Version 4
SHEET 1 920 680
WIRE -48 -304 -368 -304
WIRE -48 -288 -48 -304
WIRE 224 -256 0 -256
WIRE 256 -256 224 -256
WIRE 368 -256 336 -256
WIRE 432 -256 368 -256
WIRE 512 -256 432 -256
WIRE 0 -240 0 -256
WIRE 432 -240 432 -256
WIRE 512 -240 512 -256
WIRE -48 -192 -48 -208
WIRE -48 -192 -688 -192
WIRE -688 -176 -688 -192
WIRE -48 -176 -48 -192
WIRE -368 -144 -368 -304
WIRE 0 -144 0 -160
WIRE 48 -144 0 -144
WIRE 256 -144 48 -144
WIRE 368 -144 368 -256
WIRE 368 -144 336 -144
WIRE 432 -144 432 -176
WIRE 512 -144 512 -160
WIRE -688 -80 -688 -96
WIRE -48 -80 -48 -96
WIRE -48 -80 -144 -80
WIRE -416 -64 -576 -64
WIRE -144 -64 -144 -80
WIRE -368 -32 -368 -48
WIRE -192 16 -416 16
WIRE -416 32 -416 16
WIRE -144 48 -144 32
WIRE -576 80 -576 -64
WIRE -416 128 -416 112
WIRE -576 176 -576 160
WIRE 48 208 48 -144
WIRE -320 224 -448 224
WIRE -304 224 -320 224
WIRE -32 224 -48 224
WIRE -448 240 -448 224
WIRE -320 288 -320 224
WIRE -304 288 -320 288
WIRE 0 288 -48 288
WIRE 48 320 48 304
WIRE -448 336 -448 320
WIRE -304 352 -320 352
WIRE -32 352 -48 352
WIRE 224 400 224 -256
WIRE -304 416 -800 416
WIRE -32 416 -48 416
WIRE -800 432 -800 416
WIRE -304 480 -320 480
WIRE 176 480 -48 480
WIRE 224 512 224 496
WIRE -800 528 -800 512
WIRE -304 544 -320 544
WIRE -32 544 -48 544
WIRE -800 624 -800 608
FLAG -576 176 0
FLAG -416 128 0
FLAG -800 624 0
FLAG 224 512 0
FLAG 512 -144 0
FLAG 432 -144 0
FLAG 48 320 0
FLAG -144 48 0
FLAG -368 -32 0
FLAG -688 -80 0
FLAG -688 -192 IN
FLAG 512 -256 OUT
FLAG -32 224 0
FLAG -32 352 0
FLAG -32 416 0
FLAG -32 544 0
FLAG -320 352 0
FLAG -320 480 0
FLAG -320 544 0
FLAG -448 336 0
FLAG -448 224 Vcc
SYMBOL voltage -576 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 .1m 10n 10n 2u 8u)
SYMBOL voltage -416 16 R0
WINDOW 0 16 17 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 .104m 10n 10n 2u 8u)
SYMBOL voltage -800 624 M180
WINDOW 123 24 -26 Left 2
WINDOW 39 24 -5 Left 2
WINDOW 0 30 80 Left 2
WINDOW 3 27 17 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 .1021m 10n 10n 5.8u 8u)
SYMBOL voltage -800 416 R0
WINDOW 0 32 23 Left 2
WINDOW 123 24 146 Left 2
WINDOW 39 24 125 Left 2
WINDOW 3 44 91 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 5 .1061m 10n 10n 5.8u 8u)
SYMBOL nmos -192 -64 R0
WINDOW 3 55 65 Left 2
SYMATTR Value FDS8962C_N
SYMATTR InstName Q1
SYMBOL ind2 -64 -304 R0
WINDOW 0 -5 37 Right 2
WINDOW 3 -4 74 Right 2
SYMATTR InstName L1
SYMATTR Value .5m
SYMATTR Type ind
SYMATTR SpiceLine Rpar=1K
SYMBOL ind2 -64 -192 R0
WINDOW 0 -2 36 Right 2
WINDOW 3 -7 75 Right 2
SYMATTR InstName L2
SYMATTR Value .5m
SYMATTR Type ind
SYMATTR SpiceLine Rpar=1K
SYMBOL ind2 16 -256 M0
WINDOW 0 -4 38 Right 2
WINDOW 3 -4 71 Right 2
SYMATTR InstName L3
SYMATTR Value 1m
SYMATTR Type ind
SYMATTR SpiceLine Rpar=1K
SYMBOL ind 240 -240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 10µ
SYMBOL ind 240 -128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L5
SYMATTR Value 10µ
SYMBOL cap 416 -240 R0
SYMATTR InstName C1
SYMATTR Value 50µ
SYMATTR Value2 Rser=.1
SYMBOL res 496 -256 R0
SYMATTR InstName Rload
SYMATTR Value 3
SYMBOL voltage -688 -192 R0
WINDOW 3 26 92 Left 2
SYMATTR Value 12
SYMATTR InstName V5
SYMBOL PowerProducts\\LTC3901 -176 384 R0
SYMATTR InstName U1
SYMBOL voltage -448 224 R0
WINDOW 3 26 92 Left 2
SYMATTR Value 5
SYMATTR InstName V6
SYMBOL nmos -416 -144 R0
WINDOW 3 55 65 Left 2
SYMATTR Value FDS8962C_N
SYMATTR InstName Q2
SYMBOL nmos 0 208 R0
WINDOW 3 55 65 Left 2
SYMATTR Value FDS8962C_N
SYMATTR InstName Q3
SYMBOL nmos 176 400 R0
WINDOW 3 55 65 Left 2
SYMATTR Value FDS8962C_N
SYMATTR InstName Q4
TEXT 272 568 Left 2 !.tran .5m startup
TEXT -24 -288 Left 2 !K1 L1 L2 L3 1