5 D 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 2 DATE PROD APPROVED 01/03/07 D L1 22uH 3V-9V E2 C2 OPT ON 33uF 16V JP1 2 1 VIN C1 D1 OPT 2 1 CAP 5 CAP 6 1uF 2 GND 10V OFF SW 3 SW 4 CTRL E3 R1 8 CTRL C4 100K 1% GND C 2.2uF 50V 10 1% LED 7 LED+ E5 C LED+ 20mA, up to 10 LEDs U1 9 0.1uF C3 R2 1 2 GND + 3 VIN 1 E1 VIN 10V LT3591EDDB E6 LED- 3 LED- R3 PWM 1 Q1 OPT 0 2 PWM E4 B B CONTRACT NO. APPROVALS DRAWN MEI DATE 01/03/06 CHECKED A TECHNOLOGY TITLE APPROVED ENGINEER DESIGNER Thursday, January 11, 2007 5 4 3 SIZE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 SCH, LT3591EDDB, WHITE LED DRIVER WITH INTEGRATED SCHOTTKY CAGE CODE SCALE: DWG NO FILENAME: 2 1124A-2.DSN A REV DC1124A SHEET 2 1 1 OF 1