RT9701_11 Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – 100mΩ 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 MOSFET that is free of parasitic
body diode to eliminate any reversed current flow across
the switch when it is powered off. Its low quiescent current
(23uA) and small package (SOT-23-5) 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.
Ordering Information
RT9701
Package Type
B : SOT-23-5
BL : SOT-23-5 (L-Type)
Note :
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
z 100mΩ Typ. High-Side NMOSFET (SOT-23-5)
z Guaranteed 1.1A Continuous Current
z 1.5A Current Limit
z Small SOT-23-5 Package Minimizes Board Space
z Soft Start
z Thermal Protection
z Low 23uA Supply Current
z Wide Input Voltage Range : 2.2V to 6V
z UL Approved - #E219878
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Battery-Powered Equipment
z Motherboard USB Power Switch
z USB Device Power Switch
z Hot-Plug Power Supplies
z Battery-Charger Circuits
Pin Configurations
(TOP VIEW)
VOUT
EN
5
4
2
3
VOUT GND VIN
SOT-23-5
VOUT
VIN
5
4
2
3
VOUT GND VIN
SOT-23-5 (L-Type)
Typical Application Circuit
V_IN
C_IN
1uF
RT9701xBL
VIN
VOUT
VIN
VOUT
GND
V_OUT
* C_OUT
470uF
* 470uF, Low ESR Electrolytic
DS9701-16 April 2011
www.richtek.com
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