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

• USB ports and hubs, laptops, and desktops

• High-definition digital TVs

• Set-top boxes

• 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 multiple devices with

fixed current-limit thresholds for applications from 1.5

A to 2 A.

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 3.3-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 turnon and turnoff.

TPS2069E属于开发板，套件，编程器 > 评估和演示板及套件。美国德州仪器公司制造生产的TPS2069E评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。