5 4 3 2 1 D4 - 2 D 300uH 3 C12 1uF C2 400V 0.47uF ECWF4105JL 400V ECWF4474JL C6 R9 47 1206 12 D5 4.7nF 1 + 100V C10 100uF 450V R17 1M 1206 + 2 - 400V / 0.375A 4 D3 J2 CMR5H-06 L3 760802122 7 1 + B1 GBU404 3 1N4005 VREC 6 L4 7447060 D CMZ5934B R1 499k 1% 1206 C16 OPT R6 150k 1% 1206 C7 27pF D2 R13 R10 2k C4 C 3 4 2 1 R2 499k 1% 1206 R7 150k 1% 1206 1M 1206 1M 1206 C15 100pF R12 9.53k + L1 15mH B82734R2232B030 R16 BAV20W 10uF 50V 50YXJ10M 5X11 D1 C 16 0.22uF 275VAC R46KI322000M2K B 12 C13 1nF 75k 4 EN_UVLO VREF 9 14 INTVCC IPA50R190CE GND GND 2 3 R14 13 C8 4.7uF 16V 8 7 GND U1 GND LT8312EMS C9 100pF 50V 100 R15 0.015 1206 B VREC R20 R21 R22 OPT 1206 OPT 1206 OPT 1206 R23 R24 R25 OPT 1206 OPT 1206 OPT 1206 L N 6 J1 1% 15 GND VC 1 R5 24.9k 1% 0 1N4148W R11 10 OVP C3 100pF Q1 R19 D6 INTVCC F1 3.15A 2 GATE SENSE R4 11.8k 1% 5 1 FB R18 V1 MOV-10D471K VINSENSE 10 R8 2.4M 1% DCM R3 301k 1% VIN C1 11 1N4148W 90 - 265VAC C5 680nF R26 10k 1% 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only CUSTOMER NOTICE C14 4.7uF 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED TITLE: SCHEMATIC CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR BOUNDARY MODE TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A NOTES: UNLESS OTHERWISE SPECIFIED, 1. ALL CAPACITORS AND RESISTORS ARE 0805. SIZE N/A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 DATE: 2 IC NO. PFC CONTROLLER REV. LT8312EMS DEMO CIRCUIT 2104A 3 SHEET Tuesday, January 06, 2015 1 1 OF 1 A