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Product details

Parameters

Number of channels (#) 1 Vin (Min) (V) 1.62 Vin (Max) (V) 5.5 Imax (A) 0.2 Ron (Typ) (mOhm) 500 Shutdown current (ISD) (Typ) (uA) 1 Quiescent current (Iq) (Typ) (uA) 40 Soft start Fixed Rise Time Rise time (Typ) (us) 10 Features Inrush current control, Thermal shutdown Operating temperature range (C) -40 to 85 open-in-new Find other Load switches

Package | Pins | Size

SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Load switches

Features

  • Input Voltage Range: 1.62 V to 5.5 V
  • Low ON resistance
    • rON = 0.4 Ω at VIN = 5.5 V
    • rON = 0.5 Ω at VIN = 3.3 V
    • rON = 0.6 Ω at VIN = 2.5 V
    • rON = 0.8 Ω at VIN = 1.8 V
  • Minimum Current Limit: 40 mA or 100 mA
  • Undervoltage Lockout (UVLO)
  • Thermal Shutdown
  • Shutdown Current < 1 µA
  • Fast Current Limit Response Time
  • Fault Blanking
  • Auto Restart
  • 1.8-V Compatible Control Input Thresholds
  • ESD Performance Tested Per JESD 22
    • 4000-V Human-Body Model
      (A114-B, Class II)
    • 1000-V Charged-Device Model (C101)
  • Tiny SC-70 (DCK) Package
  • UL Recognized Component (UL File 169910)
  • Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
    Test Program 2 with CB Report
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Description

The TPS22941/2/3/4/5 load switches provide protection to systems and loads in high-current conditions. The devices contain a 0.4-Ω current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22941/2/3/4/5 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

These devices provide an integrated, robust solution to provide current limiting the output current to a safe level by switching into a constant-current mode when the ouptut load exceeds the current-limit threshold. The OC logic output asserts low during overcurrent, undervoltage, or overtemperature conditions. These additional features make the TPS22941/2/3/4/5 an ideal solution for applications where current limiting is necessary.

This family of devices are available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 13
Type Title Date
* Datasheet TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature datasheet (Rev. D) Jul. 10, 2014
E-book 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application note Load Switch Thermal Considerations (Rev. A) Oct. 11, 2018
Application note Basics of Load Switches (Rev. A) Sep. 05, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Application note Selecting a Load Switch to Replace a Discrete Solution Apr. 30, 2017
Application note Timing of Load Switches Apr. 27, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016
Application note Managing Inrush Current (Rev. A) May 28, 2015
User guide Using the TPS22945EVM-082 Single Channel Current Limited Load Switch IC Sep. 02, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
TPS22945 Evaluation Module
TPS22945EVM-082
25
Description

The TPS22945EVM-082 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22945 load switch. The VIN and VOUT connections to the device and the PCB layout routing provide a low resistance pathway into and out of the device under test. Test point connections allow the (...)

Features
  • Input voltage range: 1.62 V to 5.5 V
  • Access to the VIN, VOUT, GND, ON and OC pins
  • On board CIN and COUT capacitors
  • VIN and VOUT sense pins to measure the voltage drop from VIN to VOUT and calculate the resistance

Design tools & simulation

SIMULATION MODEL Download
SLVMAG8B.ZIP (59 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Ultra-low Stand-by Power, High-efficiency, DC-DC Power Supply Reference Design for Set-top Box
PMP21065 The PMP21065 Reference design operates off a typical 12V DC input to produce several common rails seen in set top boxes today. The key objectives of the design are to be low-cost, small in size and low stand-by power with high efficiency to help customers meet compliance to new regulatory guidelines (...)
document-generic Schematic
REFERENCE DESIGNS Download
Power Switching Reference Design for Set Top Box
TIDA-01451 The TIDA-01451 reference design’s functionality emulates the power distribution of Set Top Boxes. By using integrated load switches to control power rails, each rail can be turned on or off depending on the needs and wants of the user. Turning off rails that are not being used reduces power (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 5 View options

Ordering & quality

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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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

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