Elete pushed by tracking Synchronous Buck DC/DC controller output

Corporation (Linear Technology) the day before launch with 3mm * 3mm DFN-10 (or MSOPE-10) no RSENSE package (No RSENSE) LTC3809-1 is a Synchronous Step-Down controller. The device has a 550kHz frequency and current mode architecture with MOSFET VDS detection without current sense resistors, while having a efficiency of up to 95%. 2.75V to 9.8V input voltage range of LTC3809-1 to make it very suitable for single or two or a plurality of lithium ion battery Ni MH / Ni Cd / alkaline battery application, also can use the standard 3.3V and 5V power rail to work in the quiescent current is only 100uA burst mode (Burst Mode) or low output voltage ripple pulse jump or forced continuous mode.

The LTC3809-1 has a user adjustable tracking / soft start input that allows the output voltage to rise smoothly during start-up. Other features include a default internal soft start circuit, an auxiliary winding regulator and output overvoltage protection.