ADP3211, ADP3211A 7-Bit, Programmable, Single-Phase, Synchronous Buck Controller The ADP3211 is a highly efficient, singlephase, synchronous buck switching regulator controller. With its integrated driver, the ADP3211 is optimized for converting the notebook battery voltage to ADP3211, ADP3211A GND VCC EN RPM RT RAMP PVCC BST UVLO Shutdown Oscillator and Bias DRVH COMP MOSFET SW Driver VEA FB DRVL REF + + PGND + OVP CSREF LLINE + 1.55V OCP DAC + 200mV Shutdown Delay + CSREF Current Monitor IMON Current + Limit DAC 300 mV Circuit CSREF + PWRGD Startup CSFB PWRGD Delay Open PWRGD Drain CSCOMP Soft Transient ILIM Delay CLKEN CLKEN Open Delay Drain CLKEN Disable GPU Start Up Delay Precision FBRTN Reference Soft Start and Soft VID Transient DAC Control DAC REF Figure 1. Functional Block Diagram