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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT9173B датащи(PDF) 1 Page - Richtek Technology Corporation |
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RT9173B датащи(HTML) 1 Page - Richtek Technology Corporation |
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1 / 13 page  RT9173B 1 DS9173B-09 March 2007 www.richtek.com Features Pin Configurations Applications 2A Bus Termination Regulator Ordering Information General Description (TOP VIEW) The RT9173B regulator is designed to convert voltage supplies ranging from 1.7V to 6V into a desired output voltage of which adjusted by two external voltage divider resistors. The regulator is capable of sourcing or sinking up to 2A of current while regulating an output voltage to within 40mV. The RT9173B, used in conjunction with series termination resistors, provides an excellent voltage source for active termination schemes of high speed transmission lines as those seen in high speed memory buses and distributed backplane designs. The voltage output of the regulator can be used as a termination voltage for DDR SDRAM. Current limits in both sourcing and sinking mode, plus on- chip thermal shutdown make the circuit tolerant of the output fault conditions. The RT9173B are available in the popular 5-lead TO-252 and fused SOP-8 (the multiple VCNTL pins on the SOP-8 package are internally connected but lowest thermal resistance) surface mount packages. Support Both DDR I (1.25VTT) and DDR II (0.9VTT) Requirements SOP-8 and TO-252-5 Packages Capable of Sourcing and Sinking Current Current-limiting Protection Thermal Protection Integrated Power MOSFETs Generates Termination Voltages for SSTL-2 High Accuracy Output Voltage at Full-Load Adjustable VOUT by External Resistors Minimum External Components Shutdown for Standby or Suspend Mode Operation with High-impedance Output RoHS Compliant and 100% Lead (Pb)-Free DDR Memory Termination Supply Active Termination Buses Desktop PC/AGP Graphics Set Top Box/IPC Supply Splitter SOP-8 VCNTL GND VIN VOUT REFEN 2 3 4 5 8 7 6 VCNTL VCNTL VCNTL TO-252-5 1 2 3 4 5 VOUT REFEN VCNTL (TAB) GND VIN 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. RT9173B Package Type S : SOP-8 L5 : TO-252-5 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) |
Аналогичный номер детали - RT9173B |
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Аналогичное описание - RT9173B |
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