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RT9703CS Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9703CS Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 14 page  1 RT9703 Preliminary DS9703-00 September 2003 Features Pin Configurations Applications 80m Ω Ω Ω Ω Ω, 3A Smart Universal Power Switch with Flag 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) dd80m Ω 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. 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, a precision resistor-programmable output current limit up to 3.5A. Besides, the lower quiescent current as 30 µA making this device ideal for portable battery-operated equipment. The RT9703 is available in SOP-8 package requiring minimum board space and smallest components. Ordering Information RT9703 Package Type S : SOP-8 Operating Temperature Range C : Commercial Standard 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 Adjustable Current Limiting Up To 3.5A Built-In (Typically 80m Ω Ω Ω Ω Ω) N-Channel MOSFET Reverse Current Flow Blocking (no body diode) i.e. Output Can Be Forced Higher Than Input (Off-State) Low Supply Current: 30 µµµµµA Typical at Switch On State Less Than 1 µµµµµA 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 (TOP VIEW) SOP-8 FLG VOUT VOUT GND CE VIN VIN IP 2 3 4 5 8 7 6 ≈ |
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