5 4 3 TP1 VIN * ECO R6 R19 0 0 2512 + TP2 C3 C4 OPT 1210 C1 33uF,100V 100CE33FS C6 1uF 100V 1206 C2 C5 2.2uF 100V 1210 REV IVINMON E7 5 6 7 8 19 20 R5 100K SW C9 C11 22uF 25V 1210 + C8 C10 68uF 16V VREF BG R8 100K GND 26 14 R11 5.62K CTRL1 R9 OPT SENSE+ D2 DFLS260L 4 Q3 Q4 RJK0851DPB R14 487 C16 OPT R10 0 17 C14 1nF FB FAULT 9 PWM 22 GND VC 29 R15 30.9K SS GND 18 SENSE- 12 C15 10nF CTRL2 GND 15 28 E6 GND CTRL2 23 13 16 R13 0 11 5 6 7 8 E5 R22 1 0 CTRL1 C E4 INTVCC R25 100K J5 Q5 BSC014N03LSG LED- B 4 1 2 3 R7 45.3K GND J4 2 5 R12 680K TP4 C12 22uF 0805 SYNC VREF C13 2nF D1 DFLS160 1 E3 21 INTVCC 2 VOUT 10A / 10V J3 INTVCC RT TP3 1 2 3 C 0 R4 0.005 2512 5 6 7 8 R3 100K U1 LT3763EFE EN/UVLO C7 0.22uF 1 4 27 L1 2.8uH WE 7443551280 4 R16 BOOST EN/UVLO 25 1 2 3 TG Q1 Q2 RJK0851DPB 2 ISMON 8 IVINMON 6 3 VIN FBIN IVINN 10 IVINP 7 R27 100K E8 VIN C18 OPT R20 OPT R2 124K ISMON VREF R21 OPT R1 374K B DATE WALKER B. 09-11-12 D VIN E2 APPROVED R26 0 VIN GND DESCRIPTION PRODUCTION C20 OPT C19 1nF E1 2 R23 0 PWM_OUT J2 R18 0 24 J1 D SYNC 1 REVISION HISTORY __ 12V - 60V GND 2 VIN R24 100K R17 0 2512 C17 5.1nF FAULT E10 PWM E11 NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603, +/-10%. A 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 PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. * - SEE QUICK START GUIDE FOR VIN RANGE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 APPROVALS 4 3 TECHNOLOGY A.K. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only WALKER B. TITLE: SCHEMATIC HIGH POWER CONSTANT CURRENT, CONSTANT VOLTAGE SYNCHRONOUS BUCK CONTROLLER SIZE N/A SCALE = NONE DATE: 2 IC NO. REV. LT3763EFE 2 DEMO CIRCUIT 1831A Tuesday, September 18, 2012 SHEET 1 1 OF 1 A