TPS27081ADDCR集成电路（IC）的配电开关负载驱动器规格书PDF中文资料

1 Features

1• Low ON-Resistance, High-Current PFET

– R DS(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)

2 Applications

• High-Side Load Switches

• Inrush Current Control

• Power Sequencing and Control

• Standby Power Isolation

• Portable Power Switches

3 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.