Infineon Technologies IFX25001MEV25HTSA1

Overview

IFX25001MEV25HTSA1 from Infineon Technologies is a fixed-output 2.5 V low-dropout linear voltage regulator in PG-SOT223-4 package, delivering up to 400 mA output current with dropout voltage as low as 1.0 V at 300 mA, wide 4.7–40 V input range, and integrated reverse polarity protection, overtemperature shutdown, and current limiting. It serves as primary power regulation for microcontroller peripherals in industrial control modules.

For engineers reviewing the IFX25001MEV25HTSA1 datasheet, IFX25001MEV25HTSA1 pinout, IFX25001MEV25HTSA1 application, or IFX25001MEV25HTSA1 equivalent, key selection criteria include guaranteed 2.5 V ±4% output accuracy across -40 °C to 125 °C, thermal performance on FR4 PCBs (R_thJA = 51 K/W), minimum 22 µF/≤3 Ω ESR output capacitance, and compatibility with SOT223-4 footprint constraints.

Technical Context

The IFX25001MEV25HTSA1 implements a bandgap-referenced control amplifier driving a pass transistor with saturation control logic, enabling stable regulation under load transients. Protection circuitry includes dedicated temperature sensor feedback to trigger shutdown above 151 °C and current-sense-based foldback limiting.

Its functional range requires input voltage ≥4.7 V for 2.5 V output operation, with specified load regulation of ±70 mV from 5 mA to 300 mA and line regulation of ±25 mV across 12–32 V input variation at light load.

Key Specifications

Pinout & Package

IFX25001MEV25HTSA1 uses the PG-SOT223-4 package: thermally enhanced plastic case with exposed heat slug connected internally to GND, requiring PCB copper pour for effective heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70225DBVR and NCP1117ST25T3G, IFX25001MEV25HTSA1 provides integrated reverse polarity and thermal protection in the same SOT223 footprint while delivering 400 mA at lower dropout, making it optimal for uncontrolled industrial power environments.

Availability

IFX25001MEV25HTSA1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart appliance control boards, HDTV tuner subsystems, and network router management controllers requiring stable component supply across extended product lifecycles.

Supply support for IFX25001MEV25HTSA1 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 electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

The IFX25001 series belongs to Infineon's standard power linear regulator product line, designed specifically for robust, protected DC-DC conversion in harsh industrial and consumer environments where reliability under voltage transients and thermal stress is critical.

FAQ

What is the minimum input voltage required for stable 2.5 V output?

The IFX25001MEV25HTSA1 requires a minimum input voltage of 4.7 V to maintain regulation across its full operating temperature and load range. Below this threshold, output voltage drops linearly with input; the 1.0–2.0 V dropout specification applies only above 4.7 V input.

Can this regulator operate without an output capacitor?

No. A minimum 22 µF output capacitor with ESR ≤3 Ω at 10 kHz is mandatory for loop stability and transient response. Omitting it causes oscillation and potential device failure under load changes, as confirmed in Section 4.2.5–4.2.6 of the datasheet.

How does the overtemperature shutdown behave during sustained overload?

When junction temperature exceeds 151–200 °C, the device shuts down output and remains off until temperature falls below hysteresis threshold (~20 °C below trip point). It does not cycle repeatedly; thermal recovery must occur before regulation resumes.

Is the heat slug electrically isolated in the PG-SOT223-4 package?

No. The heat slug is internally connected to Pin 2 (GND) and must be soldered to a GND copper pour. Electrical isolation would compromise thermal performance and violate the R_thJC = 25 K/W specification measured to the heat slug.