Version 4
SHEET 1 880 692
WIRE -304 -64 -384 -64
WIRE -208 -64 -304 -64
WIRE 160 -64 -208 -64
WIRE 304 -64 160 -64
WIRE 432 -64 384 -64
WIRE 464 -64 432 -64
WIRE 560 -64 528 -64
WIRE 624 -64 560 -64
WIRE 688 -64 624 -64
WIRE -384 -48 -384 -64
WIRE 560 -48 560 -64
WIRE 688 -48 688 -64
WIRE -112 0 -128 0
WIRE -16 0 -32 0
WIRE 192 0 -16 0
WIRE 336 0 272 0
WIRE 368 0 336 0
WIRE 368 16 368 0
WIRE -384 48 -384 32
WIRE 160 48 160 -64
WIRE 560 48 560 16
WIRE 688 48 688 32
WIRE -208 80 -208 -64
WIRE -16 96 -16 0
WIRE 0 96 -16 96
WIRE 336 96 336 0
WIRE 336 96 320 96
WIRE 368 96 368 80
WIRE 432 112 432 -64
WIRE -208 192 -208 160
WIRE 0 192 -208 192
WIRE 384 192 320 192
WIRE -208 208 -208 192
WIRE 528 208 432 208
WIRE 528 256 528 208
WIRE 0 288 -144 288
WIRE 432 288 320 288
WIRE -208 304 -208 288
WIRE 432 304 432 288
WIRE -304 384 -304 -64
WIRE -96 384 -112 384
WIRE 0 384 -16 384
WIRE 528 384 528 336
WIRE 528 384 320 384
WIRE -144 432 -144 288
WIRE -144 432 -176 432
WIRE 160 448 160 432
WIRE -608 496 -624 496
WIRE -528 496 -544 496
WIRE -432 496 -448 496
WIRE 528 496 528 384
WIRE 528 496 -176 496
WIRE -96 560 -176 560
WIRE -16 560 -96 560
WIRE 624 560 624 -64
WIRE 624 560 64 560
WIRE -96 576 -96 560
WIRE -304 624 -304 608
WIRE -96 672 -96 656
FLAG 432 304 0
FLAG 160 448 0
FLAG -112 384 0
FLAG -128 0 0
FLAG 368 96 0
FLAG -208 304 0
FLAG 560 48 0
FLAG -384 48 0
FLAG -304 624 0
FLAG -96 672 0
FLAG -624 496 0
FLAG 688 48 0
FLAG 688 -64 OUT
FLAG -384 -64 IN
SYMBOL PowerProducts\\LTC4441 160 240 R0
SYMATTR InstName U1
SYMBOL nmos 384 112 R0
SYMATTR InstName Q1
SYMATTR Value Si7370DP
SYMBOL res 416 192 R0
SYMATTR InstName R1
SYMATTR Value 5m
SYMBOL res 0 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL res -16 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 86.6K
SYMBOL res 288 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 330K
SYMBOL cap 352 16 R0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL res -224 64 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL res -224 192 R0
SYMATTR InstName R6
SYMATTR Value 20K
SYMBOL ind 288 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µ
SYMATTR SpiceLine Rpar=2K
SYMBOL schottky 464 -48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBR745
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 544 -48 R0
SYMATTR InstName C2
SYMATTR Value 25µ
SYMBOL PowerProducts\\LTC3803 -304 496 R0
SYMATTR InstName U2
SYMBOL res 512 240 R0
SYMATTR InstName R7
SYMATTR Value 250
SYMBOL voltage -384 -64 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL res -112 560 R0
SYMATTR InstName R8
SYMATTR Value 10K
SYMBOL res 80 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 300K
SYMBOL cap -544 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .0047µ
SYMBOL res -432 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 56K
SYMBOL res 672 -64 R0
SYMATTR InstName Rload
SYMATTR Value 100
TEXT 352 608 Left 2 !.tran 4m startup