B A L1 VIN * L2 1 5 SHDN 4 3 2 SHDN FB * D2 R2 * 0603 * C5 0.1uF 16V 0603 C4 4.7uF 16V 1206 1 2 R5 U1 LT8580EDD 0603 * C6 0.1uF VOUT 2 GND SS RT 9 SYNC R4 SYNC 10K E6 0805 R8 100K VC 6 8 SYNC E2 * E4 0 0805 * * SW 2 VOUT 0805 C11 4.7uF 16V 1206 VIN *0805 C1 VOUT R11 2 D1 R1 0 0805 R12 SHDN VB 1 E1 7 VIN SW * R6 56.2K 0603 C8 47pF C7 * 0603 GND GND E5 E3 OPTIONAL CIRCUIT SW NOTE: UNLESS OTHERWISE SPECIFIED R9 C9 OPT 0805 OPT 0805 1 VOUT 2 2 1 D4 OPT 1 1. ALL RESISTORS ARE 0402. ALL CAPACITORS ARE 0402. VERSION TABLE D3 OPT VB C10 OPT 1206 R10 OPT 0805 * L1 ASSEMBLY TYPE VIN VOUT D1 D2 C1 DC2186A-A 3V - 10V 12V / 120mA - 450mA DFLS130L NOT USED NOT USED 3.3nF SD18-150-R DC2186A-B 5V - 12V -12V / 150mA - 230mA NOT USED DFLS130L 1uF, 25V 2.2nF SD18-330-R C7 R2 R5 R12 NOT USED 130K 6.04K 11.3K SD18-330-R 143K 20K 22.1K L2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; TECHNOLOGY HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL TITLE: SCHEMATIC APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT BOOST/SEPIC/ INVERTING PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. B 1 IC NO. REV. LT8580EDD DEMO CIRCUIT 2186A N/A DATE: REGULATOR Thursday, June 26, 2014 A 2 SHEET 1 OF 1