Overview: ADP3208D 7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller The ADP3208D is a highly efficient, multiphase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3208D is optimized for converting the notebook battery voltage http://onsemi.com into the core supply voltage required by high performance Intel processors. An internal 7−bit DAC is used to read a VID code directly from the processor and to set the CPU core voltage to a value within the range of 0.3 V to 1.5 V. The phase relationship of the output signals ensures interleaved 2−phase operation.
The ADP3208D uses a multi−mode architecture run at a LFCSP48 CASE 932AD
MARKING DIAGRAM programmable switching frequency and optimized for efficiency depending on the output current requirement. The ADP3208D switches between single− and dual−phase operation to maximize efficiency with all load conditions. The chip includes a programmable load line slope function to adjust the output voltage as a function of the load current so that the core voltage is always optimally positioned for ADP3208D AWLYYWWG a load transient. The ADP3208D also provides accurate and reliable short−circuit protection, adjustable current limiting, and a delayed power−good output. The IC supports On−The−Fly (OTF) output voltage changes requested by the CPU.
The ADP3208D is specified over the extended commercial temperature range of −10°C to 100°C and is available in a 48−lead LFCSP.
