UNISONIC TECHNOLOGIES CO., LTD
US107
Preliminary
LINEAR INTEGRATED CIRCUIT
POWER DISTRIBUTION
SWITCH
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.
The RDS(ON) of the MOSFET switch is as low as 70mΩ. OC is
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.
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
* 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
* Under voltage lockout
ORDERING INFORMATION
Ordering Number
Pin Assignment
Package
Packing
Lead Free
Halogen Free
US107xxG-AF5-R
1
2
3
4
5
I
US107xxL-AF5-R
SOT-25
O
G
OC
C
Tape Reel
Note: Pin Assignment: O: OUT G: GND OC:OC
C: CE/CE
I: IN
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