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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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RT9173CS 데이터시트(PDF) 1 Page - Richtek Technology Corporation |
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RT9173CS 데이터시트(HTML) 1 Page - Richtek Technology Corporation |
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1 / 10 page  RT9173/A DS9173/A-06 March 2002 www.richtek-ic.com.tw 1 1.5A/3A Bus Termination Regulator General Description The RT9173/A regulator is designed to convert voltage supplies ranging from 1.8V to 6V into a desired output voltage which adjusted by two external resistors, voltage divider. The regulator is capable of sourcing or sinking up to 1.5A/3A of current while regulating an output voltage to within 2% or less. The RT9173/A, 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. Applications Computers Disk Drives CD-ROM Supply Splitter Graph Card Ordering Information RT9173/A Features Support Both DDR 1 (1.25VTT) and DDR 2 (0.9VTT) Requirements Power TO-263-5 and SOP-8 Packages Capable of Sourcing and Sinking Current 1.5A/3A 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 Pin Configurations Part Number Pin Configurations RT9173ACM5 (Plastic TO-263-5) TOP VIEW 1. VIN 2. GND 3. VCNTL (TAB) 4. REFEN 5. VOUT RT9173CS (Plastic SOP-8) TOP VIEW Function Block Diagram Operating temperature range C: Commercial standard Package type M5 : TO-263-5 S : SOP-8 3A sink & source 1.5A sink & source Thermal Current Limiting Sensor VOUT REFEN GND CNTL VIN VCNTL 12 3 4 5 VIN GND REFEN VOUT 1 2 3 4 8 7 6 5 VCNTL VCNTL VCNTL VCNTL |
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