General Description
The RT9703 is a low voltage, high performance single N-Channel MOSFET power switch, designed for power rail on/off control with low RDS(ON) dd80mΩ and full protection functions. The RT9703 equipped with a charge pump circuitry to drive the internal MOSFET switch and a flag output is available to indicate fault conditions against large di/dt which may cause the supply to fall out of regulation. In order to fit different application, an IP pin is offered for current limit point setting, a resistor from IP to ground sets the current limit for the switch.

FEATUREs
● Adjustable Current Limiting Up To 3.5A
● Built-In (Typically 80mΩ) N-Channel MOSFET
● Reverse Current Flow Blocking (no body diode) i.e. Output Can Be Forced Higher Than Input (Off-State)
● Low Supply Current: 30µA Typical at Switch On State Less Than 1µA Typical at Switch Off State
● Guaranteed 3A Continuous Load Current
● Wide Input Voltage Ranges: 2V to 5.5V
● Open-Drain Fault Flag Output
● Hot Plug-In Application (Soft-Start)
● 1.7V Typical Under-Voltage Lockout (UVLO)
● Thermal Shutdown Protection
● Smallest SOP-8 Package Minimizes Board Space

APPLICATIONs
● LCD Monitor, LCD-TV
● USB Power Module for ADSL
● Information Appliance and Set-Top Box
● Battery-Powered Equipment
● Hot-Plug Power Supplies
● ACPI Power Distribution
● PCI Bus Power Switching
● Motherboard & Notebook PCs
● PC Card Hot Swap Application