RT9711 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – 80mΩ, 1.5A High-Side Power Switches with Flag

Preliminary
RT9711
80mΩ, 1.5A High-Side Power Switches with Flag
General Description
The RT9711 is a low voltage, single N-Channel MOSFET
high-side power switch, optimized for self-powered and
bus- powered Universal Serial Bus (USB) applications.
The RT9711 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. The maximum
current is limited to typically 2.5A in dual ports in
accordance with the USB power requirements, lower
quiescent current as 25μA making this device ideal for
portable battery-operated equipment.
The RT9711 is available in SOT-23-5 and SOP-8 packages
requiring minimum board space and smallest components.
Ordering Information
RT9711
Package Type
B : SOT-23-5
S : SOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
RichTek Pb-free and Green 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.
DS9711-04 March 2007
Features
z Compliant to USB Specifications
z Built-In N-Channel MOSFET
`Typical R_DS(ON) : 80mΩ (SOT-23-5), 90mΩ (SOP-8)
z Output Can Be Forced Higher Than Input (Off-State)
z Low Supply Current :
25μA Typical at Switch On State
1μA Typical at Switch Off State
z Guaranteed 1.5A Continuous Load Current
z Wide Input Voltage Ranges : 2.5V 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 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)
FLG 1 5 VOUT
GND 2
EN 3 4 VIN
SOT-23-5
GND
VIN
VIN
EN
8
2
7
3
6
4
5
SOP-8
VOUT
VOUT
VOUT
FLG
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