5 4 3 2 1 REVISION HISTORY ECO C10 0.01uF 50V LT3514EUFD 25 24 OPTIONAL CIRCUIT C5 2.2uF 6.3V C6 1uF 50V C19 1uF 50V C26 1uF 50V C27 1uF 50V C20 OPT 50V C25 OPT 50V EN/UVLO 3 ON GND VOUT4 1 JP1 13 12 L3 4.7uH NPIM73P4R7MTRF 4 1% RUN/SS3 DA4 C23 100pF RUN/SS4 FB4 VOUT3 3.3V / 2A C GND E8 R11 21 1% L4 4.2uH CDRH5D28-4R2 7 8 E7 C14 C3 47uF 0.1uF 50V 6.3V 1206 VOUT4 R1 12.7k 1% MBRM140T3G C1 22uF 6.3V 0805 C21 330pF VOUT4 E3 C12 0.1uF 50V 1.8V / 1A GND E4 R9 19 1% B GND GND 27 GND 18 GND 10 29 NC NC 22 NC RT/SYNC 3 2 1 ON SW4 GND E10 VOUT3 R3 31.6k 1% 3 PG RUN/SS1 VOUT1 5V / 1A R12 D3 B240A EN/UVLO E9 C4 C13 22uF 0.1uF 10V 50V 0805 C24 OPT 20 VIN 14 3 R5 18.2k 1% (1MHz) RUN/SS3 JP3 C18 47nF 10V R4 53.6k 1% 10k 17 RUN/SS4 E14 6 3 1 2 15 ON OFF RUN/SS4 D4 MBRM140T3G D1 RUN/SS1 2 1 C17 47nF 10V 5 10k RUN/SS3 E15 EDWIN L. D 10k DA3 23 RUN/SS1 C7 47nF 10V APPROVED 3-11-13 L1 8.2uH CDRH5D28-8R2 VIN SW3 E11 E12 FB1 R6 200K PG JP4 RUN/SS3 28 16 ON OFF B 26 VIN FB3 JP2 RUN/SS1 R8 100k 1% 11 VIN R7 475K 1% 2 OFF PG C28 OPT 50V DA1 VIN NC E2 SW1 SW5 L5 10uH 9 + SKY 2 VIN E1 C8 5.4V - 36V 22uF 50V VIN DATE PRODUCTION U1 C11 2.2uF 50V 1206 1 D DESCRIPTION 3 FB1 L6 FERRITE BEAD 8.2uH VEMI C REV RUN/SS4 OFF SYNC SYNC E13 CUSTOMER NOTICE A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. 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. 5 4 3 APPROVALS PCB DES. APP ENG. TECHNOLOGY JW 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 EDWIN L. SIZE N/A SCALE = NONE IC NO. 36V TRIPLE BUCK REGULATOR WITH INTERNAL SKYHOOK LT3514EUFD DEMO CIRCUIT 1980A DATE: Tuesday, May 14, 2013 2 SHEET 1 1 REV. 3 OF 1 A