4 3 R4 C1 OPT 1210 OPT 2220 RL3720W 4 E3 PGND R5 0 R9 0 CO6 OPT 1210 R10 OPT CO4 100uF 6.3V 1210 CO3 100uF 6.3V 1210 CO2 100uF 6.3V 1210 E6 CO1 270uF 10V E7 PGND 14 AGND JP1 INTVCC 2 MODE CCM 3 6 7 ISN ISP BIAS 9 FLAG INTVCC VC C17 470nF 4 FLAG VC R21 118k R16 C11 2.2uF 0805 INTVEE 2 R14 OPT C8 OPT C12 OPT 1206 INTVCC 0 INTVCC E12 0 R19 100K IMON IMON E13 FLAG E14 B C15 4.7nF IMON 1 DCM E10 8 IMON C14 2.2uF 0805 EN/FBIN GND B FBX R18 GND R20 10K R13 60.4k 1 5 16 12 E9 10 INTVEE 21 EN/FBIN VIN 20 C10 OPT C13 4.7uF R17 12.7K 50V 1206 C9 OPT 13 BIAS RT VIN FBX CSN 18 0 CSP C 0 ISN RT R15 BG 15 0 11 U1 LT8710EFE C6 OPT C7 OPT ISP 0 E8 R12 C5 0.47uF 0805 BG TG R6 NG MODE 4 R7 R1 0.002 RL3720W CO5 OPT 1210 R11 OPT 1 2 3 1 2 3 4 NG VOUT -5V , 6A VOUT RL3720W 8 7 6 5 C R2 OPT MN1 FDMS86500L 8 7 6 5 MN2 OPT E5 R8 499 PG R24 OPT 1210 E4 EN/FBIN 3 MP1 FDD4141 C19 OPT 0805 1 CIN6 OPT 1210 R3 0.006 2 CIN5 OPT 1210 SS CIN4 10uF 50V 1210 OPT 3 CIN3 10uF 50V 1210 C20 1210 D D2 PMEG3005EJ SS CIN2 10uF 50V 1210 10uF 50V 4 MP2 OPT SYNC 330uF 35V 3 19 + CIN1 C4 1210 1 74485540220 Q2-G VIN E2 4 50V PG 1 E1 10uF 50V 10uF 17 VIN 4.5V - 28V C3 1210 L1B 2.2uH 74485540220 2 3 D 1 D1 PMEG4030EP 1 C2 1210 2 L1A 2.2uH + 5 C18 47nF R22 12.1K C16 100pF SYNC SYNC E11 R23 100K NOTE: UNLESS OTHERWISE SPECIFIED A 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. 1. ALL RESISTORS ARE 0603. ALL SMD CAPACITORS ARE 0603. TECHNOLOGY TITLE: SCHEMATIC SYNCHRONOUS INVERTING DC/DC CONVERTER 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. LT8710EFE DC2067A 4 SHEET Thursday, February 20, 2014 1 1 OF 1 A