B A L1 VIN 5V - 10V D1 DFLS130 * 1 2 VOUT C1 4.7uF 16V 0805 R2 11.3K 0805 R7 130K 0603 SHDN 5 SHDN 1 2 R6 6.19K 0603 9 RT 6 SS C2 0.1uF C5 0.1uF 16V 0603 C6 16V 0805 GND VC 7 SYNC 8 2 * FB E2 R3 10K SYNC SYNC 0805 E6 R4 100K 0805 * U1 SW VIN 4 3 2 SHDN * E4 E1 R5 56.2K 0603 C3 2.2nF C4 47pF GND GND E5 E3 VERSION TABLE * ASSEMBLY TYPE U1 C6 L1 VOUT DC2297A-A LT8570EDD 4.7uF 33uH 12V / 125mA DC2297A-B LT8570-1EDD 2.2uF 68uH 12V / 60mA 1 1 CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. 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. TITLE: SCHEMATIC BOOST REGULATOR SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. B TECHNOLOGY 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: IC NO. REV. LT8570EDD/LT8570-1EDD DEMO CIRCUIT 2297A Thursday, November 13, 2014 A SHEET 1 1 OF 1