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FAN5059 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN5059 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 18 page www.fairchildsemi.com Pentium is a registered trademark of Intel Corporation. Programmable Active Droop is a trademark of Fairchild Semiconductor. Rev. 1.0.4 Features •Programmable output for Vcore from 1.3V to 3.5V using an integrated 5-bit DAC • Controls adjustable linears for Vagp (selectable 1.5V/3.3V), Vclock (2.5V), and Vtt (1.5V) or Vnorthbridge (1.8V) • Meets VRM specification with as few as 5 capacitors • Meets 1.550V +40/-70mV over initial tolerance, temperature and transients • Remote sense • Programmable Active Droop™ (Voltage Positioning) • Drives N-Channel MOSFETs •Overcurrent protection using MOSFET sensing • 85% efficiency typical at full load • Integrated Power Good and Enable/Soft Start functions • 24 pin SOIC package Applications •Power supply for Pentium® III Camino Platform •Power supply for Pentium III Whitney Platform • VRM for Pentium III processor • Programmable multi-output power supply Description The FAN5059 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 Camino, and provides a complete solution for the Intel Whitney and other high-performance processors. The FAN5059 features remote voltage sensing, independently adjustable current limit, and a proprietary Programmable Active Droop™ for optimal converter transient response. The FAN5059 uses a 5-bit D/A converter to program the output voltage from 1.3V to 3.5V. The FAN5059 uses a high level of integration to deliver load 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 +1.5V 10 9 +2.5V 12 11 19 OCL - + VCCP PWRGD, OCL V 3.3/1.5V 15 14 13 RD RS - + + - + - + FAN5059 High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms |
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