Version 4
SHEET 1 4392 1408
WIRE 2592 656 2272 656
WIRE 2896 656 2592 656
WIRE 3536 656 2896 656
WIRE 3776 656 3536 656
WIRE 2272 672 2272 656
WIRE 2592 704 2592 656
WIRE 2672 720 2640 720
WIRE 2896 720 2896 656
WIRE 3056 720 3056 688
WIRE 3376 720 3376 688
WIRE 3536 720 3536 656
WIRE 3776 720 3776 656
WIRE 3728 736 3696 736
WIRE 2272 768 2272 752
WIRE 2672 800 2672 720
WIRE 2816 800 2672 800
WIRE 3696 800 3696 736
WIRE 3696 800 3616 800
WIRE 2384 832 2368 832
WIRE 2480 832 2464 832
WIRE 2496 832 2480 832
WIRE 2592 832 2592 800
WIRE 2592 832 2576 832
WIRE 3776 832 3776 816
WIRE 3808 832 3776 832
WIRE 3904 832 3888 832
WIRE 3936 832 3904 832
WIRE 4048 832 4016 832
WIRE 2480 880 2480 832
WIRE 2736 880 2480 880
WIRE 2816 880 2736 880
WIRE 3648 880 3616 880
WIRE 3904 880 3904 832
WIRE 3904 880 3648 880
WIRE 2368 960 2368 832
WIRE 2368 960 2240 960
WIRE 2736 960 2736 944
WIRE 2736 960 2368 960
WIRE 2816 960 2736 960
WIRE 3648 960 3648 944
WIRE 3648 960 3616 960
WIRE 4048 960 4048 832
WIRE 4048 960 3648 960
WIRE 4176 960 4048 960
WIRE 2240 976 2240 960
WIRE 2368 976 2368 960
WIRE 2592 976 2592 832
WIRE 2592 976 2480 976
WIRE 3776 976 3776 832
WIRE 3920 976 3776 976
WIRE 4048 976 4048 960
WIRE 4176 976 4176 960
WIRE 2480 1008 2480 976
WIRE 3920 1008 3920 976
WIRE 2816 1040 2672 1040
WIRE 3696 1040 3616 1040
WIRE 2672 1056 2672 1040
WIRE 2672 1056 2640 1056
WIRE 3696 1056 3696 1040
WIRE 3728 1056 3696 1056
WIRE 2240 1072 2240 1056
WIRE 2368 1072 2368 1040
WIRE 4048 1072 4048 1040
WIRE 4176 1072 4176 1056
WIRE 2480 1088 2480 1072
WIRE 2592 1088 2592 1072
WIRE 3776 1088 3776 1072
WIRE 3920 1088 3920 1072
WIRE 2720 1120 2704 1120
WIRE 2816 1120 2800 1120
WIRE 3632 1120 3616 1120
WIRE 3728 1120 3712 1120
WIRE 3728 1136 3728 1120
WIRE 2704 1152 2704 1120
WIRE 2896 1216 2896 1200
WIRE 3040 1216 3040 1200
WIRE 3168 1216 3168 1200
WIRE 3264 1216 3264 1200
WIRE 3728 1216 3728 1200
WIRE 2704 1232 2704 1216
WIRE 3392 1232 3392 1200
WIRE 3536 1232 3536 1200
WIRE 3168 1296 3168 1280
WIRE 3264 1296 3264 1280
FLAG 3728 1216 0
FLAG 3536 1232 0
FLAG 3392 1232 0
FLAG 3264 1296 0
FLAG 3168 1296 0
FLAG 3040 1216 0
FLAG 2896 1216 0
FLAG 2704 1232 0
FLAG 4048 1072 0
FLAG 3776 1088 0
FLAG 3920 1088 0
FLAG 2368 1072 0
FLAG 2592 1088 0
FLAG 2480 1088 0
FLAG 4176 1072 0
FLAG 2240 1072 0
FLAG 2240 960 +3.3
FLAG 4176 960 +5
FLAG 2272 768 0
FLAG 2272 656 IN
SYMBOL POWERPRODUCTS\\LTC1142 3216 960 R0
SYMATTR InstName U1
SYMBOL RES 2816 1104 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL cap 2688 1152 R0
SYMATTR InstName C1
SYMATTR Value 3300p
SYMBOL cap 3248 1216 R0
SYMATTR InstName C2
SYMATTR Value 390p
SYMBOL cap 3152 1216 R0
SYMATTR InstName C3
SYMATTR Value 590p
SYMBOL res 3728 1104 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL cap 3712 1136 R0
SYMATTR InstName C4
SYMATTR Value 3300p
SYMBOL NMOS 3728 976 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL cap 3632 880 R0
WINDOW 0 32 19 Left 2
WINDOW 3 25 56 Left 2
SYMATTR InstName C5
SYMATTR Value 1000p
SYMBOL ind 3792 848 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 50µ
SYMBOL res 3920 816 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 50m
SYMBOL polcap 4032 976 R0
WINDOW 40 25 64 Left 2
WINDOW 3 39 36 Left 2
SYMATTR SpiceLine2 x2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName C6
SYMATTR Value 220µ
SYMBOL schottky 3904 1072 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL NMOS 2640 976 M0
WINDOW 0 32 -6 Right 2
WINDOW 3 33 101 Right 2
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL PMOS 2640 800 R180
WINDOW 0 38 114 Right 2
WINDOW 3 31 -23 Right 2
SYMATTR InstName Q3
SYMATTR Value FDC638P
SYMBOL ind 2592 848 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 50µ
SYMBOL res 2480 816 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 50m
SYMBOL polcap 2352 976 R0
WINDOW 40 25 61 Left 2
WINDOW 3 37 35 Left 2
SYMATTR SpiceLine2 x2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName C7
SYMATTR Value 220µ
SYMBOL schottky 2464 1072 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL cap 2720 880 R0
WINDOW 0 31 17 Left 2
SYMATTR InstName C8
SYMATTR Value 1000p
SYMBOL res 4160 960 R0
SYMATTR InstName Rload2
SYMATTR Value 10
SYMBOL res 2224 960 R0
SYMATTR InstName Rload1
SYMATTR Value 10
SYMBOL VOLTAGE 2272 656 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL PMOS 3728 816 M180
WINDOW 0 56 92 Left 2
WINDOW 3 60 56 Left 2
SYMATTR InstName Q4
SYMATTR Value FDC638P
TEXT 3888 1192 Left 2 !.tran 1.5m startup