UNISONIC TECHNOLOGIES CO., LTD

US3076-US3376

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2010 Unisonic Technologies Co., Ltd

QW-R502-424.b

DUAL USB HIGH-SIDE POWER

SWITCH

DESCRIPTION

The UTC US3076-US3376 is an integrated dual channel for

USB high-side power switch. It particularly designed for self-powered

and bus-powered Universal Serial Bus (USB) applications.

OC which

is

open-drain

output

report

over-current

or

over-temperature event, has deglitch timeout period typically 9ms.

The UTC US3076-US3376 incorporates some protection

circuits, such as

current limiting circuit with foldback function,

thermal shutdown circuit which is designed to prevent catastrophic

switch failure due to increasing power dissipation when continuous

heavy loads or short circuit occurs. A built-in charge pump is used to

drive the N-channel MOSFET that is free of parasitic body diode to

eliminate any reversed current flow across the switch when it is

powered off.

The UTC US3076-US3376 is applied in high-side power

protection switch, USB power management, USB host and

self-powered bubs, USB bus-powered hubs, hot plug-in power

supplies, and battery-charger circuits.

FEATURES

* Operating on the Range of 2.7V to 5.5V

* Quiescent Supply Current: 65μA

* Available with 4 Versions of Current Limits with Foldback

* Rise Time: 400μS (TYP)

* UVLO (Under Voltage Lockout)

* Shutdown Supply Current: 1μA (MAX)

* Reverse Current is not Generated when in Power Off State

* Deglitched Open-Drain Over-Current Flag Output ( OC )

SOP-8

ORDERING INFORMATION

Ordering Number

Package

Packing

US3076XG-S08-R

SOP-8

Tape Reel

US3176XG-S08-R

SOP-8

Tape Reel

US3276XG-S08-R

SOP-8

Tape Reel

US3376XG-S08-R

SOP-8

Tape Reel