UNISONIC TECHNOLOGIES CO., LTD

US107

Preliminary

LINEAR INTEGRATED CIRCUIT

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Copyright © 2018 Unisonic Technologies Co., Ltd

QW-R129-004.d

POWER DISTRIBUTION

SWITCH

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DESCRIPTION

The UTC US107 is a power distribution switch. It 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 between

1.2 A, 1.7A and 2.5 A.

open-drain output report over-current or over-temperature event

which has typical 9ms deglitch timeout period, also reports output

reverse-voltage condition with typical 5ms deglitch timeout period.

The UTC US107 incorporates protection circuits including current

limiting circuit with foldback function, thermal shutdown circuit

designed to prevent catastrophic switch failure due to increasing

power dissipation when continuous heavy loads or short circuit

occurs. Besides, 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 US107 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, battery-charger

circuits.

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FEATURES

* Single power switch family

* Operating range: 3.0V~5.5V

* 130µA quiescent supply current

* 1µA maximum shutdown supply current

* 70mΩ high-side MOSFET

* 1mS typical rise time

* Under voltage lockout

* Logic level enable pin, available with Active-high or

active-low version

* No reverse current when power off

* Available with or without output shutdown pull-low

resister

* Deglitched open-drain over-current flag output ( OC )

* Output reverse-voltage protection

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ORDERING INFORMATION

Ordering Number

Pin Assignment

Lead Free

Halogen Free

Package

1234

5

Packing

US107xxL-AF5-R

US107xxG-AF5-R

SOT-25

O

G

OC

C

I

Tape Reel

Note: Pin Assignment: O: OUT G: GND OC: OC

C: CE/ CE

I: IN