1 L1 R1 100K JP1 A 2 C4 0.1uF 16V 11 Vin 12 SHDN 3 SHDN RUN 16 MON OUT E7 C8 0.01uF * C7 0.22uF 50V n/c 1 FB 14 R4 10K 13 CTRL E3 VIN GND C5 0.22uF 50V R7 APD IN 2 17 GND CTRL A Vout2 4 Vout1 5 10 GND MON OUT U1 LT3482EUD 1 * J1 E4 E5 R8 (OPT) B R3 1M R9 1K C10 0.1uF 100V R6 100K E6 51 C6 0.01uF 100V R5 15K 2 3 4 5 R2 1M MON IN 3 E2 50V 6.8uH SW 8 SW 7 C3 1uF 16V C1 0.1uF PUMP 6 VIN 1 GND E1 15 FSET 9 PGND VIN 3V-12V 2 APD 80V 2mA GND 0.1V - 1.25V at CTRL Varies APD Voltage from 6V - 80V CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S 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 TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 B CONTRACT NO. APPROVALS DRAWN DATE HELEN 9/07/06 ENGINEER Jesus.R 9/07/06 CHECKED TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 TITLE LT3482EUD, DC/DC Boost Converter for APD Bias APPROVED DESIGNER Thursday, February 01, 2007 SIZE CAGE CODE SCALE: DWG NO FILENAME: SHEET 2 REV A DC975A 1 OF 1