5 4 3 2 1 REVISION HISTORY ECO REV __ 2 VIN E2 GND C2 4.7uF 50V 1210 R2 OPT 0603 C12 1uF 50V 0805 SANYO 50CE22BS E3 7 SHDN SHDN/UVLO BIAS R6 93.1K RFB 6 R7 13 84.5K TC RILIM 1 3 8 9 16 17 12 R10 10K C7 0.1uF 1. ALL RESISTORS ARE IN OHMS, 0402 ALL CAPACITORS ARE IN MICROFARADS, 0402. VOUT- C OPTIONAL CIRCUIT 4 VIN TAIYO YUDEN FB MJ3216HS800 FB1 BEAD C20 0.01UF,50V 0603 SUMIDA CDRH4D22/HP L1 10UH C19 4.7UF,50V 1210 + VIN C5 22UF,50V SANYO 50CE22BS C14 0.033UF C11 C8 4700pF 100pF R11 6.04K C13 10PF C9 1uF 50V 0805 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 4 B 1206 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 E6 VOUT- D2 1N4148WS CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED E5 VOUT+ [email protected], VIN<20V [email protected], VIN>20V C4 47uF,10V 1210 8 R15 12.4K R9 20K 06-05-13 VOUT+ R4 499 0805 7 RREF SW SS B A 4 TEST VC 10 Zhongming Y. D 1 14 11 2 D3 CMDSH-3 1 2 GND GND GND GND GND GND 2 01-14-10 6 2 3 C 15 R8 2K 0805 U1 LT3573EMSE VIN R3 357K C10 0.22uF 25V 0603 5 TIGER Z. 1 22UF 50V 2 +C1 5 VIN 10V - 30V DATE D1 B340A D 1 APPROVED PRODUCTION CHANGED: C11,R15,R4 2-1 T1 WURTH, 750370047 E1 DESCRIPTION 3 TECHNOLOGY KT TIGER Z. TITLE: SCHEMATIC A ISOLATED MONOLITHIC FLYBACK CONVERTER SIZE IC NO. REV. LT3573EMSE N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: 2-1 DEMO CIRCUIT 1228A Wednesday, June 05, 2013 2 SHEET 1 1 OF 1