Analog Devices Unveils the ADP3020 Converter and Synchronous-Buck Controller

Analog Devices Inc. (Norwood, MA) unveiled the ADP3020, a dual dc/dc converter and synchronous-buck switching controller. The ADP3020 is optimized for converting battery or adapter input into system supply voltages. The solution joins Analog Devices' power-management line of battery chargers, LDOs and core-CPU dc/dc converters, giving the company a full range of power-management offerings for notebook PCs.

The ADP3020 is designed for portable applications with input sources ranging from 4.5V to 25V; operation at 200kHz, 300kHz and 400kHz; and synchronization to an external clock up to 600kHz. Low shutdown and standby currents, 7uA and 250uA respectively, further increase battery life. To reduce size and cost, the ADP3020 does not use current-mode controllers, but instead employs voltage-mode control, eliminating the need for sense resistors. It also has a built-in LDO, saving designers additional external component space and cost.