RT9701
100mΩ Power Distribution Switches
Ω
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.
Features
100mΩ Typ. High-Side NMOSFET (SOT- 25)
Ω
Guaranteed 1.1A Continuous Current
1.5A Current Limit
Small SOT- 25 Package Minimizes Board Space
Soft Start
Thermal Protection
Low 23µA Supply Current
µ
Wide Input Voltage Range: 2.2V ~ 6V
UL Approved - #E219878
Pin Configurations
Part Number
RT9701CBL
(Plastic SOT-25)
5
Pin Configurations
TOP VIEW
4
Applications
Battery-Powered Equipment
Motherboard USB Power Switch
USB Device Power Switch
Hot-Plug Power Supplies
Battery-Charger Circuits
RT9701CB
(Plastic SOT-25)
1
2
3
1.
2.
3.
4.
5.
VOUT
GND
VIN
VIN
VOUT
TOP VIEW
5
4
1
2
3
Ordering Information
RT9701
Package type
BL : SOT-25
B : SOT-25
Operating temperature range
C: Commercial standard
1.
2.
3.
4.
5.
VOUT
GND
VIN
CE
VOUT
Typical Application Circuit
RT9701 CBL
V
IN
C
IN
1
µF
VIN
VIN
GND
VOUT
VOUT
*C
OUT
470
µF
V
OUT
Marking Information
Part Number
RT9701CBL
RT9701CB
Marking
AH
C0
* 470µF, Low ESR Electrolytic
DS9701-05 October 2001
www.richtek-ic.com.tw
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
