5 4 3 2 1 REVISION HISTORY 1 D3 CMDSH-3 D 1 2 T1 2 REV DESCRIPTION DATE APPROVED 2 PRODUCTION 07/02/10 Zhongming Y. 1 2 6 5 D1 E5 3 VOUT+ 1 ECO UPS840 VIN 6 SHDN SHDN/UVLO SW SW R6 93.1k 1% R15 24.9k 1% B NC NC VC 15 16 C7 0.1uF GND 9 SS RREF 14 R10 10k 1% RILIM TEST 7 TC 13 8 RFB DFLZ5V6 5.6V E6 VOUT- VOUT- 750311675 D2 DFLS1100 3 C 4 OPTIONAL CIRCUIT R7 80.6k 1% 12 R9 28.7k 1% 8 R4 OPT 0805 2 NC E3 C C9 1uF 50V 0805 5 1 R3 357K 1% BIAS SUN ELECT. 50CE22BS U1 LT3575EFE R8 2k 1% 0805 7 3 C4 47uF 1210 10V D 1 C12 1uF 50V 0805 GND E2 GND C10 0.22uF 50V 0805 4 VIN VIN FB1 10 BEAD L1 R11 6.04k 1% C20 0.01uF 50V C13 10pF C19 4.7uF 50V 1210 C14 C8 100pF 10uH SUMIDA CDRH4D22/HP TAIYO YUDEN FB MJ3216HS800 11 17 22uF 50V 2 + C1 C2 4.7uF 50V 1210 VIN VIN 10V - 28V 2 D4 E1 VOUT+ +5V @1.4A, VIN > 10V +5V @2.0A, VIN > 20V + C5 22uF 50V SUN ELECT. 50CE22BS OPT B 1206 C11 2200pF CUSTOMER NOTICE NOTES: UNLESS OTHERWISE SPECIFIED, A 1. ALL CAPACITOR AND RESISTOR CASE SIZES ARE 0603. CONTRACT NO. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A APPROVALS CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; TECHNOLOGY HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. MI VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL ENG. Zhongming Y. TITLE: SCHEMATIC APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A ISOLATED MONOLITHIC FLYBACK CONVERTER SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only 4 3 N/A DATE: LT3575EFE DEMO CIRCUIT 1643A IC NO. Wednesday, July 14, 2010 2 SHEET 1 REV 1 2 OF 1