RT9706 Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – 80mΩ, 500mA High-Side Power Switch with Flag

RT9706
80mΩ, 500mA High-Side Power Switch with Flag
General Description
The RT9706 is a cost-effective, low voltage, single
N-Channel MOSFET high-side power switch, optimized
for self-powered and bus-powered Universal Serial Bus
(USB) applications. The RT9706 equipped with a charge
pump circuitry to drive the internal MOSFET switch; the
switch's low R_DS(ON) 80mΩ, meets USB voltage drop
requirements; and a flag output is available to indicate
fault conditions to the local USB controller.
Additional features include soft-start to limit inrush current
during plug-in, thermal shutdown to prevent catastrophic
switch failure from high-current loads, under-voltage
lockout (UVLO) to ensure that the device remains off
unless there is a valid input voltage present, lower
quiescent current as 25μA making this device ideal for
portable battery operated equipment.
The RT9706 is available in SOT-23-5 package requiring
minimum board space and smallest components.
Ordering Information
RT9706
Package Type
B : SOT-23-5
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
RichTek Pb-free and Gree 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.
`100% matte tin (Sn) plating.
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Features
z Compliant to USB Specifications
z Built-In (Typically 80mΩ) N-Channel MOSFET
z Output Can Be Forced Higher than Input (Off-State)
z Low Supply Current :
`25μA Typical at Switch On State
`0.1μA Typical at Switch Off State
z Guaranteed 500mA Continuous Load Current
z Wide Input Voltage Ranges : 2V to 5.5V
z Open-Drain Fault Flag Output
z Hot Plug-In Application (Soft-Start)
z 1.7V Typical Under-Voltage Lockout (UVLO)
z Current Limiting Protection
z Thermal Shutdown Protection
z Reverse Current Flow Blocking (no body diode)
z Smallest SOT-23-5 Package Minimizes Board Space
z UL Approved−E219878
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z USB Bus/Self Powered Hubs
z USB Peripherals
z ACPI Power Distribution
z PC Card Hot Swap
z Notebook, Motherboard PCs
z Battery-Powered Equipment
z Hot-Plug Power Supplies
z Battery-Charger Circuits
Pin Configurations
(TOP VIEW)
EN 1 5 VOUT
GND 2
FLG 3 4 VIN
SOT-23-5
DS9706-02 March 2007
www.richtek.com
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