5 V automotive LDO applications.

Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the TLE4290GATMA1 uniquely combines reverse-polarity tolerance, user-programmable PG delay, and AEC-Q100 Grade 1 rating-making it the only choice for high-reliability engine bay applications requiring full fault resilience.

Availability

TLE4290GATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and infotainment head units requiring stable component supply across automotive production lifecycles.

Supply support for TLE4290GATMA1 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, and industrial control ICs, with global manufacturing and quality certification to IATF 16949.

The TLE4290 belongs to Infineon's automotive linear regulator product line, engineered specifically for harsh-environment microcontroller power supply with integrated diagnostics and fault resilience.

FAQ

What is the minimum input voltage required for regulation?

The TLE4290GATMA1 requires a minimum input voltage of 5.5 V to maintain regulated 5 V output. Below this, dropout occurs and V_Q tracks VI minus internal losses. This ensures compatibility with automotive batteries during cold-crank conditions where voltage may dip to 6 V.

How is the Power Good delay time calculated?

The Power Good delay time (t_rd) is determined by the capacitor value on Pin D: t_rd ≈ 0.22 × C_D (in nF) ms. With 47 nF, delay is 10–22 ms (typ. 16 ms). The relationship is linear and verified across temperature; no resistor is needed-only the capacitor to GND.

Can the PG pin drive a microcontroller reset directly?

Yes-the PG pin is an open-collector output rated for 5 mA sink current and 25 V max voltage. When pulled up to V_Q (5 V) via ≥5 kΩ resistor, it delivers a clean LOW-to-HIGH transition after delay, compatible with standard MCU reset inputs requiring active-low asynchronous reset.

Is thermal derating required at elevated ambient temperatures?

Yes-output current must be derated above 85°C ambient. At 125°C ambient, maximum continuous output drops to ~250 mA due to junction temperature limit (150°C) and R_thj-a = 53 K/W (TO263). PCB copper area and airflow significantly impact actual derating; use thermal simulation or measurement for final design validation.