Texas Instruments TPS259250DRCT

Overview

TPS259250DRCT from Texas Instruments is a 5-V eFuse protection switch with integrated 30-mΩ pass MOSFET, fixed 6.1-V over-voltage clamp, and adjustable current limit (2–5 A ±15%). It provides latched fault response, programmable output slew rate via dV/dT pin, and thermal shutdown - deployed in HDD/SSD power rails and PCIe auxiliary supplies for robust short-circuit and inrush current protection.

For engineers reviewing the TPS259250DRCT datasheet, TPS259250DRCT pinout, TPS259250DRCT application, or TPS259250DRCT equivalent, key selection considerations include its 5-V system compatibility, latched thermal/fault behavior, UVLO threshold of 4.3 V (rising), RILIM-based current programming, and VSON-10 (3 mm × 3 mm) package constraints for high-density board layouts.

Technical Context

The TPS259250DRCT implements a single-channel hot-swap controller with internal charge-pump gate drive, fast-trip comparator (160% of I_OL), and thermal foldback. Its EN/UVLO pin serves dual roles: enable control and UVLO threshold setting via external resistor divider, while dV/dT pin enables precise output ramp control using an external capacitor (1–1000 nF).

It operates within 4.5–5.5 V input range, delivers up to 5 A continuous output current, and clamps over-voltage transients to 6.1 V at the OUT pin without external components. Fault handling is latched - requiring EN/UVLO toggle or power cycle to recover after thermal shutdown or over-current events.

Key Specifications

Pinout & Package

VSON-10 (DRC) package with 3 mm × 3 mm body size and exposed thermal pad (EP) on bottom for enhanced heat dissipation. Pin 1 marked by dot; pins 4–5 and 7–8 are internally connected OUT terminals to reduce trace resistance and improve current sharing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse protection applications.

Compared with TPS259251DRCT and TPS25942ARVCR, the TPS259250DRCT offers deterministic latched fault behavior ideal for safety-critical 5-V domains, while maintaining minimal footprint and lowest bill-of-materials complexity among TI's eFuse portfolio.

Availability

TPS259250DRCT is available at Aetrix Electronics and suitable for HDD/SSD drives, PCIe auxiliary supplies, and set-top box power rails requiring stable component supply, long-term lifecycle support, and UL-recognized protection functionality.

Supply support for TPS259250DRCT 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with decades of expertise in protection and power distribution solutions.

The TPS25925x family was designed specifically for compact, high-reliability 5-V eFuse applications in storage, computing, and consumer electronics - emphasizing integration, safety certification, and ease of use with minimal external components.

FAQ

What is the over-voltage clamp voltage of the TPS259250DRCT?

The TPS259250DRCT features a fixed internal over-voltage clamp of 6.1 V (typical), with a guaranteed range of 5.25 V to 6.75 V across temperature and process variation. This clamp activates automatically when input voltage exceeds the threshold, protecting downstream 5-V loads without requiring external components - a key differentiator from discrete protection schemes.

How does the TPS259250DRCT respond to a thermal shutdown event?

The TPS259250DRCT implements a latched thermal shutdown: when junction temperature exceeds 150°C, the internal MOSFET turns off and remains off until either the EN/UVLO pin is toggled (pulled low then high) or system power is cycled. This behavior prevents uncontrolled restarts during persistent overheating - critical for system-level fault containment in applications like SSDs and PCIe cards.

Can the TPS259250DRCT be used in 12-V systems?

No - the TPS259250DRCT is specified exclusively for 5-V systems, with recommended input range 4.5–5.5 V and a 6.1-V over-voltage clamp. For 12-V applications, TI's TPS259260DRCT (15-V clamp) or TPS25942ARVCR (13.5-V clamp, 4.5–18-V range) are appropriate alternatives; using TPS259250DRCT beyond 5.5 V risks continuous OVP mode and thermal stress.

What is the purpose of the dV/dT pin on the TPS259250DRCT?

The dV/dT pin on the TPS259250DRCT controls output voltage slew rate during power-up by sinking a 220-nA current into an external capacitor to GND. Selecting capacitor values from 1–1000 nF adjusts ramp time from ~0.4 ms (no cap) to ~13 ms (1000 nF), enabling precise inrush current limiting and preventing bus droop or false triggering of downstream UVLO circuits.

Is the TPS259250DRCT UL 2367 certified?

Yes - the TPS259250DRCT is UL 2367 recognized under File No. E339631, confirming its suitability for use in end-equipment requiring safety-certified over-current and over-voltage protection. This certification covers both normal operation and single-point failure conditions (e.g., R_ILIM open/short), supporting faster regulatory approval for final products.