UPD16855A中文资料瑞萨数据手册PDF规格书

DESCRIPTION

This product is the power switch IC with over current limit, used for the power supply bus of the Universal-SerialBus (USB).

2 circuit builds in the Pch power MOSFET in the switch part, and this product realizes low on resistance (100 mΩ TYP.) respectively.

And the over current detection, the thermal-shutdown circuit, an under voltage locked-out (UVLO) circuit whose functions are necessary in the Host/HUB-controller of the USB standard are built in.

And the over-current-detect result can be reported to the controller by flag-pin.

This product builds in each two circuits of the power switch, control-pins and flag-pins, and this IC can be able to control the power supply bus in 2 USB port.

There are four kinds of this product by the input logic of the control signal and switch operation in over-current detect.

FEATURES

• Pch power MOSFET, 2 circuit building in

• Over-current detection circuit is built in and its result is outputted from flag-pin (“L” active)

• Prevent from dropping power supply by over current limit circuit

• Thermal shutdown circuit building in

• Under Voltage Locked Out (UVLO) circuit building in

• Switch on/off control is possible by the control-pin.

• 8 pin DIP/SOP package