5 D 4 3 1 D1 SBR1045D1 VIN 18V - 72V E1 Z1 SMBJ51A R1 402k 1 R2 32.4k SW GND E2 R3 100 2515 4 E3 3 C5 100uF 6.3V 1210 9 10 C6 100uF 6.3V 1210 C7 100uF 6.3V 1210 Z2 CMHZ5232B D VOUT+ 5V * C8 100uF 6.3V 1210 VOUT- R4 309k 0805 E4 C GND 80HVH18M RREF 7 R5 100K C3 1uF 25V 1206 GND INTVcc TC R6 10K 8 C9 9 2 6 3 * SEE DEMO MANUAL 6 7 5 EN/UVLO RFB 4 1 T1 750315125 5 D2 CMMR1U-02 U1 LT8304ES8E C2 4.7uF 100V 1210 C4 270pF 0805 3 18uF 80V C1 4.7uF 100V 1210 VIN + CIN C 2 4.7nF 250V 1812 B B NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE 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 TECHNOLOGY TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 N/A DATE: 2 IC NO. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only A MICROPOWER NO-OPTO ISOLATED FLYBACK CONVERTER REV. LT8304ES8E DEMO CIRCUIT 2393A 2 SHEET Friday, April 08, 2016 1 1 OF 1