TPS2069DDBVRG4中文资料德州仪器数据手册PDF规格书

1 Features

1• Single Power Switch Family

• Rated currents of 1.5 A

• ±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

• UL Listed and CB-File No. E169910

2 Applications

• USB Ports/Hubs, Laptops, Desktops

• High-Definition Digital TVs

• Set Top Boxes

• Short Circuit Protection

3 Description

The TPS2069D power-distribution switch family is

intended for applications such as USB where heavy

capacitive loads and short circuits are likely to be

encountered. The device can continuously deliver up

to 1.5 A output current.

The TPS2069D 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 main 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.