Version 4
SHEET 1 2312 928
WIRE 144 -48 -160 -48
WIRE 368 -48 144 -48
WIRE -160 -32 -160 -48
WIRE 560 -32 48 -32
WIRE 768 -32 560 -32
WIRE 560 -16 560 -32
WIRE 768 -16 768 -32
WIRE 48 0 48 -32
WIRE 144 0 144 -48
WIRE -160 48 -160 32
WIRE -48 64 -128 64
WIRE 512 64 336 64
WIRE -128 80 -128 64
WIRE 368 80 368 -48
WIRE 768 80 768 64
WIRE 368 160 368 144
WIRE 368 160 336 160
WIRE 496 160 368 160
WIRE 560 160 560 80
WIRE -128 176 -128 160
WIRE 560 256 560 160
WIRE 560 256 336 256
WIRE 624 256 560 256
WIRE 736 256 704 256
WIRE 752 256 736 256
WIRE 848 256 832 256
WIRE 896 256 848 256
WIRE 944 256 896 256
WIRE 1104 256 944 256
WIRE 560 272 560 256
WIRE 944 272 944 256
WIRE 1104 272 1104 256
WIRE -144 352 -160 352
WIRE -48 352 -64 352
WIRE 512 352 336 352
WIRE 944 368 944 336
WIRE 1104 368 1104 352
WIRE 560 384 560 368
WIRE 736 448 736 256
WIRE 736 448 336 448
WIRE -128 544 -160 544
WIRE -48 544 -64 544
WIRE 848 544 848 256
WIRE 848 544 336 544
WIRE 896 544 896 256
WIRE -144 640 -160 640
WIRE -48 640 -80 640
WIRE 896 640 896 624
WIRE 896 640 336 640
WIRE 896 656 896 640
WIRE 64 720 64 704
WIRE 224 720 224 704
WIRE 896 752 896 736
FLAG 560 384 0
FLAG 944 368 0
FLAG 1104 368 0
FLAG 896 752 0
FLAG 1104 256 OUT
FLAG -160 48 0
FLAG -160 640 0
FLAG -160 544 0
FLAG 768 80 0
FLAG 768 -32 IN
FLAG 64 720 0
FLAG 224 720 0
FLAG -160 352 0
FLAG -128 176 0
SYMBOL nmos 512 -16 R0
SYMATTR InstName Q1
SYMATTR Value RJK0305DPB
SYMBOL ind 608 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 4.7µ
SYMATTR SpiceLine Rser=1.5m
SYMBOL cap 928 272 R0
WINDOW 39 27 58 Left 2
WINDOW 3 37 34 Left 2
SYMATTR SpiceLine Rser=5m
SYMATTR Value 150µ
SYMATTR InstName C1
SYMBOL res 880 528 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 880 640 R0
SYMATTR InstName R2
SYMATTR Value 31.6K
SYMBOL cap 496 176 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value .1µ
SYMBOL cap -176 -32 R0
SYMATTR InstName C3
SYMATTR Value 4.7µ
SYMBOL cap -80 624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 53 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 2200p
SYMATTR SpiceLine Rser=10K
SYMBOL cap -64 528 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value .01µ
SYMBOL voltage 768 -32 R0
WINDOW 3 20 93 Left 2
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL schottky 352 80 R0
WINDOW 3 20 64 Left 2
WINDOW 0 21 2 Left 2
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 512 272 R0
SYMATTR InstName Q2
SYMATTR Value RJK0301DPB
SYMBOL res 1088 256 R0
SYMATTR InstName Rload
SYMATTR Value .66
SYMBOL PowerProducts\\LTC3891 144 352 R0
SYMATTR InstName U1
SYMBOL res 736 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 8m
SYMBOL res -48 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 41.2K
SYMBOL voltage -128 64 R0
WINDOW 3 20 93 Left 2
SYMATTR Value 3.3
SYMATTR InstName V2
TEXT 1008 664 Left 2 !.tran 1m startup