1 2 3 4 A A LED1 L2 LED2 LED3 D1 L1 LED4 SW U1 + JP1 2 1 1 C1 2 Vin FB EN R1 5 + JP2 EN GND 3 - B SW C2TP1 4 C20 - A8483 1 2 B R3 FB PWM Q1 C3 C4 R4 R2 R5 GND C4 can be replaced by R for pull down C C Title D Size D Number Revision A Date: File: 1 2 3 3/13/2006 \\..\A8483.SchDoc Sheet of Drawn By: 4