5 4 3 2 1 REVISION HISTORY ECO REV __ 2 DESCRIPTION APPROVED DATE PRODUCTION WALKER B. 11-5-10 D D EN / UVLO 1 RFB 14 NC LT3511EMS SW 1 D5 CMHZ5236B 7 C3 47uF 10V 1210 VOUTE3 VOUT- C6 1000pF 2000V 1206 U1 7 6 VOUT+ E1 VOUT+ +5V@300mA Lp = 300uH D2 BAV21W R4 169K 5 8 1 EN/UVLO R5 31.6K 2 MMSZ5266BTIG D1 SBR140S3 2 1 2 2 D4 3 1 E5 3 1 E4 C2 1uF 100V 1206 + C5 10uF 100V R3 (OPT) 806K 0805 2 GND 4 E2 VIN VIN 36V - 75V T1 750311558 16 C C 11 BIAS TC R6 69.8K RREF 6 D3 1 2 R9 20 CMDSH-3 12 GND 9 GND GND 8 5 10 VC BIAS BIAS E6 R7 31.6K C7 (OPT) R8 10K C10 3300pF C9 4.7uF 16V 0805 B B NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE IN 0603. 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. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 APPROVALS PCB DES. TECHNOLOGY HZ APP ENG. WALKER B. 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 MONOLITHIC HIGH VOLTAGE ISOLATED FLYBACK CONVERTER SIZE N/A SCALE = NONE 2 IC NO. LT3511EMS DEMO CIRCUIT 1517A DATE: Thursday, November 18, 2010 SHEET 1 1 REV. 2 OF 1 A