A NOTES: B C D E UNLESS OTHERWISE SPECIFIED 4 4 Vin VIN C1 150uF 6.3V SP + C3 10uF Cer 2 2 C2 1uF 6.3V D1 MBR0520LT1 R1 10 5% E1 3V-7Vin Gnd D2 MBR0520LT1 1 2 4 3 Vout1+ 3 4 E3 R7 1 7 8 R6 10K R8 14K 6 7 2 C13 4700pF 1 C12 820pF BG1 BG2 TG1 TG2 SW1 SW2 23 R4 10 22 PGND IMAX1 Q1A Si4922DY Burst 2 8 Cont. JP1 1 Gnd C17 1uF 6.3V 9 10 E6 11 12 C18 27pF 1.8V PWRGD1 PWRGD2 FAULT FCB RUN/SS1 COMP1 RUN/SS2 COMP2 SGND FB2 FB1 VCC U1 LTC1702ACGN C5 1uF 6.3V L2 1.5uH IHLP-2525CZ-01-1.5uH 4 Vout2+ 21 E4 20 19 + R9 1 R10 1.6K C14 4700pF C15 680pF R11 10K 18 C10 180uF 4V SP C11 1uF 6.3V R15 47K R17 10K Pwrgd1 16 Q2A Si4922DY Gnd E5 15 14 R12 4.75K 13 VIN C19 27pF R14 10K Pwrgd2 R16 68K C20 680pF 3 2 C16 1uF 6.3V 17 R13 8.06K VIN 2.5V @ 5A 1 1.8V @ 5A R5 1.2K VIN BOOST2 Q2B Si4922DY 3 3 C9 180uF 4V SP IMAX2 BOOST1 C7 1uF 6.3V 8 7 5 C8 + 1uF 6.3V PVCC R2 14K 24 6 5 R3 10 1 C6 1uF 6.3V 3 5 6 L1 1.5uH IHLP-2525CZ-01-1.5uH Q1B Si4922DY 1 E2 C4 1uF 6.3V E7 C21 3300pF Fault E8 E9 2 2 SD1 SD2 E10 E11 SGND PGND LINEAR TECHNOLOGY CORPORATION 1 1 1630 McCARTHY BLVD. MILPITAS, CA. 95035 408-432-1900 408-434-0507 FAX Title High Efficiency Dual Output Power Supply Size Document Number DEMO 473A Date: A B C D Wednesday, June 12, 2002 Rev A LTC1702ACGN Sheet E 1 of 1