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PDF US202 Data sheet ( Hoja de datos )
| Número de pieza | US202 | |
| Descripción | POWER DISTRIBUTION SWITCHES | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de US202 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
US202
Preliminary
100mΩ POWER DISTRIBUTION
SWITCHES
DESCRIPTION
The US202 is a power distribution switch. It is particularly suitable
for self-powered and bus-powered USB (Universal Series bus)
applications. It has 23μA low quiescent supply current that meets the
requirements of battery-powered portable equipments.
A built-in charge pump is used to drive the N-channel N-MOSFET
that is free of parasitic body diode to eliminate any reversed current
flow across the switch when it is powered off.
The US202 incorporates some protection circuits such as current
limit and short protection circuits, soft start circuit, thermal shutdown
and UVLO (Under-voltage Lockout) protection circuits. The thermal
shutdown circuits protect this device from damage when over current
occurs, and the soft start circuits are used to prevent inrush current
when plug-in event occurs.
The US202 can be used in such applications such as
battery-powered equipments, motherboard USB power switchs, USB
device power switchs, hot-plug power supplies, battery-charger
circuits and so on.
FEATURES
* Input Voltage Varies From 2.2V to 6V
* Guaranteed Continuous Current: 1.1A
* High-Side NMOSFET: 100mΩ (TYP)
* Soft Start
* Current Limit:1.5A
* Thermal Protection
* Low Supply Current: 23μA
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
US202XL-AF5-R
US202XG-AF5-R
Package
SOT-25
CMOS IC
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R502-445.b
1 page  
US202
TEST CIRCUIT
Preliminary
CMOS IC
VIN VIN
VCE CE
CIN +
1µF
On
Off
VOUT
GND
VOUT
IOUT
VOUT
CL +
1µF
RL IL
Test Circuit 2
Test Circuit 1 is performed by charging an external tank of bulk capacitor to the input then applying this voltage to
the input of the unit.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R502-445.b
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet US202.PDF ] | |
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