5 4 3 2 1 REVISION HISTORY ECO REV _ 3 DESCRIPTION APPROVED DATE PRODUCTION WALKER B. 09-25-13 D D GND E1 C11 0.1uF 50V E2 EN/UV SYNC C C12 0.1uF 50V C3 4.7uF 50V 1206 L2 4.7uH C10 4.7uF 50V 1206 + C1 22uF 63V SUNCON 63CE22BS C2 2.2uF 50V 1206 C13 0.1uF 50V 0603 U1 LT8610ABEMSE R1 1M 5 R6 OPT 4 E6 E5 1 3 2 1 SYNC GND 13 JP1 GND 6 2 C7 1uF 0603 25V 3 R2 18.2k (2MHz) 0603 E9 7 8 VIN EN/UV SW SYNC SW INTVCC SW TR/SS BIAS RT PG PGND FB GND C4 0.22uF 16V 0603 9 L1 2.2uH VOUT E3 XAL5030-222MEC 10 C14 47uF 10V 1210 11 C6 47uF 10V 1210 C E4 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. * REFER TO THE DEMO MANUAL FOR VIN RANGE. A CUSTOMER NOTICE 49.9k R4 16 R5 243k 1Meg C5 10pF 5 4 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 GND R3 15 E8 NOTES: UNLESS OTHERWISE SPECIFIED VOUT 5V / 3.5A C9 1uF 16V 0805 14 17 C8 0.1uF B 12 VIN TR/SS E7 BST GND * VIN 5.5V - 42V FB1 TECHNOLOGY JW WALKER 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 B PG DATE: 2 2MHz, 3.5A MICROPOWER SYNCHRONOUS MONOLITHIC STEP-DOWN REGULATOR IC NO. LT8610ABEMSE SHEET 1 1 REV. 3 DEMO CIRCUIT 2012A Wednesday, September 25, 2013 A OF 1