5 2 E2 1 U1 LT1930ES5 E3 4 SHDN FB C3 10pF 0402 C4 4.7uF 16V 1206 ECO REV 1 1 VOUT 12V@300mA DESCRIPTION APPROVED DATE JESUS R. 01-28-10 PRODUCTION C5 1uF 16V D R2 13.3K 2 E4 1 3 GND SHDN R1 115K 1 C2 2.2uF 16V 1206 SW C1 1uF 16V OFF HD1X3-079 5 ON 1 2 3 2 REVISION HISTORY CR43-100 JP1 D 3 D1 B0530W L1 10uH E1 VIN VIN 5V 4 GND VIN 10V - 16V 3 D2 B0530W 2 E6 1 R7 100K E7 4 SHDN R8 100K R3 115K C9 10pF 0402 CLS62-100 C10 4.7uF 16V 1206 C11 1uF 16V C 3 R4 13.3K 2 E8 FB GND SHDN L2A 10uH 4 C8 2.2uF 16V 1206 1 C7 1uF 16V OFF HD1X3-079 U2 LT1930ES5 SW 1 2 3 5 JP2 VOUT 12V@300mA 1 CLS62-100 ON C C6 1uF 16V 2 VIN BOOST L2B 10uH E5 GND 3 CLS62-100 4 SHDN NFB VOUT -12V@350mA 2 CLS62-100 D3 B0530W R5 110K C15 OPT 0402 C16 4.7uF 16V 1206 C17 1uF 16V B 3 R6 13.3K 2 R10 100K SW E11 SEPIC E10 4 1 C14 4.7uF 16V 1206 SHDN E12 U3 LT1931ES5 1 C13 1uF 16V OFF HD1X3-079 1 1206 GND B 1 2 3 5 JP3 ON R9 100K L3A 10uH C12 1uF 25V 2 VIN VIN 12V L3B 10uH E9 GND INVERTER CUSTOMER NOTICE 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. NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0805. APPROVALS PCB DES. KT APP ENG. JESUS R. 5 4 3 TITLE: SCHEMATIC 1.2MHz, SOT-23 DC/DC CONVERTER SIZE 2. INSTALL SHUNTS AS SHOWN. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only IC NO. N/A SCALE = NONE DATE: Thursday, January 28, 2010 2 REV. LT1930ES5 - LT1931ES5 DEMO CIRCUIT 383B SHEET 1 1 1 OF 1 A