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Product details

Parameters

Number of channels (#) 1 Vin (Min) (V) 1.2 Vin (Max) (V) 8 Imax (A) 3 Ron (Typ) (mOhm) 32 Shutdown current (ISD) (Typ) (uA) 0.03 Quiescent current (Iq) (Typ) (uA) 0.03 Soft start Adjustable Rise Time Rise time (Typ) (us) 0.253 Features Operating temperature range (C) -40 to 85 open-in-new Find other Load switches

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Load switches

Features

  • Low ON-Resistance, High-Current PFET
    • RDS(on) = 32 mΩ at VGS = –4.5 V
    • RDS(on) = 44 mΩ at VGS = –3 V
    • RDS(on) = 82 mΩ at VGS = –1.8 V
    • RDS(on) = 93 mΩ at VGS = –1.5 V
    • RDS(on) = 155 mΩ at VGS = –1.2 V
  • Adjustable Turnon and Turnoff Slew Rate Control
    Through External R1, R2, and C1
  • Supports a Wide Range of 1.2-V to 8-V Supply
    Inputs
  • Integrated NMOS for PFET Control
  • NMOS ON/OFF Supports a Wide Range of 1-V to
    8-V Control Logic Interface
  • Full ESD Protection (All Pins)
    • HBM 2 kV, CDM 500 V
  • Ultra-Low Leakage Current in Standby (Typical
    100 nA)
  • Available in Tiny 6-Pin Package
    • 2.9 mm × 2.8 mm × 0.75 mm SOT (DDC)
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Description

The TPS27081A device is a high-side load switch that integrates a Power PFET and a Control NFET in a tiny package.

The TPS27081A features industry-standard ESD protection on all pins providing better ESD compatibility with other onboard components.

The TPS27081A level shifts ON/OFF logic signal to VIN levels and supports as low as 1-V CPU or MCU logic to control higher voltage power supplies without requiring an external level-shifter.

Switching a large value output capacitor CL through a fast ON/OFF logic signal may result in an excessive inrush current. To control the load inrush current, connect a resistor R2 and add an external capacitor C1 as shown in the Simplified Schematic. To configure the TPS27081A to achieve a specific slew rate, refer to the Application and Implementation section.

A single pullup resistor R1 is required in standby power switch applications. In such applications connect the R2 pin of the TPS27081A to the system ground when inrush current control is not required.

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Technical documentation

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Type Title Date
* Datasheet TPS27081A 1.2-V to 8-V, 3-A PFET High-Side Load Switch With Level Shift and Adjustable Slew Rate Control datasheet (Rev. E) Jun. 30, 2015
More literature 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application notes Load Switch Thermal Considerations (Rev. A) Oct. 11, 2018
Application notes Basics of Load Switches (Rev. A) Sep. 05, 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 notes Selecting a Load Switch to Replace a Discrete Solution Apr. 30, 2017
Application notes 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 notes Managing Inrush Current (Rev. A) May 28, 2015

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SLVMBC9A.TSC (145 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMBD0A.ZIP (16 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMBG5A.ZIP (81 KB) - PSpice Model

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CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

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