Infineon Technologies TLE4296GV50NTSA1

Overview

TLE4296GV50NTSA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator in PG-SCT595-5 package, delivering 5.0 V ±4% output at up to 30 mA load current with 0.25 V typical dropout at 20 mA. It features inhibit-controlled standby mode (<1 µA quiescent current), reverse-polarity protection, short-circuit and overtemperature shutdown, and operates from 6 V to 45 V input across –40 °C to +150 °C junction temperature - deployed in automotive body control modules for microcontroller power supply.

For engineers reviewing the TLE4296GV50NTSA1 datasheet, TLE4296GV50NTSA1 pinout, TLE4296GV50NTSA1 application, or TLE4296GV50NTSA1 equivalent, key selection criteria include guaranteed 5.0 V regulation under wide-input automotive transients, thermal shutdown behavior at 150 °C, inhibit logic thresholds (V_INH,high ≥ 2.2 V, V_INH,low ≤ 0.4 V), and ESR-compatible output capacitor requirements (2.2 µF, 3–10 Ω).

Technical Context

The TLE4296GV50NTSA1 implements a bandgap-referenced control loop with saturation-based pass transistor drive and integrated thermal foldback. Its inhibit input directly gates the internal bias network, enabling true zero-load standby with sub-1 µA current draw while maintaining full protection functionality during sleep.

Designed for automotive environments, it sustains operation up to 45 V input and survives reverse battery conditions down to –42 V. Protection circuitry includes cycle-by-cycle current limiting, latch-off short-circuit response, and automatic thermal recovery after junction cooldown below 140 °C.

Key Specifications

Pinout & Package

PG-SCT595-5 is a 5-pin thermally enhanced SMD package with exposed pad (pin 5) for improved heat dissipation. Pin 2 and pin 5 are internally connected GND terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and MAX1725EUT50+T, the TLE4296GV50NTSA1 uniquely combines AEC-Q100 qualification, reverse-polarity survival, inhibit-controlled ultra-low standby current, and 150 °C thermal shutdown - making it the sole choice for safety-critical automotive power nodes requiring functional reliability under harsh electrical and thermal stress.

Availability

TLE4296GV50NTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, engine management auxiliary rails, and lighting control systems requiring stable component supply under AEC-Q100-compliant production conditions.

Supply support for TLE4296GV50NTSA1 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 TLE4296 series belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, protected, low-power supply in harsh-temperature and high-transient automotive subsystems.

FAQ

What is the minimum input voltage required for regulation at full 30 mA load?

The TLE4296GV50NTSA1 requires a minimum input voltage of 5.25 V to maintain 5.0 V ±4% regulation at 30 mA load, based on its 0.25 V typical dropout voltage. Below this, output collapses linearly; the device remains functional but exits regulation. This threshold rises slightly at elevated temperatures due to increased dropout.

Can the output capacitor be smaller than 2.2 µF if using a low-ESR ceramic type?

No. The datasheet mandates ≥2.2 µF with ESR between 3 Ω and 10 Ω for stability across temperature and load. Ceramic capacitors typically have ESR < 0.1 Ω and will cause oscillation. A 2.2 µF tantalum or polymer capacitor meeting the ESR spec is required; adding series resistance to ceramic is not validated and risks instability.

Does the inhibit pin require a pull-up or pull-down resistor in normal operation?

No external resistor is required. The INH pin has internal biasing: it draws ≤12 µA at 5 V and ≤2 µA at 0 V. When driven actively high (≥2.2 V) or low (≤0.4 V) by a microcontroller GPIO, no pull-up/down is needed. Floating the pin is unsafe - it may float into undefined state and cause erratic on/off behavior.

Is the exposed pad (pin 5) electrically connected to ground or left floating?

Pin 5 is the exposed thermal pad and is electrically connected to GND internally. It must be soldered to a PCB ground plane for both thermal performance (R_thj-a = 179 K/W) and electrical integrity. Leaving it unconnected degrades thermal resistance by >50% and may compromise EMI performance and short-circuit robustness.