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RT9174 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9174 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 7 page  RT9174 Preliminary 1 DS9174-06 March 2007 www.richtek.com Features Integrated Three Linear Controllers in a SOP-8 Package Driving NPN or NMOSFET Sourcing ( > 100mA) and Sinking ( > 5mA) Driver Tri-State Output Driver Low Internal 0.8V Reference Adjustable Output Voltage Setting High Output Stability VDDQ 1.5/3.3V Automatic Changing for AGP Wide 3V to 8V Input Voltage Range Current Limiting and Thermal Protection RoHS Compliant and 100% Lead (Pb)-Free Pin Configurations Applications Mother Boards Power Supply Graphic Cards Triple Linear Regulator Controllers Ordering Information General Description The RT9174 is a triple linear regulator controller designed for motherboard application. The regulators are intended to regulate the computer system AGP (2X/4X) power, the 2.5V clock power, and the 1.8V power forNorth/South Bridge core voltage and/or cache memory circuits. All controllers can drive NPN or NMOSFET pass transistor. A special scheme employing driver voltage could be higher than VDD when driving NMOSFET through the 12V power. The RT9174 future a small SOP-8 package for saving board area. It also builds in current limiting and thermal shutdown protection function. VDD DRI 1 FB1 GND FB2 DRI 2 FB3 DRI 3 2 3 4 5 6 7 8 (TOP VIEW) SOP-8 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. Function Block Diagram + - + - OC + - + - OC DRI2 FB2 DRI3 FB3 + - + - OC 0.8V 1.3V Reference Thermal Limit DRI1 FB1 GND VDD RT9174 Package Type S : SOP-8 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard |
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