TPS22991IB中文资料德州仪器数据手册PDF规格书

1 Features

• Integrated single channel load switch

• Input voltage range: 1V to 5.5V

• Maximum continuous switch current: 2.7A

• Typical ON-resistance: 28mΩ

• Low quiescent current:

– IQ at 3.3V VIN = 6μA (typical)

• Ultra-low shutdown current:

– ISD at 3.3V VIN = 200nA (maximum)

• Controlled slew rate:

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

141μs

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

662μs

• Quick output discharge (QOD): 150Ω

• Thermal shutdown protection

• UQFN package: 0.85 × 0.75mm, 0.4mm pitch

2 Applications

• PC and notebooks

• Wearables

• Solid state drive (SSD)

• Industrial PC

3 Description

The TPS22991I is a small, low RON, single channel

load switch with controlled slew rate. The device

contains an N-channel MOSFET that operates over

an input voltage range of 1.0V to 5.5V and supports

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.

For space constrained, battery powered applications,

the device is suitable due to its small size and low

RON. The wide input voltage range of the switch

applies to 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

TPS22991I further reduces the total solution size by

integrating a 150Ω pulldown resistor for quick output

discharge (QOD) when the switch is turned off.

The TPS22991I 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.