RT9701B
100mΩ Power Distribution Switches
General Description
Features
z 100mΩ Typ. High-Side N-MOSFET
z Guaranteed 1.1A Continuous Current
z 1.5A Current Limit
The RT9701B 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 theN-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.
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 : 3.5V to 6V
z UL Approved - #E219878
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.
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Battery-Powered Equipment
z Motherboard USB Power Switch
z USBDevice Power Switch
z Hot-Plug Power Supplies
z Battery-Charger Circuits
Ordering Information
RT9701B
Package Type
B : SOT-23-5
BL : SOT-23-5 (L-Type)
Pin Configurations
Lead Plating System
(TOP VIEW)
P : Pb Free
G : Green (Halogen Free and Pb Free)
Note :
VOUT
EN
5
4
Richtek products are :
2
3
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
VOUT GND VIN
SOT-23-5
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
VOUT
VIN
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
5
4
2
3
VOUT GND VIN
SOT-23-5 (L-Type)
DS9701B-06 April 2011
www.richtek.com
1