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RT9702 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9702 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 16 page  RT9702/A 1 DS9702/A-11 June 2007 www.richtek.com 80m Ω Ω Ω Ω Ω, 500mA/1.1A High-Side Power Switches with Flag 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. Ordering Information General Description The RT9702 and RT9702A are cost-effective, low voltage, single N-Channel MOSFET high-side power switches, optimized for self-powered and bus- powered Universal Serial Bus (USB) applications. The RT9702/A equipped with a charge pump circuitry to drive the internal MOSFET switch; the switch's low RDS(ON), 80m Ω, 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, fault current is limited to typically 800mA for RT9702 in single port and 1.5A for RT9702A in dual ports in accordance with the USB power requirements, lower quiescent current as 25 μA making this device ideal for portable battery-operated equipment. The RT9702/A is available in SOT-23-5 and TSOT-23-5 packages requiring minimum board space and smallest components. Features Compliant to USB Specifications Built-In (Typically 80m Ω Ω Ω Ω Ω) N-Channel MOSFET Output Can Be Forced Higher Than Input (Off-State) Low Supply Current : 25 μμμμμA Typical at Switch On State 1 μμμμμA Typical at Switch Off State Guaranteed 500mA/RT9702 and 1.1A/RT9702A 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) Current Limiting Protection Thermal Shutdown Protection Reverse Current Flow Blocking (no body diode) Smallest SOT-23-5 and TSOT-23-5 Packages Minimizes Board Space UL Approved −−−−−E219878 TUV IEC60950-1 : 2005 Certified RoHS Compliant and 100% Lead (Pb)-Free Applications USB Bus/Self Powered Hubs USB Peripherals ACPI Power Distribution PC Card Hot Swap Notebook, Motherboard PCs Battery-Powered Equipment Hot-Plug Power Supplies Battery-Charger Circuits 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. RT9702/A Package Type B : SOT-23-5 J5 : TSOT-23-5 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) 1.1A Output Current 500mA Output Current |
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