RT9711_11 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – 80mΩ, 1.5A High-Side Power Switches with Flag

RT9711
80mΩ, 1.5A High-Side Power Switches with Flag
General Description
The RT9711 is a low voltage, single N-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
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Note :
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.
DS9711-07 April 2011
Features
z Compliant to USB Specifications
z Built-In N-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)
VOUT
VIN
5
4
2
3
FLG GND EN
SOT-23-5
GND
VIN
VIN
EN
8
2
7
3
6
4
5
SOP-8
VOUT
VOUT
VOUT
FLG
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