Version 4
SHEET 1 3212 1368
WIRE 1920 688 1600 688
WIRE 1984 688 1920 688
WIRE 2112 688 2048 688
WIRE 2272 688 2112 688
WIRE 2464 688 2272 688
WIRE 2640 688 2464 688
WIRE 2640 704 2640 688
WIRE 1600 736 1600 688
WIRE 2272 736 2272 688
WIRE 1920 784 1920 688
WIRE 2112 784 2112 688
WIRE 2464 784 2464 688
WIRE 2416 800 2384 800
WIRE 2640 800 2640 784
WIRE 1600 848 1600 800
WIRE 1808 848 1600 848
WIRE 2272 848 2272 800
WIRE 2272 848 2224 848
WIRE 2384 848 2384 800
WIRE 2384 848 2272 848
WIRE 2272 864 2272 848
WIRE 1600 880 1600 848
WIRE 1712 928 1696 928
WIRE 1808 928 1776 928
WIRE 2272 928 2224 928
WIRE 2464 928 2464 880
WIRE 2496 928 2464 928
WIRE 2592 928 2576 928
WIRE 2608 928 2592 928
WIRE 2704 928 2688 928
WIRE 2784 928 2704 928
WIRE 2784 944 2784 928
WIRE 1600 960 1600 944
WIRE 1808 1008 1776 1008
WIRE 2272 1008 2224 1008
WIRE 2592 1008 2592 928
WIRE 2592 1008 2272 1008
WIRE 2784 1040 2784 1024
WIRE 1632 1088 1616 1088
WIRE 1712 1088 1696 1088
WIRE 1808 1088 1792 1088
WIRE 2272 1088 2272 1072
WIRE 2272 1088 2224 1088
WIRE 2704 1088 2704 928
WIRE 2704 1088 2272 1088
WIRE 2704 1104 2704 1088
WIRE 2464 1120 2464 928
WIRE 2528 1120 2464 1120
WIRE 2464 1136 2464 1120
WIRE 2528 1152 2528 1120
WIRE 1696 1168 1680 1168
WIRE 1808 1168 1760 1168
WIRE 2384 1168 2224 1168
WIRE 2704 1184 2704 1168
WIRE 2384 1216 2384 1168
WIRE 2416 1216 2384 1216
WIRE 1888 1248 1888 1232
WIRE 2016 1248 2016 1232
WIRE 2144 1248 2144 1232
WIRE 2464 1248 2464 1232
WIRE 2528 1248 2528 1216
FLAG 2640 800 0
FLAG 2464 1248 0
FLAG 2144 1248 0
FLAG 2016 1248 0
FLAG 1888 1248 0
FLAG 1696 928 0
FLAG 1616 1088 0
FLAG 1600 960 0
FLAG 2528 1248 0
FLAG 2704 1184 0
FLAG 2784 1040 0
FLAG 2784 928 OUT
FLAG 1680 1168 0
FLAG 2640 688 IN
SYMBOL VOLTAGE 2640 688 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL NMOS 2416 1136 R0
WINDOW 0 28 -8 Right 2
WINDOW 3 33 101 Right 2
SYMATTR InstName Q1
SYMATTR Value FDS5690
SYMBOL PMOS 2416 880 M180
WINDOW 0 56 72 Left 2
WINDOW 3 56 20 Left 2
SYMATTR InstName Q2
SYMATTR Value IRF7343P
SYMBOL cap 1776 912 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 470p
SYMBOL cap 1696 1072 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 3300p
SYMBOL polcap 1584 880 R0
WINDOW 3 24 58 Left 2
SYMATTR Value 3.3µ
SYMATTR InstName C3
SYMBOL cap 1584 736 R0
SYMATTR InstName C4
SYMATTR Value .068µ
SYMBOL diode 1984 704 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 2256 800 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL ind 2480 944 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 62µ
SYMBOL cap 2256 1008 R0
WINDOW 0 33 17 Left 2
WINDOW 3 27 55 Left 2
SYMATTR InstName C5
SYMATTR Value 1000p
SYMBOL cap 2256 864 R0
WINDOW 0 29 10 Left 2
WINDOW 3 30 53 Left 2
SYMATTR InstName C6
SYMATTR Value .047µ
SYMBOL schottky 2512 1216 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value MBRS360
SYMBOL polcap 2688 1104 R0
SYMATTR InstName C7
SYMATTR Value 220µ
SYMATTR SpiceLine Rser=.01
SYMBOL RES 1808 1072 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res 2592 944 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 50m
SYMBOL PowerProducts\\LTC1149-3.3 2016 1008 R0
SYMATTR InstName U1
SYMBOL cap 1760 1152 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 100p
SYMBOL res 2768 928 R0
SYMATTR InstName Rload
SYMATTR Value 3
TEXT 2512 1304 Left 2 !.tran 9m startup