Product details

Number of channels (#) 1 Vin (Min) (V) 2.8 Vin (Max) (V) 5.3 Imax (A) 0.6 Ron (Typ) (mOhm) 565 Shutdown current (ISD) (Typ) (uA) 1 Quiescent current (Iq) (Typ) (uA) 100 Soft start Fixed Rise Time Rise time (Typ) (us) 41 Current limit type Fixed Features Power good signal, Short circuit protection, Thermal shutdown Rating Catalog Operating temperature range (C) -40 to 85
Number of channels (#) 1 Vin (Min) (V) 2.8 Vin (Max) (V) 5.3 Imax (A) 0.6 Ron (Typ) (mOhm) 565 Shutdown current (ISD) (Typ) (uA) 1 Quiescent current (Iq) (Typ) (uA) 100 Soft start Fixed Rise Time Rise time (Typ) (us) 41 Current limit type Fixed Features Power good signal, Short circuit protection, Thermal shutdown Rating Catalog Operating temperature range (C) -40 to 85
DSBGA (YFP) 6 1 mm² .8 x 1.2
  • 1-Ω P-Channel MOSFET
  • 300-mA Continuous Source Current
  • Thermal and Short-Circuit Protection
  • 600-mA Current Limit
  • Operating Range: VCC = 2.8 V to 5.3 V
  • 41-µs Typical Rise Time
  • 10-µA Maximum Standby Supply Current
  • Ambient Temperature Range: –40°C to +85°C
  • ESD Performance Tested Per JESD 22
    • 4000-V Human-Body Model (HBM)
    • 400-V Machine Model (MM)
    • 1000-V Charged-Device Model (CDM)
  • 1-Ω P-Channel MOSFET
  • 300-mA Continuous Source Current
  • Thermal and Short-Circuit Protection
  • 600-mA Current Limit
  • Operating Range: VCC = 2.8 V to 5.3 V
  • 41-µs Typical Rise Time
  • 10-µA Maximum Standby Supply Current
  • Ambient Temperature Range: –40°C to +85°C
  • ESD Performance Tested Per JESD 22
    • 4000-V Human-Body Model (HBM)
    • 400-V Machine Model (MM)
    • 1000-V Charged-Device Model (CDM)

The TPS22951 smart-load switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 1-Ω P-channel MOSFET power switch for power distribution. The switch is controlled by a logic enable (EN) input and an accessory detect (DET) pin. The switch is active when EN is high and DET is low. The switch is disabled if EN is low or DET is high. A low power state is achieved by driving EN low.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by increasing the on resistance of the power switch. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal-protection circuit shuts off the switch to prevent damage. The device recovers from a thermal shutdown once the device has cooled sufficiently, but the switch remains OFF until EN is toggled. This smart-load switch is designed to set current limit at 600 mA maximum.

The TPS22951 smart-load switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 1-Ω P-channel MOSFET power switch for power distribution. The switch is controlled by a logic enable (EN) input and an accessory detect (DET) pin. The switch is active when EN is high and DET is low. The switch is disabled if EN is low or DET is high. A low power state is achieved by driving EN low.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by increasing the on resistance of the power switch. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal-protection circuit shuts off the switch to prevent damage. The device recovers from a thermal shutdown once the device has cooled sufficiently, but the switch remains OFF until EN is toggled. This smart-load switch is designed to set current limit at 600 mA maximum.

Download

Similar products you might be interested in

open-in-new Compare products
Same functionality with different pin-out to the compared device.
TPS22950 ACTIVE 5.5-V, 2-A, 40-mΩ load switch with adjustable current limit Same functionality with lower on resistance and adjustable current limit.

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 TPS22951 Current-Limited 1-Ω Smart-Load Switch datasheet (Rev. D) PDF | HTML 26 Oct 2016
Technical article How innovative packaging can drive higher power density in load switches 23 Feb 2022
Application note Load Switch Thermal Considerations (Rev. A) 11 Oct 2018
Application note Basics of Load Switches (Rev. A) 05 Sep 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Basics of eFuses (Rev. A) 05 Apr 2018
Technical article How can a load switch extend your device’s battery life? 20 Mar 2018
Technical article How and why you should use load switches for power sequencing 06 Feb 2018
Technical article How to use load switches and eFuses in your set-top box design 23 Nov 2017

Design & development

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

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 (...)
Package Pins Download
DSBGA (YFP) 6 View options

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

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

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