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ADP3157 - 5-Bit Programmable Synchronous Controller

General Description

The ADP3157 is a highly efficient synchronous buck switching regulator controller optimized for converting the 5 V main supply into the core supply voltage required by the Pentium III and other high performance processors.

Key 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 Total Output Accuracy ؎1% Over Temperature High Efficiency, Current-Mode Operation Short Circuit Protection Overvoltage Protection Crowbar Protects Microprocessors with No Additional External Components Power Good Output SO-16 Package.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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a 5-Bit Programmable Synchronous Controller for Pentium® III Processors ADP3157 FUNCTIONAL BLOCK DIAGRAM VCC DRIVE1 DRIVE2 PGND AGND PWRGD SENSE+ SENSE– DELAY NONOVERLAP DRIVE VREF +15% 2R CROWBAR IN CMPI Q S R gm VREF REFERENCE 1.20V VID0 SENSE– VID1 VID2 R VT1 VREF +5% VREF –5% 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.