ADP3158
FEATURES
Optimally pensated Active Voltage Positioning with Gain and Offset Adjustment (ADOPT™) for Superior Load Transient Response plies with VRM Specifications with Lowest System Cost 4-Bit Digitally Programmable 1.3 V to 2.05 V Output N-Channel Synchronous Buck Driver Total Accuracy ؎0.8% Over Temperature Two On-Board Linear Regulator Controllers Designed to Meet System Power Sequencing Requirements High Efficiency Current-Mode Operation Short Circuit Protection for Switching Regulator 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
ADP3158/ADP3178
FUNCTIONAL BLOCK DIAGRAM
UVLO & BIAS
ADP3158/ ADP3178
OSCILLATOR
PWM DRIVE
REFERENCE REF
DRVH
DRVL GND
LRFB1
VLR1
LRDRV1 LRFB2
VLR2
LRDRV2 P
DAC+20%
- +
CS- CS+ gm
VID DAC
VID3 VID2 VID1 VID0
GENERAL DESCRIPTION
The ADP3158 and...
