Version 4 SHEET 1 1416 680 WIRE 640 -240 176 -240 WIRE 784 -240 704 -240 WIRE 80 -176 -16 -176 WIRE 176 -176 176 -240 WIRE 176 -176 80 -176 WIRE 256 -176 176 -176 WIRE 368 -176 336 -176 WIRE 464 -176 368 -176 WIRE 496 -176 464 -176 WIRE 608 -176 560 -176 WIRE 688 -176 608 -176 WIRE 816 -176 688 -176 WIRE 912 -176 816 -176 WIRE 1056 -176 1008 -176 WIRE 1168 -176 1056 -176 WIRE -16 -160 -16 -176 WIRE 608 -160 608 -176 WIRE 688 -160 688 -176 WIRE 816 -160 816 -176 WIRE 1056 -160 1056 -176 WIRE 1168 -160 1168 -176 WIRE 368 -112 368 -176 WIRE 464 -112 464 -176 WIRE 608 -80 608 -96 WIRE -16 -64 -16 -80 WIRE 1056 -64 1056 -96 WIRE 1168 -64 1168 -80 WIRE 80 -48 80 -176 WIRE 176 -48 176 -176 WIRE 272 -48 176 -48 WIRE 688 -48 688 -80 WIRE 688 -48 560 -48 WIRE 816 -48 816 -80 WIRE 928 -48 928 -128 WIRE 928 -48 816 -48 WIRE 80 48 80 32 WIRE 272 48 80 48 WIRE 784 48 784 -240 WIRE 784 48 560 48 WIRE 928 48 928 -48 WIRE 928 48 784 48 WIRE 80 64 80 48 WIRE 176 64 176 -48 WIRE 272 144 176 144 WIRE 688 144 560 144 WIRE 784 144 752 144 WIRE 80 160 80 144 WIRE 272 240 192 240 WIRE 608 240 560 240 WIRE 192 256 192 240 WIRE 608 256 608 240 WIRE 416 320 416 304 WIRE 192 352 192 336 WIRE 608 352 608 320 FLAG 608 -80 0 FLAG -16 -64 0 FLAG -16 -176 IN FLAG 416 320 0 FLAG 192 352 0 FLAG 608 352 0 FLAG 80 160 0 FLAG 784 144 0 FLAG 1056 -64 0 FLAG 1168 -64 0 FLAG 1168 -176 OUT SYMBOL PowerProducts\\LT3581 416 96 R0 SYMATTR InstName U1 SYMBOL voltage -16 -176 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL ind 240 -160 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1.5µ SYMATTR SpiceLine Rser=1.5m SYMBOL schottky 496 -160 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value 1N5818 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 592 -160 R0 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMATTR SpiceLine Rser=5m SYMBOL res 672 -176 R0 SYMATTR InstName R1 SYMATTR Value 130K SYMBOL res 800 -176 R0 SYMATTR InstName R2 SYMATTR Value 130K SYMBOL pmos 1008 -128 M270 WINDOW 0 55 45 VTop 2 WINDOW 3 -20 74 VLeft 2 SYMATTR InstName Q1 SYMATTR Value Si4427DY SYMBOL res 176 240 R0 SYMATTR InstName R3 SYMATTR Value 43.2K SYMBOL cap 592 256 R0 SYMATTR InstName C2 SYMATTR Value .02µ SYMBOL res 160 48 R0 SYMATTR InstName R4 SYMATTR Value 100K SYMBOL res 64 48 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL res 64 -64 R0 SYMATTR InstName R6 SYMATTR Value 18.7K SYMBOL cap 688 160 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -21 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 1000p SYMATTR SpiceLine Rser=10.5K Cpar=56p SYMBOL cap 1040 -160 R0 SYMATTR InstName C4 SYMATTR Value 4.7µ SYMATTR SpiceLine Rser=5m SYMBOL schottky 640 -224 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value MBR0520L SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1152 -176 R0 SYMATTR InstName Rload SYMATTR Value 14 TEXT 888 136 Left 2 !.tran 2m startup