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TPS25921L

ACTIVE

4.5-V to 18-V, 90mΩ, 0.4-1.6A eFuse with latch off fault response

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Data sheet

TPS25921L

ACTIVE
Data sheet Order now

Product details

FET Internal Ron (typ) (mΩ) 90 Vin (min) (V) 4.5 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.4 Current limit (max) (A) 1.6 Overcurrent response current limiting Fault response Latch-off Soft start Adjustable Overvoltage response Cut-off Features Fault output UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Overvoltage protection, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
FET Internal Ron (typ) (mΩ) 90 Vin (min) (V) 4.5 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.4 Current limit (max) (A) 1.6 Overcurrent response current limiting Fault response Latch-off Soft start Adjustable Overvoltage response Cut-off Features Fault output UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Overvoltage protection, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 4.5 V – 18 V Operating Voltage, 20 V (Max)
  • 90 mΩ RDS(ON) (Typical)
  • 0.4 A to 1.6 A Adjustable Current Limit
  • ±2% Accurate ILIMIT at 1A at 25°C
  • ±3% Overvoltage, Undervoltage Threshold
  • Programmable dVO/dt Control
  • Fault Output for Thermal Shutdown, UVLO and
    OVP
  • –40°C to 125°C Junction Temperature Range
  • Auto-Retry and Latch-Off Versions
  • UL2367 Recognized - File No. E169910
  • UL60950 - Safe during Single Point Failure Test
  • 4.5 V – 18 V Operating Voltage, 20 V (Max)
  • 90 mΩ RDS(ON) (Typical)
  • 0.4 A to 1.6 A Adjustable Current Limit
  • ±2% Accurate ILIMIT at 1A at 25°C
  • ±3% Overvoltage, Undervoltage Threshold
  • Programmable dVO/dt Control
  • Fault Output for Thermal Shutdown, UVLO and
    OVP
  • –40°C to 125°C Junction Temperature Range
  • Auto-Retry and Latch-Off Versions
  • UL2367 Recognized - File No. E169910
  • UL60950 - Safe during Single Point Failure Test

The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.

Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.

For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.

The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.

Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.

For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.
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Technical documentation

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Type Title Date
* Data sheet TPS25921x 4.5V - 18V eFuse with Precise Current Limit and Over Voltage Protection datasheet (Rev. C) PDF | HTML 11 Nov 2015
Functional safety information eFuse: Safety Certification and why it Matters 18 Mar 2020
Certificate TPS25921x UL Certificate of Compliance IEC 62368-1 17 Jan 2020
Application note Basics of eFuses (Rev. A) 05 Apr 2018
EVM User's guide User Guide for TPS25921EVM-637 04 Aug 2014

Design & development

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Evaluation board

TPS25921EVM-637 — TPS25921EVM-637 4.5-18V eFuse with Precision Current Limit Evaluation Module

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Simulation model

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SLVMAE7B.ZIP (99 KB) - PSpice Model
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Calculation tool

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Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
TPS25921A — 4.5-V to 18-V, 90mΩ, 0.4-1.6A eFuse with auto retry fault response TPS25921L — 4.5-V to 18-V, 90mΩ, 0.4-1.6A eFuse with latch off fault response
Hardware development
Evaluation board
TPS25921EVM-637 — TPS25921EVM-637 4.5-18V eFuse with Precision Current Limit Evaluation Module
Download
Calculation tool

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

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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 (...)
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