A B C D E NOTES: GND 4 VBAT E1 L2 15uH CDRH2D18/HP-150NC L1 15uH CDRH2D18/HP-150NC VIN 4 3V-10V 5 GND RUN/SS U1 LT3487EDD Off 2 E7 On 2 2 SWP VPOS 3 3.0V 45mA 90mA 3.6V 60mA 110mA 90mA A 10 E6 C10 0.1uF, 16V X5R GND 2 2 * OUTPUT CURRENTS IOUT1 IOUT2 VOUT1 = 15V VOUT2 = -8V 5V 9 C11 0.1uF X5R LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY VIN 3 C7 0.1uF, 16V X5R E8 Q1 2N7002 1 R3 100K 1 C6 10uF, 16V X5R 3 RUN FVP C5 10pF VOUT1 * FVN C9 27pF 1 JP1 Output 1 R1 549K 1% Exposed Pad Bottom Side 7 C8 10uF, 10V X5R 3 VIN CAP R2 324K 1% E5 VBAT 4 DN GND C4 0.1uF X5R 11 E4 8 3 C3 2.2uF, 25V X5R SWN L3 15uH CDRH2D18/HP-150NC VOUT2 * C2 Opt. C1 1uF X5R 6 E3 150mA B Customer Notice 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. C LINEAR TECHNOLOGY CORPORATION 1630 McCARTHY BLVD. MILPITAS, CA. 95035 408-432-1900 408-434-0507 FAX Title 1 Boost and Inverting DC/DC Converters Size Document Number Date: Friday, May 05, 2006 Demo Circuit 912A D Sheet Rev LT3487EDD 1 E of 1