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TPS22971

ACTIVE

3.6-V, 3-A, 6.7-mΩ load switch with adj. rise time, power good, and output discharge

Product details

Number of channels 1 Vin (min) (V) 0.65 Vin (max) (V) 3.6 Imax (A) 3 Ron (typ) (mΩ) 6.7 Shutdown current (ISD) (typ) (µA) 1.1 Quiescent current (Iq) (typ) (µA) 30 Soft start Adjustable Rise Time Current limit type None Features Power good signal, Quick output discharge, Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 85 FET Internal Device type Load switches Function Inrush current control, Power good signal
Number of channels 1 Vin (min) (V) 0.65 Vin (max) (V) 3.6 Imax (A) 3 Ron (typ) (mΩ) 6.7 Shutdown current (ISD) (typ) (µA) 1.1 Quiescent current (Iq) (typ) (µA) 30 Soft start Adjustable Rise Time Current limit type None Features Power good signal, Quick output discharge, Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 85 FET Internal Device type Load switches Function Inrush current control, Power good signal
DSBGA (YZP) 8 2.8125 mm² 2.25 x 1.25
  • Input voltage range (VIN): 0.65 V to 3.6 V
  • On-resistance
    • RDS(on) = 6.7 mΩ (typical) at VIN ≥ 1.8 V
    • RDS(on) = 7.2 mΩ (typical) at VIN = 1.05 V
    • RDS(on) = 8.9 mΩ (typical) at VIN = 0.65 V
  • Maximum continuous switch current (IMAX): 3 A
  • ON state (IQ): 30 µA (typical) at 3.6 VIN
  • OFF state (ISD): 1 µA (typical) at 3.6 VIN
  • Adjustable slew rate through CT pin
    • Fast turn-ON ≤ 65 µs at VIN = 1 V
  • Power good (PG) indicator after switch turn ON
  • Low threshold enable (ON) of 0.9 V (VIH) supports use of low voltage control logic
  • Thermal shutdown (TSD)
  • Quick output discharge (QOD): 150-Ω (typical)
  • Input voltage range (VIN): 0.65 V to 3.6 V
  • On-resistance
    • RDS(on) = 6.7 mΩ (typical) at VIN ≥ 1.8 V
    • RDS(on) = 7.2 mΩ (typical) at VIN = 1.05 V
    • RDS(on) = 8.9 mΩ (typical) at VIN = 0.65 V
  • Maximum continuous switch current (IMAX): 3 A
  • ON state (IQ): 30 µA (typical) at 3.6 VIN
  • OFF state (ISD): 1 µA (typical) at 3.6 VIN
  • Adjustable slew rate through CT pin
    • Fast turn-ON ≤ 65 µs at VIN = 1 V
  • Power good (PG) indicator after switch turn ON
  • Low threshold enable (ON) of 0.9 V (VIH) supports use of low voltage control logic
  • Thermal shutdown (TSD)
  • Quick output discharge (QOD): 150-Ω (typical)

The TPS22971 is a space-saving single-channel load switch with controlled and adjustable turn-on slew rate and an integrated power good indicator. the device contains an n-channel mosfet that can operate over a low input voltage range of 0.65 v to 3.6 V and can support a maximum continuous current of 3 A. A low on-resistance of 6.7-mΩ minimizes the power loss and voltage drop across the load switch. The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.

By default, the TPS22971 has a fast turn-on time to minimize system startup and wait time. The adjustable slew rate can also be reduced to limit inrush current. A power good (PG) signal internally monitors the gate threshold and indicates when the switch is fully on. When the switch is disabled, a 150-Ω on-chip resistor quickly discharges the output to ground and keeps it from floating.

The TPS22971 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to 105°C and integrates thermal shutdown to turn off in case of overheating.

The TPS22971 is a space-saving single-channel load switch with controlled and adjustable turn-on slew rate and an integrated power good indicator. the device contains an n-channel mosfet that can operate over a low input voltage range of 0.65 v to 3.6 V and can support a maximum continuous current of 3 A. A low on-resistance of 6.7-mΩ minimizes the power loss and voltage drop across the load switch. The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.

By default, the TPS22971 has a fast turn-on time to minimize system startup and wait time. The adjustable slew rate can also be reduced to limit inrush current. A power good (PG) signal internally monitors the gate threshold and indicates when the switch is fully on. When the switch is disabled, a 150-Ω on-chip resistor quickly discharges the output to ground and keeps it from floating.

The TPS22971 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to 105°C and integrates thermal shutdown to turn off in case of overheating.

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Technical documentation

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Type Title Date
* Data sheet TPS22971 3.6-V, 3-A, 6.7-mΩ On-Resistance Load Switch with Adjustable Fast Turn-ON and Power Good datasheet (Rev. C) PDF | HTML 17 Feb 2020
Application note Basics of Power Switches (Rev. A) PDF | HTML 26 Apr 2019
Application note Load Switch Thermal Considerations (Rev. A) 11 Oct 2018
Application note Basics of Load Switches (Rev. A) 05 Sep 2018
Application note Selecting a Load Switch to Replace a Discrete Solution 30 Apr 2017
Application note Timing of Load Switches 27 Apr 2017
EVM User's guide TPS22971 Load Switch Evaluation Module User's Guide 12 Apr 2017
Application note Fundamentals of On-Resistance in Load Switches 09 Jun 2016
Application note Quiescent Current vs Shutdown Current for Load Switch Power Consumption 30 Mar 2016
Application note Managing Inrush Current (Rev. A) 28 May 2015

Design & development

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

Evaluation board

TPS22971EVM — TPS22971 3.6V, 3A, 7.5mΩ On-Resistance Load Switch Evaluation Module

The TPS22971 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22971 load switch. The TPS22971EVM allows the user to apply different input voltages (0.65-V to 3.6-V) under different loading conditions (0-A to 3-A) to the TPS22971. Output, input, and switching (...)
User guide: PDF
Not available on TI.com
Simulation model

TPS22971 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMC61A.ZIP (68 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 (...)
Package Pins CAD symbols, footprints & 3D models
DSBGA (YZP) 8 Ultra Librarian

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