TPS20XXE中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Single power switch family

? Pin-to-pin with existing TI Switch Portfolio

? Rated currents of 1.5 A and 2 A

? Supports 3.3-V and 5-V power rail

? ±20 accurate, fixed, constant current limit

? Fast overcurrent response: 2 μs

? Deglitched fault reporting

? Output discharge

? Reverse current blocking

? Built-in soft start

? Ambient temperature range: –40°C to 85°C

2 Applications

? PC and notebooks

? Gaming

? TV

? Connected peripherals and printers

? Data center and enterprise computing

? Short-circuit protection

3 Description

The TPS20xxE power-distribution switch family is

intended for applications, such as USB, where heavy

capacitive loads and short circuits are likely to be

encountered. This family offers fixed current-limit

thresholds for applications requiring 1.5-A or 2-A

loading, with options between high or low enable

polarization in different packages.

The TPS20xxE family limits the output current to a

safe level by operating in a constant-current mode

when the output load exceeds the current limit

threshold. This provides a predictable fault current

under all conditions. The fast overload response time

eases the burden on the 2.7-V – 5.5-V supply to

provide regulated power when the output is shorted.

The power-switch rise and fall times are controlled to

minimize current surges during turn-on and turn-off.