5 4 3 2 1 CAUTION: HANDLING HIGH VOLTAGE INVOLVES RISK TO LIFE. COMPLY WITH SAFETY REGULATIONS! D D C2 0.22uF 400V FILM R5 68 R3 100k 1% C21 22pF R10 499k 1% 90 - 265VAC R1 100k 1% 1206 1206 L R11 499k 1% 2 R2 100k 1% 1206 C BAV20W R4 5.49K 1% R7 33K C12 22pF D1 C3 R9 510 1210 1 C24 47pF 630V 1206 2 V1 D5 SBR20A200CTB 9 3 8 4 6 10uF 50V D8 C23 C25 10uF 35V 1210 + C10 1000uF 35V + C11 1000uF 35V R27 510 1210 J2 1 + 2 R28 510 1210 10 CMR1U-10M - 24V / 2A 11 C 5 R23 R35 301k 1% 2.4M 1% 16 VINSENSE 10 R36 VIN F1 250V, 3.15A INTVCC 11 1N4148 VDRS10P320BSE DCM 1 N D2 C13 2.2nF 1210 + J1 R32 51K 1210 T1 750811248 FB 9 OPT 12 L2 27mH B82731H2701A030 2 4 1 3 R18 10k 1% 4 R19 40.2k 1% 3 CAC1 0.1uF 2 GATE SENSE INTVCC CTRL2 COMP- 2 1 Q1 IPB60R165CP 15 INTVCC CTRL3 COMP+ L1 1mH R25 14 20 1% VREF R20 31.6k B 275VAC EN_UVLO 13 R8 0.03 1206 C20 2200pF C8 4.7uF 16V 0805 8 Y1 B C6 0.1uF 50V 7 CTRL1 2 1 R38 24.9k GND LT3798EMSE 17 VC B1 HD06 OVP 6 4 1 U1 5 R37 0 - + 3 C7 2.2uF CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; TECHNOLOGY HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL 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 NOTES: UNLESS OTHERWISE SPECIFIED, 1. ALL CAPACITORS AND RESISTORS ARE 0805. SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 N/A DATE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only ISOLATED NO OPTO-COUPLER FLYBACK CONTROLLER WITH ACTIVE PFC IC NO. REV. LT3798EMSE 1 DC1817B SHEET Wednesday, October 01, 2014 1 1 OF 1 A