Home Power management Load switches
Home
Power management
Load switches

TPS27081A

ACTIVE

8-V, 3-A, 44-mΩ load switch with adj. rise time

Order now
Data sheet

TPS27081A

ACTIVE
Data sheet Order now

Product details

Product type Load switches Current limit type None Vin (max) (V) 8 Vin (min) (V) 1.2 Imax (A) 3 Rating Catalog Features Inrush current control Number of channels 1 Quiescent current (Iq) (typ) (µA) 0.03 Shutdown current (ISD) (typ) (µA) 0.03 Soft start Adjustable Rise Time Ron (typ) (mΩ) 32 Operating temperature range (°C) -40 to 85
Product type Load switches Current limit type None Vin (max) (V) 8 Vin (min) (V) 1.2 Imax (A) 3 Rating Catalog Features Inrush current control Number of channels 1 Quiescent current (Iq) (typ) (µA) 0.03 Shutdown current (ISD) (typ) (µA) 0.03 Soft start Adjustable Rise Time Ron (typ) (mΩ) 32 Operating temperature range (°C) -40 to 85
SOT-23-THN (DDC) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • 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)
  • 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)

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.

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.
filter Find other Load switches
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device.
TPS22975 ACTIVE 5.7-V, 6-A, 16-mΩ load switch with adj. rise time, optional output discharge, and thermal shutdown This product is A 5.5V, 6A, 16mohm load switch with adjustable rise time.
TPS22810 ACTIVE 18-V, 3-A, 79-mΩ load switch with adj. rise time and adj. output discharge This product is A 18V, 3A, 79mohm load switch with adjustable rise time.
TPS22918 ACTIVE 5.5-V, 2-A, 52-mΩ load switch with adj. rise time and adj. output discharge This product is A 5.5V, 2A, 52mohm load switch with adjustable rise time.

Technical documentation

No results found. Please clear your search and try again.
View all 7
Top documentation Type Title Format options Date
* Data sheet 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) PDF | HTML Jun 30, 2015
E-book 11 Ways to Protect Your Power Path Jul 3, 2019
Application note Load Switch Thermal Considerations (Rev. A) Oct 11, 2018
Application note Basics of Load Switches (Rev. A) Sep 5, 2018
Application note Selecting a Load Switch to Replace a Discrete Solution Apr 30, 2017
Application note Timing of Load Switches Apr 27, 2017
Application note 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.

Simulation model

TPS27081A TINA-TI Reference Design (Rev. A)

SLVMBC9A.TSC (145 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

TPS27081A TINA-TI Transient Spice Model (Rev. A)

SLVMBD0A.ZIP (16 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TPS27081A Unencrypted PSpice Transient Model Package (Rev. A)

SLVMBG5A.ZIP (81 KB) - PSpice model
Supported products & hardware
Reference design

TIDA-00670 — Low-Cost, Flexible Voltage Supervisor and Battery Tester Reference Design

This is a low-cost, flexible voltage supervisor that uses a voltage reference in order to test the voltage of a battery. This solution can also be used as a voltage rail monitor for many applications that require accurate power delivery with multiple rails. With TI's ultra-low power voltage (...)

Supported products & hardware
Reference design

TIDA-010011 — High efficiency power supply architecture reference design for protection relay processor module

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Supported products & hardware
Reference design

TIDA-01358 — 24-V AC Power Stage With Wide Vin Converter and Battery Backup Reference Design for Smart Thermostat

The TIDA-01358 reference design provides a low BOM cost, high efficiency power stage solution for smart thermostats and other gateway building automation end equipment. This power stage takes a 24Vac input and produces a 5V and 3.3V output rail which can power additional point-of-load converters (...)
Supported products & hardware
Reference design

TIDA-01395 — 24-V AC Power Stage With Wide Vin Converter and Battery Gauge Reference Design for Smart Thermostat

This reference design provides a low BOM count, high-efficiency power stage for smart thermostats and other gateway building automation designs. This power stage takes a 24-V AC input and produces a 5-V and 3.3-V output rail, which can power additional point-of-load converters if added. The (...)
Supported products & hardware
Reference design

TIDA-01519 — Fire & Carbon Monoxide Alarm Detector Reference Design with Low BOM Cost & Integrated Battery Backup

This reference design is a carbon monoxide (CO) and fire alarm detector reference design which can identify typical alarm sounds, and has the wireless capabilities to alert the user if one is detected. This design is intended for home automation and "smart" environmental sensing. Once a 3kHz or (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOT-23-THN (DDC) 6 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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

View all forum topics

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