Document No. S13894EJ1V0DS00 (1st edition)

Date Published February 2001 N CP(K)

Printed in Japan

QUAD Pch HIGH-SIDE SWITCH FOR USB

DATA SHEET

MOS INTEGRATED CIRCUIT

µµµµPD16874

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confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for

availability and additional information.

©

2001

DESCRIPTION

The

µPD16874 is a power switch IC with an overcurrent limiter that is used for the power bus of a Universal Serial

Bus (USB). This product has Pch power MOSFET circuits, each of which has a low-on resistance (100 m

Ω TYP.), in

its switching block.

In addition, the IC is also equipped with an overcurrent detector that is essential for a host/hub controller

conforming to the USB Standard, so that the IC can report an overcurrent to the controller. Moreover, a thermal

shutdown circuit and an undervoltage lockout circuit are also provided as the protection circuits of the IC.

This product has four channels of power switches, control input pins, and flag output pins to simultaneously

control four USB ports with a single IC.

FEATURES

•

Four P-ch power MOSFET circuits

•

Overcurrent detector that outputs active-low control signal from detection report pin

•

Overcurrent limiter to prevent system voltage drop

•

Thermal shutdown circuit

•

Undervoltage lockout circuit

•

Each of four circuits can be turned on and off independently of the others by a control pin. (CTL input: active

low)

•

16-pin SOP package

ORDERING INFORMATION

Part Number

Package

µPD16874GS

16-pin SOP (7.62 mm (300))