Infineon Technologies TLE4295GV30HTSA1

Overview

TLE4295GV30HTSA1 from Infineon is a monolithic low-dropout linear voltage regulator in PG-SCT595-5 package, delivering 3.0 V ±4% output at up to 30 mA with dropout voltage as low as 0.25 V at 20 mA. It features power-fail open-collector output, reverse-polarity protection, and thermal shutdown, designed for microcontroller supply in harsh automotive environments.

For engineers reviewing the TLE4295GV30HTSA1 datasheet, TLE4295GV30HTSA1 pinout, TLE4295GV30HTSA1 application, or TLE4295GV30HTSA1 equivalent, key selection criteria include guaranteed 3.0 V regulation under 45 V input, AEC-Q100 qualification, -40°C to +150°C junction operation, integrated short-circuit and overtemperature protection, and mandatory 2.2 µF/ESR ≤5 Ω tantalum output capacitor.

Technical Context

The device implements a bandgap-referenced control loop with saturation detection and thermal foldback, enabling stable regulation across wide input (4.5 V to 45 V) and temperature (-40°C to +150°C) ranges. Its PF pin provides undervoltage indication via open-collector sink, activated when input drops below regulation threshold or output saturates.

Protection logic includes reverse-polarity tolerance up to -42 V, current-limited output (30 mA typ.), and automatic thermal shutdown with hysteresis. The regulator maintains ≤±4% output accuracy over load (1–30 mA), line (VI,min to 36 V), and temperature, with PSRR of 60 dB at 100 Hz.

Key Specifications

Pinout & Package

Package: PG-SCT595-5 - 5-pin ultra-compact surface-mount package (2.9 mm × 1.6 mm × 0.6 mm), optimized for high-density automotive PCBs with exposed thermal pad connected to pin 5 (GND).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-current automotive LDO applications.

Compared with TLV73330PDBVR and MAX1725EUT30+T, TLE4295GV30HTSA1 uniquely combines AEC-Q100 Grade 0 qualification, 45 V input tolerance, reverse-polarity immunity, and integrated PF signaling-making it the sole choice for under-hood microcontroller supply where functional safety and transient resilience are mandatory.

Availability

TLE4295GV30HTSA1 is available at Aetrix Electronics and suitable for body control modules, engine control units, transmission control modules, and ADAS camera ECUs requiring stable component supply across automotive production lifecycles.

Supply support for TLE4295GV30HTSA1 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 R&D and manufacturing infrastructure.

The OPTIREG™ linear family delivers AEC-Q100-qualified LDOs engineered specifically for automotive subsystems demanding high reliability, extended temperature operation, and integrated fault protection under battery-transient conditions.

FAQ

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

The functional input range starts at VQ,nom + 0.5 V = 3.5 V. At 30 mA load and 25°C, regulation is maintained down to 3.25 V due to 0.25 V typical dropout. Below 3.5 V, PF pin asserts low to signal undervoltage condition, but output remains regulated until dropout limit is exceeded.

Can the PF pin drive an LED directly without a current-limiting resistor?

No. The PF pin is an open-collector NPN output rated for ≤500 µA sink current. Driving an LED requires an external pull-up resistor (e.g., 10 kΩ to 3.3 V) and series current-limiting resistor (e.g., 1 kΩ) to keep sink current within specification and avoid damaging the internal transistor.

Is a ceramic capacitor acceptable for the output instead of tantalum?

While ceramic capacitors meet the 2.2 µF value, their ESR can fall below 5 mΩ-too low for stability. The datasheet specifies ESR ≤5 Ω (not ≤5 mΩ), and recommends tantalum for guaranteed phase margin. If using ceramic, add a 1–5 Ω series resistor to emulate required ESR, or select a polymer hybrid capacitor with verified 1–5 Ω ESR.

Does the thermal shutdown feature include automatic recovery after cooling?

Yes. Thermal shutdown activates at ~160°C junction temperature with ~10°C hysteresis. Once junction cools to ~150°C, the regulator automatically resumes normal operation without requiring power cycle or reset signal-enabling self-recovering behavior during intermittent overload conditions.