ADP3159
FEATURES
Optimally pensated Active Voltage Positioning with Gain and Offset Adjustment (ADOPT™) for Superior Load Transient Response plies with VRM 8.4 Specifications with Lowest System Cost 4-Bit Digitally Programmable 1.3 V to 2.05 V Output N-Channel Synchronous Buck Driver Two On-Board Linear Regulator Controllers Total Accuracy ؎0.8% Over Temperature High Efficiency Current-Mode Operation Short Circuit Protection Power Good Output Overvoltage Protection Crowbar Protects Microprocessors with No Additional External ponents APPLICATIONS Core Supply Voltage Generation for: Intel Pentium® III Intel Celeron™
4-Bit Programmable Synchronous Buck Controllers ADP3159/ADP3179
FUNCTIONAL BLOCK DIAGRAM
VCC CT
ADP3159/ADP3179
UVLO & BIAS OSCILLATOR SET RESET CROWBAR REFERENCE GND DAC+20% VLR1 LRFB1 LRDRV1 VLR2 LRFB2 LRDRV2 gm P REF VID DAC CMP
- + CS+ FB PWRGD REF PWM DRIVE DRVL DRVH
DAC- 20% CS-
VID3
VID2
VID1
VID0
GENERAL DESCRIPTION
The ADP3159 and ADP3179 are highly efficient output...
