Home Power management Power switches eFuses & hot swap controllers
Home
Power management
Power switches
eFuses & hot swap controllers

TPS25944A

ACTIVE

2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking and 4-ms circuit breaker function

Order now
Data sheet

TPS25944A

ACTIVE
Data sheet Order now

Product details

FET Internal Ron (typ) (mΩ) 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 Circuit breaker Fault response Auto-retry Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, Power good signal, Reverse current blocking always UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Reverse current blocking, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
FET Internal Ron (typ) (mΩ) 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 Circuit breaker Fault response Auto-retry Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, Power good signal, Reverse current blocking always UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Reverse current blocking, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
WQFN (RVC) 20 12 mm² 4 x 3
  • 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.

filter Find other eFuses & hot swap controllers
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS25947 ACTIVE 2.7-V to 23-V, 28-mΩ, 5.5-A eFuse with integrated reverse polarity protection Improved performance and pricing in a smaller package
TPS25948 ACTIVE 3.5-V to 23-V, 12.2-mΩ, 8-A eFuse with bi-directional power delivery Higher current and lower RON

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multiple Protection Modes datasheet (Rev. D) PDF | HTML 01 Nov 2017
Certificate TPS25942/44 CB Test Certificate IEC 62368-1 09 Jul 2021
Certificate TPS2594x UL Certificate of Compliance UL 2367 10 Apr 2020
Functional safety information eFuse: Safety Certification and why it Matters 18 Mar 2020
E-book 11 Ways to Protect Your Power Path 03 Jul 2019
Application note Basics of eFuses (Rev. A) 05 Apr 2018
Technical article eFuses: clamping and cutoff and auto retry, oh my! – part 3/3 PDF | HTML 02 Jun 2016
Technical article eFuses: clamping and cutoff and auto retry, oh my! – part 2/3 PDF | HTML 26 May 2016
EVM User's guide TPS25944X635EVM: Evaluation Module for TPS25944X (Rev. A) 06 Jul 2015

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 (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS25944A TINA-TI Reference Design (Rev. A)

SLVMC31A.TSC (630 KB) - TINA-TI Reference Design
Download
Simulation model

TPS25944A TINA-TI Transient Spice Model (Rev. A)

SLVMC30A.ZIP (52 KB) - TINA-TI Spice Model
Download
Simulation model

TPS25944A Unencrypted PSpice Transient Model Package (Rev. D)

SLVMAA5D.ZIP (129 KB) - PSpice Model
Download
Calculation tool

SLVC571 — TPS2594x Design Calculation Tool

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
TPS25940 — 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking and DevSleep support TPS25940-Q1 — 2.7-V to 18-V, 42mΩ, 0.6-5.3A automotive eFuse with current monitor and short to battery protection TPS25942A — 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking, IMON and PG TPS25942L — 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking with latch off fault response TPS25944A — 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking and 4-ms circuit breaker function TPS25944L — 2.7-V to 18-V, 42mΩ, 0.6-5.2A eFuse with reverse current blocking
Download
Calculation tool

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
Supported products & hardware

Supported products & hardware

This design resource supports most products in these categories.

Check the product details page to verify support.
Download
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 (...)
Request
Package Pins CAD symbols, footprints & 3D models
WQFN (RVC) 20 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos