Product details

FET Internal Ron (Typ) (mOhm) 42 Vin (Min) (V) 2.7 Vin (Max) (V) 18 Vabsmax_cont (V) 20 Current limit (Min) (A) 0.6 Current limit (Max) (A) 5.2 Overcurrent response Current limiting Fault response Latch Off UL recognition UL2367, UL60950
FET Internal Ron (Typ) (mOhm) 42 Vin (Min) (V) 2.7 Vin (Max) (V) 18 Vabsmax_cont (V) 20 Current limit (Min) (A) 0.6 Current limit (Max) (A) 5.2 Overcurrent response Current limiting Fault response Latch Off UL recognition UL2367, UL60950
WQFN (RVC) 20 12 mm² 3 x 4
  • 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
  • 42-mΩ RON (Typical)
  • 0.6 A to 5.3 A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • 200-µA Operating IQ (Typical)
  • 15-µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Thresholds
  • Reverse Current Blocking
  • 1-µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • Two Overcurrent Fault Response Options
    • TPS25942: I(LIMIT) with Thermal Shutdown
    • TPS25944: 4 ms Fault Timer then Shutoff
  • –40°C to +125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A Maximum)
  • UL60950 Safe during Single Point Failure
    • Open-Short ILIM detection
  • 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
  • 42-mΩ RON (Typical)
  • 0.6 A to 5.3 A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • 200-µA Operating IQ (Typical)
  • 15-µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Thresholds
  • Reverse Current Blocking
  • 1-µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • Two Overcurrent Fault Response Options
    • TPS25942: I(LIMIT) with Thermal Shutdown
    • TPS25944: 4 ms Fault Timer then Shutoff
  • –40°C to +125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A Maximum)
  • UL60950 Safe during Single Point Failure
    • Open-Short ILIM detection

The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.

Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.

The TPS25942, TPS25944 monitor V(IN) and V(OUT) to provide true reverse blocking from output when V(IN) < (V(OUT) – 10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.

The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.

Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.

The TPS25942, TPS25944 monitor V(IN) and V(OUT) to provide true reverse blocking from output when V(IN) < (V(OUT) – 10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.

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Technical documentation

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Type Title Date
* Data sheet TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multiple Protection Modes datasheet (Rev. D) 01 Nov 2017
Certificate TPS2594x UL Certificate of Compliance UL 2367 10 Apr 2020
Application note eFuse: Safety Certification and why it Matters 18 Mar 2020
Application note Basics of eFuses (Rev. A) 05 Apr 2018
Technical article eFuses: clamping and cutoff and auto retry, oh my! – part 3/3 02 Jun 2016
User guide TPS25942x635EVM: Evaluation Module For TPS25942x User's Guide 27 May 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS25942EVM-635 — TPS25942EVM-635 Evaluation Module for TPS25942x

The TPS25942XEVM-635 is an eFuse (Current Limiter with ENBLKb) that operates from 2.7V to 18V, and have integrated back-to-back FETs with programmable under-voltage, over-voltage, reverse-voltage, over-current and in-rush current protection. It also includes analog current monitoring in a small (...)

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Simulation model

TPS25942L Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAA4C.ZIP (86 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Calculation tool

TPS2594x Design Calculation Tool

SLVC571.ZIP (190 KB)
Package Pins Download
WQFN (RVC) 20 View options

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