1 2 3 4 5 6 7 8 REVISION HISTORY ECO REV DESCRIPTION APPROVED DATE _ 1 REBUILD WITH CHANGE GORAN P. 2-18-15 A A E1 VIN R4 124K R3 100K R5 Opt. CIN1 22uF CIN2 6.3V CIN3 CER L1 ETQP6F1R2H + CIN4 220uF 6.3V E2 1 U1 E5 3 RC 22.1K 1% 1 CC2 6800pF R6 0 VIN VOUT 8 INTVCC FREQ 5 JP1 Cont. MODE/SYNC 7 GATE COUT5 COUT6 22uF COUT7 6.3V COUT8 CER 4 COUT1 + COUT2 220uF COUT3 6.3V COUT4 COUT9 22uF 6.3V CER Q1 FDMS7672 CVCC + 4.7uF X5R 10V LTC1871EMS10 5.0V @ 7A B (10A PEAK) E4 6 GND 2 Burst E3 9 3 RT 80.6K 1% ITH FB 10 SENSE 1 2 3 4 RUN 5 6 7 8 2 CC1 47pF GND 3 1 RUN B D1 MBRB2515L 4 3.3V GND R1 38.3K 1% R2 12.4K 1% E6 MODE/SYNC C C CUSTOMER NOTICE D NOTES: UNLESS OTHERWISE SPECIFIED APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; TECHNOLOGY HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. LT VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. GORAN P. TITLE: SCHEMATIC APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT HIGH EFFICIENCY BOOST PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. SIZE 1. ALL RESISTORS AND CAPACITORS ARE 0805. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 2 3 4 IC NO. N/A SCALE = NONE 5 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only D CONVERTER LOGIC SUPPLY REV. LTC1871EMS 1 DEMO CIRCUIT 414B DATE: Wednesday, February 18, 2015 6 7 SHEET 1 8 OF 1