Version 4
SHEET 1 1128 680
WIRE -96 -80 -176 -80
WIRE 0 -80 -96 -80
WIRE 240 -80 0 -80
WIRE 400 -80 240 -80
WIRE 528 -80 480 -80
WIRE 544 -80 528 -80
WIRE 640 -80 608 -80
WIRE 720 -80 640 -80
WIRE 816 -80 784 -80
WIRE 864 -80 816 -80
WIRE 944 -80 864 -80
WIRE -176 -64 -176 -80
WIRE -96 -64 -96 -80
WIRE 864 -64 864 -80
WIRE 944 -64 944 -80
WIRE 640 -48 640 -80
WIRE 240 -32 240 -80
WIRE -176 32 -176 16
WIRE -96 32 -96 16
WIRE 80 32 -96 32
WIRE 416 32 400 32
WIRE 496 32 480 32
WIRE 864 32 864 0
WIRE 944 32 944 16
WIRE -96 48 -96 32
WIRE 0 48 0 -80
WIRE 640 64 640 32
WIRE 80 128 0 128
WIRE 528 128 528 -80
WIRE 528 128 400 128
WIRE -96 144 -96 128
WIRE 0 224 -32 224
WIRE 80 224 64 224
WIRE 816 224 816 -80
WIRE 816 224 400 224
WIRE -16 320 -32 320
WIRE 80 320 64 320
WIRE 816 320 816 304
WIRE 816 320 400 320
WIRE 816 336 816 320
WIRE -16 416 -32 416
WIRE 80 416 48 416
WIRE 416 416 400 416
WIRE 816 432 816 416
WIRE 240 496 240 480
FLAG 240 496 0
FLAG -32 416 0
FLAG -32 320 0
FLAG -32 224 0
FLAG 496 32 0
FLAG -176 32 0
FLAG -96 144 0
FLAG -176 -80 IN
FLAG 640 64 0
FLAG 816 432 0
FLAG 864 32 0
FLAG 944 32 0
FLAG 944 -80 OUT
FLAG 416 416 0
SYMBOL cap 48 400 R90
WINDOW 39 53 32 VTop 2
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR SpiceLine Rser=7.5K
SYMATTR InstName C1
SYMATTR Value 22n
SYMBOL res 80 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 27.4K
SYMBOL cap 64 208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .05µ
SYMBOL voltage -176 -80 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 416 48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 4.7µ
SYMBOL res -112 -80 R0
SYMATTR InstName R2
SYMATTR Value 124K
SYMBOL res -112 32 R0
SYMATTR InstName R3
SYMATTR Value 121K
SYMBOL res -16 32 R0
SYMATTR InstName R4
SYMATTR Value 150K
SYMBOL ind2 384 -64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 15µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=25m Cpar=50p
SYMBOL ind2 624 48 M180
WINDOW 0 36 80 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName L2
SYMATTR Value 15µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=25m Cpar=50p
SYMBOL cap 544 -64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 4.7µ
SYMATTR SpiceLine Rser=5m
SYMBOL schottky 720 -64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBRS360
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 800 208 R0
SYMATTR InstName R6
SYMATTR Value 105K
SYMBOL res 800 320 R0
SYMATTR InstName R7
SYMATTR Value 15.8K
SYMBOL res 928 -80 R0
SYMATTR InstName Rload
SYMATTR Value 8
SYMBOL PowerProducts\\LT3959 240 224 R0
SYMATTR InstName U1
SYMBOL cap 848 -64 R0
WINDOW 123 33 76 Left 2
WINDOW 3 31 52 Left 2
SYMATTR Value2 x2
SYMATTR Value 47µ
SYMATTR InstName C5
SYMATTR SpiceLine Rser=2m
TEXT 536 -128 Bottom 2 !K1 L1 L2 1
TEXT 680 488 Left 2 !.tran 4m startup