SC1402

© 2000 SEMTECH CORP.

652 MITCHELL ROAD

NEWBURY PARK CA 91320

Multi-Output, Low-Noise Power Supply

Controller for Notebook Computers

December 15, 2000

15

PCB Layout

As with any high frequency switching regulator it is advisable to practice a careful layout strategy. This includes

keeping loop area as small as possible. Properly decoupling lines that pull large amounts of current in short peri-

ods of time. To keep loop area small always use a ground plane and if possible split the plane in two areas, signal

GND and power GND then tie the two together at one point. Be sure that high current paths have low inductance

by making track widths wide where possible. We recommend the following layout for the SC1042 shown below.

This layout has been optimized for having tight loop areas and bypassing the SC1402 properly.