E1 R3 100K R9 0 R4 C1 22uF 16V L1 2.2uH + CIN1 100uF 16V GND E2 100K E5 D1 U1 LT3757AEDD 1 2 9 OFF 1 2 C12 100pF R6 20K C11 4.7nF 4 R7 30.9K C13 5 3 SHDN/UVLO VC VIN INTVcc 10 8 C10 4.7uF 10V FBX RT GATE SYNC SS SENSE 7 6 5 Q1 RJK0328DPB E3 4 C3 22uF 16V 123 C4 22uF 16V VOUT 12V @ 1.5A C5 22uF 16V GND E4 11 0.1uF SYNC DFLS220L-7 ON 3 JP1 RUN GND VCC VIN 3.1V - 9V R5 0.008 1W R1 130K 1% E6 R8 10K R2 20.0K 1% GND E7 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. TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC High Efficiency Boost Converter SIZE N/A DATE: IC NO. REV. LT3757AEDD DEMO CIRCUIT 1547B Friday, April 17, 2015 1 SHEET 1 OF 1