Infineon Technologies TLE4294GV50HTSA1

Overview

TLE4294GV50HTSA1 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 with dropout as low as 0.25 V at 20 mA. It features reverse polarity protection, short-circuit and overtemperature shutdown, and operates across -40°C to +150°C junction temperature for automotive microcontroller power supply under harsh conditions.

For engineers reviewing the TLE4294GV50HTSA1 datasheet, TLE4294GV50HTSA1 pinout, TLE4294GV50HTSA1 application, or TLE4294GV50HTSA1 equivalent, key selection criteria include guaranteed 5 V regulation accuracy over 6–40 V input, thermal shutdown behavior, GND-pin thermal coupling, and compatibility with tantalum output capacitors (2.2 µF, ESR ≤8 Ω).

Technical Context

The device integrates band-gap reference, control amplifier, pass transistor, and protection circuitry-including saturation detection for current limiting, thermal foldback via junction-sensing, and reverse-bias blocking diode-within a single silicon die. Its architecture enables stable regulation without external compensation while maintaining low quiescent current (120–200 µA at light load).

Input-to-output differential is actively managed below 0.4 V across full load and temperature range, enabling operation with minimal headroom from battery-supplied rails (e.g., 12 V nominal systems with cold-crank dips to 6 V). Protection functions are non-latching: recovery occurs automatically after fault removal and thermal cooldown.

Key Specifications

Pinout & Package

Package: PG-SCT595-5 - thermally enhanced 5-pin SMD package with exposed thermal pad (pins 2 and 5 both GND, internally connected and designed for heatsink attachment).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and MAX1725EUT+T, the TLE4294GV50HTSA1 uniquely combines AEC-Q100 Grade 0 qualification, integrated reverse-polarity tolerance, and thermal foldback-making it the only option among the three validated for direct replacement in safety-critical engine bay power domains without additional protection components.

Availability

TLE4294GV50HTSA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering logic requiring stable component supply across automotive production lifecycles.

Supply support for TLE4294GV50HTSA1 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 quality certification aligned to ISO/TS 16949.

The OPTIREG™ linear product line delivers robust, AEC-Q100-qualified voltage regulators optimized for automotive subsystems where reliability under voltage transients, temperature extremes, and reverse-battery conditions is mandatory.

FAQ

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

The TLE4294GV50HTSA1 maintains regulation down to 5.25 V input at 20 mA load (0.25 V dropout), and 5.4 V at 30 mA (0.4 V dropout). Below 5.5 V, the inhibit function disables regulation per functional range specification - so minimum operational VI is 5.5 V for guaranteed startup and sustained output.

Can the N.C. pin (Pin 1) be left floating on the PCB?

No. Pin 1 is internally unconnected but must be externally tied to GND on the PCB. This improves mechanical anchoring, reduces parasitic inductance, and minimizes EMI susceptibility - as explicitly required in Infineon's layout guidelines for PG-SCT595-5 packages.

Is an input capacitor mandatory, and what value is recommended?

Yes. A ceramic input capacitor (CI) of ≥100 nF must be placed within 2 mm of pins 3 (I) and 2/5 (GND) to suppress high-frequency transients from the battery line. Larger values (e.g., 1 µF X7R) improve immunity to load-dump spikes but are not required for basic functionality.

Does the device support adjustable output voltage via external feedback resistors?

No. The TLE4294GV50HTSA1 is a fixed 5.0 V output regulator with internal band-gap reference and no feedback pin. Output voltage is trimmed at wafer test and cannot be modified externally - unlike programmable LDOs such as the TLF35584.