5 4 3 2 1 L1 39uH HRPQA2050-39 CSW +VIN E5 +VOUT * J1 + * T1 2 R14 15 100K 14 6 SYNC 26 2 1 36 38 39 PGND PGND NC TEST1 34 37 TAO NC TAS ISENSEN TOS AOUT TBLNK SOUT SYNC INTVCC RT INTVCC NC 3 E2 + * CSYS 270uF 35V EEHZA1V271P J4 C2 4.7uF 25V 0805 COMP R10 * 10 D4 24 D -VOUT D2 E6 CSW BAV21W-TP * C6 250V 22 R12 100 21 15 RCS1 * BAT54A-7-F 16 20 32 FSW D3 R4 C9 680pF C0G R13 100 10 Q2 BAV21W-TP * R3 10K 30 C C5 0.1uF 5 D5 BAS516 FB R2 11 7 20K 2010 CO2 1210 OPT 4 13 C IVSEC PGND 12 ISENSEP 19 11 OVLO SS2 * 8 OUT U1 LT3753EFE 17 61.9K Q1 OC UVLO_VSEC GND R5 10 18 R6 * SS1 9 R7 TEST2 0805 * NC VIN R9 200K C7 2.2nF 250V 0805 CO1 10uF 50V 1210 12 7 E4 R11 Q3 FDMS86200DC FSW C4 1uF 100V 0805 X7S R8 Q4 FDMS86200DC * J3 D1 CMMR1U-02 8 5 J2 28 C8 OPT CIN1 CIN2 CIN3 CIN4 1210 NC D -VIN +VO1 E3 C3 0.1uF R1 C1 31.6K 0.1uF SGND GND CY1 2200pF E1 B * 250V 2220 B FOR ASSEMBLY VERSIONS +VIN +VOUT CIN1 - CIN4 C6 R5 R7 R8 RCS1 Q1 -A 36V - 72V 24V / 5A 4.7uF / 100V,X7S 47nF / 1206 28K 3.48K 4.22K 11m / Wide 1206 FDMS86200DC -B 18V - 36V 24V / 5A 10uF / 50V 150nF / 1210 40.2K 7.32K 8.66K 5m / 0815 -C 9V - 18V 24V / 4A 22uF / 25V 330nF / 1812 40.2K 16.2K 19.6K 3m / 0815 Q2 T1 Si7117DN G45R2-0808-S01-80R FDMS86101DC Si2337DS G45R2-0408-S01-25R BSC010N04LS SQ1421EEH G45R2-0208-S01-8R0 NOTE: UNLESS OTHERWISE SPECIFIED: ALL RESISTORS & CAPACITORS ARE 0603 . ALL RESISTORS ARE 1% RESISTORS. ALL CERAMIC CAPACITORS ARE X7R EVAL1: EFE PACKAGE (FE38 (31) ) BOARD SIZE: 2.30 BY 1.45 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 ISOLATED FORWARD DC/DC CONVERTER IN 1/8 BRICK SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only N/A DATE: IC NO. REV. LT3753EFE DEMO CIRCUIT 2324A SHEET Wednesday, April 20, 2016 1 4 1 OF 1 A