5 D * VEMI 5.5V - 42V GND E10 FB1 E1 E2 C11 0.1uF 50V C12 0.1uF 50V C15 0.1uF 50V C16 0.1uF 50V 3 SYNC C C3 4.7uF 50V 1206 C10 4.7uF 50V 1206 C20 4.7uF 50V 1206 C18 4.7uF 50V 1206 D + C1 22uF 63V SUNCON 63CE22BS C2 4.7uF 50V 1206 C19 4.7uF 50V 1206 C13 0.1uF 50V R1 1M C17 0.1uF 50V R6 OPT U1 LT8610AEMSE 5 4 E6 E5 1 3 2 1 SYNC GND 13 JP1 GND 1 L2 4.7uH 6 EN/UV 2 2 C7 1uF 10V 3 R2 18.2k (2MHz) 0603 E9 7 8 E7 C8 0.1uF B BST 12 C4 0.1uF 10V VIN EN/UV SW SYNC SW INTVCC SW TR/SS BIAS RT PG NC FB GND L1 2.2uH 9 VOUT E3 XAL5030-222MEC 10 C6 47uF 10V 1210 11 VOUT 5V / 3.5A C9 1uF 16V 0805 C GND E4 14 R3 15 49.9k R4 16 R5 243k 17 TR/SS VIN GND * VIN 5.5V - 42V 4 1Meg C5 4.7pF CUSTOMER NOTICE NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. * REFER TO THE DEMO MANUAL FOR VIN RANGE. A 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 TECHNOLOGY B PG E8 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 DATE: 2 2MHz, 3.5A MICROPOWER SYNCHRONOUS MONOLITHIC STEP-DOWN REGULATOR IC NO. REV. LT8610AEMSE 2 DEMO CIRCUIT 2139A SHEET Tuesday, May 06, 2014 1 1 OF 1 A