L4977A 7A SWITCHING REGULATOR

L4977A 7A SWITCHING REGULATOR

The L4977A is a stepdown monolithic power switching regulator delivering 7A at a voltage variable from 5.1 to 40V. BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY Multiwatt15V ORDERING NUMBER: L4977A Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficien.

Features

of the L4977A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components. June 2000 1/21 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. L4977A ABSOLUTE MAXIMUM RATINGS Symbol V9 V9 V7 I7 V6 V3, V12 V4 .