US223XXG-AF5-R Datasheet, PDF (1/7 Pages) Unisonic Technologies – Output Can Be Forced Higher Than Input

UNISONIC TECHNOLOGIES CO., LTD
US223
Preliminary
HIGH-SIDE POWER SWITCHES
WITH FLAG
CMOS IC
 DESCRIPTION
The UTC US223 are low voltage cost-effective high-side power
switches with flag function. These devices are particularly suitable for
self-powered and bus-powered USB applications. The build-in
N-MOSFET’s R_DS(ON) which meets the requirements of USB voltage drop
is as low as 80mΩ.
The UTC US223 contains a charge pump circuitry to drive the internal
MOSFET switch and also incorporate such protection circuits: soft-start
circuit protect these devices from being damaged by limiting inrush
current during plug-in; thermal shutdown circuit is used to prevent
catastrophic switch failure from high-current loads. UVLO is used to
ensure that the device remains off unless there is a valid input voltage
present.
A flag output is designed to indicate fault conditions to the local USB
controller. lower quiescent current as 25μA making this device ideal for
portable battery-operated equipment.
The UTC US223 are applied in USB Bus/Self powered hubs, USB
peripherals, NB, PCs, PC card hot swap, battery-powered equipment,
hot-plug power supplies, battery-charger circuits, ACPI power
distribution.
 FEATURES
4
5
3
12
SOT-25
* Input Voltage Varies From 3.5V to 5.5V
* Built-in N-MOSFET
* Output Can Be Forced Higher Than Input (Off-State)
* Typical Low Supply Current:
- Switch On: 25μA (TYP)
- Switch Off: 0.1μA (TYP)
* Open-Drain Fault Flag Output To Indicate Fault
Conditions
 ORDERING INFORMATION
* Protection Circuits:
- Soft-start( Hot plug-in application)
- UVLO 1.7V (TYP.)
- Current Limiting Protection
- Thermal Shutdown Protection
* Reverse Current Flow Blocking (No Body Diode)
Ordering Number
US223XXG-AF5-R
Package
SOT-25
Packing
Tape Reel
US223XXG-AF5-R
(1)Packing Type
(2)Package Type
(3)Current Limit
(4)Green Package
(1) R: Tape Reel
(2) AF5: SOT-25
(3) AH/AL: 3.2A, BH/BL: 2.5A, CH/CL: 1.8A, DH/DL: 1.1A
(4) G: Halogen Free and Lead Free
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