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FAN5056MV85 数据表(PDF) 1 Page - Fairchild Semiconductor |
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FAN5056MV85 数据表(HTML) 1 Page - Fairchild Semiconductor |
1 / 15 page www.fairchildsemi.com Pentium is a registered trademark of Intel Corporation. Programmable Active Droop is a trademark of Fairchild Semiconductor. REV. 1.0.6 6/26/01 Features • Output programmable in 25mV steps from 1.05V to 1.825V using a dynamically programmable integrated 5-bit DAC • Controls adjustable linears for Vclock (2.5V), Vnorthbridge (1.8V) or Vagp (selectable 1.5V/3.3V), and Vadj (1.2V nominal) • Remote sense • Programmable Active Droop™ up to 200mV • Drives N-Channel MOSFETs • Overcurrent protection using MOSFET sensing • Overvoltage protection including startup • 85% efficiency typical at full load • Integrated Power Good and Enable/Soft Start functions • Meets Intel VRM8.5 specifications using minimum number of external components • 24 pin SOIC package Applications • Power supply for Pentium® III Platforms • VRM for Pentium III processor • Programmable multi-output power supply Description The FAN5056 is a synchronous mode DC-DC controller IC which provides a highly accurate, programmable set of output voltages for multi-voltage platforms such as the Intel Pentium III, and provides a complete solution for all Intel VRM8.5 CPU applications, and for other high-performance processors. The FAN5056 features remote voltage sensing, independently adjustable current limit, and a proprietary wide-range Pro- grammable Active Droop™ for optimal converter transient response and VRM8.5 compliance. The FAN5056 uses a 5-bit D/A converter to dynamically program the output voltage dur- ing operation from 1.05V to 1.825V in 25mV steps. The FAN5056 uses a high level of integration to deliver load cur- rents in excess of 28A from a 5V source with minimal exter- nal circuitry. Synchronous-mode operation offers optimum efficiency over the entire specified output voltage range. An on-board precision low TC reference achieves 0.8% voltage regulation without expensive external components. The FAN5056 includes linear regulator controllers for Vclock (2.5V),Vnorthbridge (1.8V) or Vagp (selectable 1.5V/3.3V), and Vadjustable (1.2V nominal) each adjustable with an external divider. The FAN5056 also offers integrated functions Block Diagram VID3 VID2 VID1 16 VID0 GNDP 23 22 2 18 24 1 17 - + - + OSC 1.24V Reference Digital Control Power Good 5-Bit DAC VID4 87 6 5 4 +5V +12V PWRGD - + ENABLE/SS VCC GNDA 3 LODRV HIDRV VCCP 21 VCCA +5V 20 - REF REF PWRGD, OCL PWRGD, OCL +3.3V +1.2V/Adj 10 9 +2.5V 12 11 19 OCL - + VCCP PWRGD, OCL V 3.3/1.5V 15 14 13 RD RS - + + - + FAN5056MV85 High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms |
类似零件编号 - FAN5056MV85 |
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类似说明 - FAN5056MV85 |
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