SC4612

Wide Input Range High Performance Synchronous Buck Switching Controller POWER MANAGEMENT Description SC4612 is a high performance synchronous buck controller that can be configured for a wide range of applications. The SC4612 utilizes synchronous rectified buck topology where high efficiency is the primary consideration. SC4612 is optimized for applications requiring wide input supply range and low output voltages down to 500mV. SC4612 implements an asynchronous soft-start mode, which keeps the lower side MOSFET off during soft-start, a www.DataSheet4U.com desired feature when a converter turns on into a preset external voltage or pre-biased output voltage. With the lower MOSFET off, the external bus is not discharged, preventing any disturbances in the start up slope and any latch-up of modern day ASIC circuits. SC4612 comes with a rich set of features such as regulated DRV supply, programmable soft-start, high current gate drivers, internal bootstrapping for driving high side N-channel MOSFET, shoot through protection, RDS-ON sensing with hiccup over current protection, and asynchronous start up with over current protection. SC4612 Features ‹ ‹ ‹ ‹ ‹ ‹ Wide voltage range, VDD = 28V, VPWRIN = 40V Internally regulated DRV Output voltage as low as 0.5V 1.7A gate drive capability Asynchronous start up mode Low side RDS-ON sensing with hiccup mode current limit ‹ Programmable current limit ‹ Programmable frequency up to 1.2 MHz ‹ Available in MLPD-12 and SOIC-14 Lead-free pack...