TPS22991中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Integrated single channel load switch

? Input voltage range: 1V to 5.5V

? 3A maximum continuous switch current

? 25mΩ typical ON-resistance

? Low quiescent current:

– IQ at 3.3V VIN = 6μA (typ)

? Low shutdown current:

– ISD at 3.3V VIN = 14nA (typ)

? Controlled slew rate:

– Version B, BN: rise time (tR) at 3.3V VIN =

141μs

– Version C, CN: rise time (tR) at 3.3V VIN =

845μs

? Quick output discharge (QOD) of 150Ω

? Thermal shutdown protection

? 0.85 × 0.75mm, 0.4mm pitch UQFN(1) package

1. For the pre-production units, package will be in

WQFN package. WQFN package has the same

footprint as UQFN package, but the height will

be 0.75mm compared to 0.6mm with UQFN

package. The final production units will be in

UQFN package. Please contact TI for additional

information.

2 Applications

? PC and notebooks

? Wearables

? Solid state drive (SSD)

? Industrial PC

3 Description

The TPS22991 is a small, low RON, single channel

load switch with controlled slew rate. The device

contains an N-channel MOSFET that can operate

over an input voltage range of 1.0V to 5.5V and can

support a maximum continuous current of 3A. The

switch is controlled by an on and off input, which is

capable of interfacing directly with low-voltage control

signals.

The small size and low RON makes the device ideal

for being used in space constrained, battery powered

applications. The wide input voltage range of the

switch makes it a versatile solution for many different

voltage rails. The controlled rise time of the device

greatly reduces inrush current caused by large bulk

load capacitances, thereby reducing or eliminating

power supply droop. The TPS22991 further reduces

the total solution size by integrating a 150Ω pulldown

resistor for quick output discharge (QOD) when the

switch is turned off.

The TPS22991 is available in a small, space saving

0.85mm × 0.75mm, 0.4mm pitch, 4-pin UQFN

package. The device is characterized for operation

over the free-air temperature range of –55°C to

+125°C.