Infineon Technologies IFX25001TCV50ATMA1

Overview

IFX25001TCV50ATMA1 from Infineon Technologies is a 5.0 V fixed-output low-dropout linear voltage regulator in PG-TO263-3 package, delivering up to 400 mA output current with dropout voltage as low as 250 mV at 250 mA, functional input range of 5.5–40 V, and integrated reverse polarity protection, overtemperature shutdown, and current limiting. It is qualified for industrial applications and used in network routers requiring stable 5 V supply under wide-input, high-temperature conditions.

For engineers reviewing the IFX25001TCV50ATMA1 datasheet, IFX25001TCV50ATMA1 pinout, IFX25001TCV50ATMA1 application, or IFX25001TCV50ATMA1 equivalent, key selection criteria include dropout performance at 400 mA load, thermal resistance (R_thJA = 22 K/W typical on FR4), input voltage margin above 5.5 V, and compatibility with ≥22 µF/≤3 Ω ESR output capacitors.

Technical Context

The IFX25001TCV50ATMA1 implements a bandgap-referenced control amplifier driving a pass transistor with saturation control, enabling precise 5.0 V regulation across -40°C to +125°C junction temperature. Its protection circuitry independently monitors die temperature and output current to trigger shutdown or foldback before damage occurs.

It operates without external compensation, relying on internal stability design validated for 22 µF ceramic or tantalum output capacitance with ≤3 Ω ESR at 10 kHz. The device's functional input range (5.5–40 V) and absolute max rating (45 V) are decoupled-operation above 40 V is not supported despite higher survival limit.

Key Specifications

Pinout & Package

IFX25001TCV50ATMA1 uses PG-TO263-3 (D2PAK) package with exposed heat slug electrically connected to GND. Pin 1 = Input (VI), Pin 2 = GND (internally tied to heat slug), Pin 3 = Output (VQ). Thermal performance depends on PCB copper area connected to the heat slug.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO regulator applications.

Compared with TLE42754G and MCP1703T-5002E/MB, IFX25001TCV50ATMA1 uniquely combines reverse polarity hardening, 400 mA capability, and 125°C operation in TO263 - making it optimal for industrial-grade 5 V point-of-load regulation where reliability trumps minimal BOM count.

Availability

IFX25001TCV50ATMA1 is available at Aetrix Electronics and suitable for industrial network routers, smart home gateways, appliance control boards, and HDTV mainboard subsystems requiring stable component supply with guaranteed long-term manufacturability and RoHS compliance.

Supply support for IFX25001TCV50ATMA1 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 quality certification to ISO/TS 16949 and IECQ QC 080000.

The IFX25001 belongs to Infineon's industrial-grade linear regulator product line, designed specifically for robust 5 V and 3.3 V power delivery in harsh environments including manufacturing automation, network infrastructure, and consumer electronics with extended temperature and reliability demands.

FAQ

What is the minimum input voltage required for regulation at full 400 mA load?

The IFX25001TCV50ATMA1 requires a minimum input voltage of 5.5 V to maintain 5.0 V output regulation across its full 400 mA load range, per functional range specification. At 250 mA, dropout is 250 mV typ., so 5.25 V input sustains regulation - but 5.5 V is the guaranteed lower bound for all loads up to 400 mA.

Can this LDO be used with ceramic output capacitors?

Yes - the IFX25001TCV50ATMA1 is stable with ceramic output capacitors meeting the 22 µF minimum capacitance and ≤3 Ω ESR requirement at 10 kHz. X7R or X5R dielectrics are recommended; avoid low-ESR types below 1 Ω unless validated per application note AN2017-09.

Does the heat slug require electrical isolation from the PCB ground plane?

No - the heat slug is internally connected to Pin 2 (GND) and must be soldered directly to a large GND copper pour. Isolation would impair thermal performance and violate the R_thJA test condition; thermal vias to inner GND layers are recommended for sustained 400 mA operation.

How does overtemperature shutdown behave during continuous overload?

Overtemperature shutdown activates at >151°C junction temperature and holds output off until die cools to ~130°C hysteresis. It is not intended for repetitive cycling - continuous overload will cause thermal lockout until ambient cooling occurs, protecting against permanent damage but requiring system-level fault recovery.