LT3844 EFE Linear Technology High Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequency

The LT®3844 is a DC/DC controller used for medium power, low part count, high effi ciency supplies. It offers a wide 4V to 60V input range (7.5V minimum start-up voltage) and can implement step-down, step-up, inverting and SEPIC topologies. The LT3844 includes Burst Mode operation, which reduces quiescent current below 120μA and maintains high effi - ciency at light loads. An internal high voltage bias regulator allows for simple biasing. Additional features include current mode control for fast line and load transient response; programmable fi xed operating frequency that can be synchronized to an external clock for noise sensitive applications; a gate driver capable of driving large N-channel MOSFETs; a precision undervoltage lockout function; 10μA shutdown current; short-circuit protection and a programmable soft-start function. The LT3844 is available in a 16-lead thermally enhanced TSSOP package.