A B VIN 6.5V - 100V 1 E2 + GND C3 2.2uF 100V 1210 C2 10uF 100V 100CE10BS E3 3 5 R4 1M 6 7 EN/UV 8 E4 9 10 R6 OPT R3 25.5K (400kHz) 3 D E1 VIN SW EN/UV BST PG INTVCC NC NC SYNC/MODE IND RT NC NC VOUT TR/SS FB 20 C1 0.1uF 0402 10V 18 16 14 PG R1 51.1k D1 DFLS1100 OPT C5 2.2uF 10V 0402 15 4 L1 22uH IHLP2525CZER220M11 13 12 R2 1M 1% 11 GND C8 0.1uF E U1 LT8631EFE C11 OPT 100V VIN 4 C C7 47uF 10V 1210 C6 4.7pF 21 C4 1uF 10V E6 R5 191k 1% TR/SS E5 VOUT 5V / 1A GND 3 1 E10 FIXED FREQ 2 BURST MODE E7 3 SYNC SYNC 4 JP1 L2 2.2uH 2 VIN 2 VEMI E8 C9 2.2uF 100V 1210 C10 2.2uF 100V 1210 XFL4020-222ME GND E9 CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED 1 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. TECHNOLOGY TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. A B C 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only N/A DATE: 1 100V 1A SYNCHRONOUS MICROPOWER BUCK REGULATOR IC NO. LT8631EFE DEMO CIRCUIT 2110A SHEET Wednesday, July 08, 2015 D E REV. 3 1 OF 1