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5-Bit Programmable Triple Power Supply Controller for Pentium® III Processors ADP3155
FUNCTIONAL BLOCK DIAGRAM
VCC DRIVE1 DRIVE2 PGND AGND PWRGD SENSE+ SENSE– NONOVERLAP DRIVE SD CROWBAR IN OFF CMPI Q S R gm REFERENCE CMPT OFF-TIME CONTROL VIN SENSE– VLDO2 FB2 VLDO1 FB1 VREF +5% VT1 VREF VREF –5% DELAY VREF +15% 2R
FEATURES Active
Voltage Positioning with Gain and Offset Adjustment Optimal Compensation for Superior Load Transient Response VRM 8.
2, VRM 8.
3 and VRM 8.
4-Compliant 5-Bit Digitally Programmable 1.
3 V to 3.
5 V Output Dual N-Channel Synchronous Driver Two Onboard Linear Regulator Controllers Total Output Accuracy ؎1% Over Temperature High Efficiency, Current-Mode Operation Short...