SC2621A
Description
The SC2621A provides the control and protection features necessary for a synchronous buck converter and a linear regulator in high performance graphic card applications. The SC2621A is designed to directly drive the top and bottom MOSFETs of the buck converter. It uses an internal 8.2V supply as the gate drive voltage for minimum driver power loss and MOSFET switching loss. It allows the converter to operate with 4V to 25V power rail and as low as 0.5V output. The SC2621A is capable to drive a N-type MOSFET in a linear regulator with as low as 0.5V output. The SC2621A features soft-start, supply power under voltage lockout, and hiccup mode over current protection. The SC2621A monitors the output current by using the Rdson of the bottom MOSFET in the buck converter that eliminates the need for a current sensing resistor. The SC2621A is offered in SOIC-14 package.
Features u u u u u u u u u
4V to 25V power rails Internal LDO for optimum gate drive voltage 1.5A gate...
