A 4 B C D E REVISION HISTORY This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts. Customer Notice: Linear Technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customers responsibility to verify proper and reliable operation in the actual application, Component substitution and printed circuit board layout may significantly affect circuit performance or reliability. Contact Linear Applications Engineering for assistance. ECO REV DESCRIPTION 2 DATE PROTO APPROVED 04/12/05 4 C1 U1 LTC3035EDDB 1 0.1uF 2 CP * 4 CIN1 + 22uF 10V CIN 1uF 6.3V OUT 7 SHDN 9 GND ADJ GND BST 3 8 C2 R1 6 140K 1% R5 40.2K 1% JP2 2.5V JP3 3.3V R2 R3 71.5K 1% 78.7K 1% COUT1 OPT 1uF 6.3V E4 GND 1 PCB Layout 3 R6 10M C2 R1 C1 2 * 3 E5 GND 2 OFF COUT 1uF 6.3V R4 0 1uF 6.3V VOUT ENABLE JP5 ON E3 VOUT 300mA 5 JP1 1.8V E2 GND 3 CM VIN R5 E1 VIN 1.7V-5.5V U1 CIN CIN1 is an optional capacitor. It is inserted on the DC886 to dampen the (possible) ringing voltage due to the use of long input leads. On a normal, typical PCB, with short traces, CIN1 is not needed. COUT CONTRACT NO. APPROVALS DRAWN MEI 1 DATE 04/12/05 CHECKED TECHNOLOGY TITLE 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC3035EDDB, VLDO LINEAR REGULATOR 1 APPROVED ENGINEER DESIGNER SIZE CAGE CODE Thursday, August 11, 2005 A B C SCALE: NONE DWG NO REV 2 DC886A Custom FILENAME: 886A-2.DSN D SHEET 1 E OF 1