5 4 3 2 1 REVISION HISTORY ECO REV _ B DESCRIPTION APPROVED DATE PRODUCTION WALKER B. 10-1-13 D D GND FB1 E1 C11 1µF 50V 0805 E2 C12 0.1µF 50V C3 4.7µF 50V 1206 L2 4.7µH C10 4.7µF 50V 1206 C1 22µF + 63V SUNCON 63CE22BS C2 4.7µF 50V 1206 C13 0.1µF 50V R1 1.00M 5 R6 (Opt) EN/UV SYNC C 4 1 E5 JP1 13 3 C7 1µF 25V 0603 2 GND 1 2 3 GND E7 7 8 VIN BST C4 0.22µF 16V 0603 VIN EN/UV SW SYNC SW INTVCC SW TR/SS BIAS RT PG PGND FB PGND C8 0.1µF L1 2.2µH 9 VOUT XAL5030-222MEC 10 C9 4.7µF 16V 0805 C6 47µF 10V 1210 11 E3 R4 49.9k 16 R5 243k 1.00M C5 10pF APPROVALS 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. 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 GND R3 15 E8 CUSTOMER NOTICE VOUT 5V / 2.5A C E4 14 E9 NOTES: UNLESS OTHERWISE SPECIFIED 5 12 17 R2 18.2k (2MHz) 0603 B 6 E6 SYNC TR/SS U1 LT8610EMSE GND VIN 5.5V - 42V TECHNOLOGY JW WALKER B. B 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 SIZE N/A SCALE = NONE PG DATE: 2 2MHz, 2.5A MICROPOWER SYNCHRONOUS MONOLITHIC STEP-DOWN REGULATOR IC NO. LT8610EMSE DEMO CIRCUIT 1749B A REV. 1 Friday, August 02, 2013 SHEET 1 1 OF 1