Infineon Technologies TLE4295GV33HTSA1

Overview

TLE4295GV33HTSA1 from Infineon is a monolithic low-dropout linear voltage regulator in PG-SCT595-5 package, delivering 3.3 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) signaling, reverse polarity protection, and thermal shutdown-designed specifically for microcontroller supply in harsh automotive environments.

For engineers reviewing the TLE4295GV33HTSA1 datasheet, TLE4295GV33HTSA1 pinout, TLE4295GV33HTSA1 application, or TLE4295GV33HTSA1 equivalent, key selection criteria include its AEC-Q100 qualification, 45 V max input, -40°C to +150°C junction temperature range, integrated short-circuit and overtemperature protection, and mandatory 2.2 µF/ESR ≤5 Ω tantalum output capacitor.

Technical Context

The TLE4295GV33HTSA1 integrates bandgap reference, control amplifier, pass transistor, and protection circuitry-including saturation detection for power fail assertion and thermal foldback. Its architecture enables stable regulation under wide input transients (up to 45 V) while maintaining tight output tolerance across load (1–30 mA) and temperature (-40°C to +150°C).

Power fail output (PF) is an open-collector signal pulled low during undervoltage, overload, or pass transistor saturation-enabling system-level brownout detection without external components. Reverse polarity protection operates down to -42 V input, and quiescent current drops to 120 µA at light load (IQ < 1 mA), supporting always-on automotive subsystems.

Key Specifications

Pinout & Package

Package: PG-SCT595-5 - ultra-compact 5-pin SMD package (2.9 mm × 1.6 mm × 0.8 mm), optimized for high-density automotive PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PDBVR and TPS7B6733QPWPRQ1, the TLE4295GV33HTSA1 uniquely combines AEC-Q100 Grade 0 qualification, integrated PF signaling, and reverse polarity robustness in a 5-pin package-making it irreplaceable for cost-sensitive, space-constrained automotive modules requiring built-in diagnostics and extreme environmental resilience.

Availability

TLE4295GV33HTSA1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, rear camera systems, and ADAS sensor interfaces requiring stable component supply across extended automotive lifecycles.

Supply support for TLE4295GV33HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and qualification infrastructure.

The OPTIREG™ linear product line delivers AEC-Q100-qualified voltage regulators engineered for functional safety-critical automotive subsystems-emphasizing fault resilience, thermal robustness, and integration of diagnostic features like power fail signaling.

FAQ

What is the minimum input voltage required for regulation?

The TLE4295GV33HTSA1 requires VI ≥ VQ,nom + 0.5 V = 3.8 V for stable 3.3 V regulation per datasheet Section 3.2.1. Below this threshold, the PF pin asserts low and output voltage collapses linearly with input. This ensures predictable brownout behavior during battery sag.

Can ceramic capacitors replace the recommended tantalum output capacitor?

No-ceramic capacitors with ESR < 1 Ω cause phase margin degradation and potential oscillation due to the internal compensation design. The datasheet mandates ≥2.2 µF tantalum (ESR ≤5 Ω) or polymer aluminum for stability. Using ceramics risks output ripple amplification and thermal runaway under load transients.

How does the power fail (PF) output behave during thermal shutdown?

During thermal shutdown, the PF pin remains asserted low until junction temperature falls below the hysteresis threshold (~140°C). This provides continuous fault indication during overheating events, enabling MCU firmware to log thermal faults or disable downstream loads before recovery.

Is the GND pin 2 electrically identical to GND pin 5?

Yes-pins 2 and 5 are internally shorted within the die and share the same ground net. Their dual placement improves thermal conduction to the PCB and reduces ground loop inductance, especially critical for noise-sensitive analog sections powered by the same regulator.