5 4 3 2 1 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 DATE 3 PROD 11/11/04 APPROVED D D PVIN E9 OPTION VIN E1 C7 OPT L1 SUMIDA CDRH6D38-5R0 R1 VIN 2.7V - 16V 0.03 C1 4.7uF D1 DFLS140 5uH IADJ1 * E5 1 R11 OPT 1 2 1 IADJ2 * E6 2 R10 OPT VIN C5 OPT 17 SW VIN FBN 6 IADJ1 9 IADJ2 N/C N/C N/C 18 19 20 ISP2 11 U1 C6 OPT LT3477EFE SHDN E2 1 SHDN 1% 330mA 36V MAX 2 1% 7 FBP 8 VREF 5 VC ISN2 1 OPT R2 1k GND RT SS 4 2 R13 15 R12 OPT -VOUT 1 2 VOUT 12 R14 0 GND R6 10k R4 0.3 R7 10k B C 1% 10 3 E8 2.2uF R5 280k SW 16 14 ISN1 C 13 R9 0 1 R8 0 ISP1 2 E3 1 GND C4 2.2uF 2 25V C8 2 R3 22k E4 E7 VOUT LED+ GND LED- B C3 0.033uF C2 4700pF * MUST INSTALL R10, R11 AND REMOVE R8, R9 FOR IADJ FUNCTION. CONTRACT NO. APPROVALS DRAWN A MEI CHECKED APPROVED ENGINEER DESIGNER Monday, April 11, 2005 5 4 3 DATE 09/21/04 TECHNOLOGY TITLE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 SCH, LT3477EFE, CONSTANT CURRENT BOOST CONVERTER WITH INPUT CURRENT AND OUTPUT VOLTAGE PROTECTION SIZE CAGE CODE FILENAME: SCALE: 2 DWG NO 841A-3.DSN REV DC841A 3 SHEET 1 1 OF 1 A