RT9701 Datasheet, PDF (1/12 Pages) Richtek Technology Corporation – 100m POWER DISTRIBUTION SWITCHES

RT9701
100mΩ Power Distribution Switches
General Description
The RT9701 is an integrated 100mΩ power switch
for self-powered and bus-powered Universal Series
Bus (USB) applications. A built-in charge pump is
used to drive the N-channel NMOSFET that is free
of parasitic body diode to eliminate any reversed
current flow across the switch when it is powered
off. Its low quiescent supply current (23µA) and
small package (SOT-25) is particularly suitable in
battery-powered portable equipment.
Several protection functions include soft start to limit
inrush current during plug-in, current limiting at 1.5A
to meet USB power requirement, and thermal
shutdown to protect damage under over current
conditions.
Applications
z Battery-Powered Equipment
z Motherboard USB Power Switch
z USB Device Power Switch
z Hot-Plug Power Supplies
z Battery-Charger Circuits
Ordering Information
RT9701… ……
Package type
BL : SOT-25
B : SOT-25
Operating temperature range
C: Commercial standard
Marking Information
Part Number
Marking
RT9701CBL
AH
RT9701CB
C0
Features
z 100mΩ Typ. High-Side NMOSFET (SOT- 25)
z Guaranteed 1.1A Continuous Current
z 1.5A Current Limit
z Small SOT- 25 Package Minimizes Board Space
z Soft Start
z Thermal Protection
z Low 23µA Supply Current
z Wide Input Voltage Range: 2.2V ~ 6V
z UL Approved - #E219878
Pin Configurations
Part Number
RT9701CBL
(Plastic SOT-25)
Pin Configurations
TOP VIEW
5
4
123
1. VOUT
2. GND
3. VIN
4. VIN
5. VOUT
RT9701CB
(Plastic SOT-25)
5
4
123
TOP VIEW
1. VOUT
2. GND
3. VIN
4. CE
5. VOUT
Typical Application Circuit
V_IN
C_{I N}
1 µF
RT9701 CBL
VIN
VOUT
VIN
VOUT
GND
V_OUT
*C_OUT
470 µF
* 470µF, Low ESR Electrolytic
DS9701-05 October 2001
www.richtek-ic.com.tw
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