Version 4
SHEET 1 4692 2996
WIRE 1312 1664 576 1664
WIRE 1680 1664 1312 1664
WIRE 2048 1664 1680 1664
WIRE 2464 1664 2048 1664
WIRE 1312 1680 1312 1664
WIRE 1680 1712 1680 1664
WIRE 2048 1712 2048 1664
WIRE 1312 1776 1312 1760
WIRE 1312 1776 1200 1776
WIRE 1424 1776 1312 1776
WIRE 1312 1808 1312 1776
WIRE 2048 1856 2048 1792
WIRE 2048 1856 1968 1856
WIRE 2704 1856 2048 1856
WIRE 1312 1936 1312 1888
WIRE 1424 1936 1312 1936
WIRE 576 1952 576 1664
WIRE 1904 2032 1904 2016
WIRE 1952 2032 1904 2032
WIRE 1200 2048 1200 1776
WIRE 1312 2048 1312 1936
WIRE 1616 2096 1616 2016
WIRE 1680 2096 1616 2096
WIRE 1760 2096 1760 2016
WIRE 1760 2096 1744 2096
WIRE 1776 2096 1760 2096
WIRE 1872 2096 1856 2096
WIRE 1952 2096 1952 2032
WIRE 1952 2096 1936 2096
WIRE 2464 2112 2464 1664
WIRE 2464 2112 2304 2112
WIRE 2544 2112 2464 2112
WIRE 2656 2112 2544 2112
WIRE 2656 2144 2656 2112
WIRE 1760 2160 1760 2096
WIRE 2304 2160 2304 2112
WIRE 2464 2160 2464 2112
WIRE 2704 2160 2704 1856
WIRE 2256 2176 2016 2176
WIRE 2016 2224 2016 2176
WIRE 2256 2272 2256 2224
WIRE 2304 2272 2304 2240
WIRE 2304 2272 2256 2272
WIRE 2464 2272 2464 2224
WIRE 2464 2272 2304 2272
WIRE 2544 2272 2464 2272
WIRE 2656 2272 2656 2224
WIRE 2656 2272 2544 2272
WIRE 2704 2272 2704 2208
WIRE 2704 2272 2656 2272
WIRE 1760 2288 1760 2240
WIRE 576 2336 576 2032
WIRE 1200 2336 1200 2112
WIRE 1200 2336 576 2336
WIRE 1312 2336 1312 2128
WIRE 1312 2336 1200 2336
WIRE 1472 2336 1472 2016
WIRE 1472 2336 1312 2336
WIRE 1520 2336 1472 2336
WIRE 1616 2336 1616 2096
WIRE 1616 2336 1600 2336
WIRE 1744 2336 1616 2336
WIRE 1952 2336 1952 2096
WIRE 1952 2336 1840 2336
WIRE 2016 2336 2016 2304
WIRE 2016 2336 1952 2336
WIRE 2464 2336 2464 2272
WIRE 2464 2336 2016 2336
WIRE 1472 2368 1472 2336
FLAG 1472 2368 0
FLAG 576 1664 IN
FLAG 2544 2112 OUT+
FLAG 2544 2272 OUT-
SYMBOL LT4250L 1680 1856 R0
SYMATTR InstName U1
SYMBOL res 1872 2080 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL cap 1936 2080 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 15n
SYMBOL res 1744 2144 R0
SYMATTR InstName R5
SYMATTR Value 10
SYMBOL cap 1744 2080 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 470n
SYMBOL nmos 1840 2288 R90
WINDOW 0 -9 62 VLeft 2
WINDOW 3 56 41 VTop 2
SYMATTR InstName M1
SYMATTR Value IRF530
SYMBOL res 1616 2320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 20m
SYMBOL res 1296 1792 R0
SYMATTR InstName R3
SYMATTR Value 6.49K
SYMBOL res 1296 1664 R0
SYMATTR InstName R4
SYMATTR Value 549K
SYMBOL cap 1184 2048 R0
SYMATTR InstName C1
SYMATTR Value 0.1µ
SYMBOL res 1296 2032 R0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL voltage 576 2048 M180
WINDOW 3 24 16 Left 2
WINDOW 39 24 -5 Left 2
WINDOW 0 24 96 Left 2
WINDOW 123 24 -26 Left 2
SYMATTR Value PWL(0 0 10m -48 220m -48 220.1m -70)
SYMATTR InstName V1
SYMBOL cap 2448 2160 R0
SYMATTR InstName C3
SYMATTR Value 100µ
SYMATTR SpiceLine Rser=25m
SYMBOL voltage 2016 2208 R0
SYMATTR InstName V3
SYMATTR Value PWL(0 0 360m 0 360.001m 1)
SYMBOL sw 2304 2256 M180
WINDOW 0 24 101 Left 2
WINDOW 3 18 17 Left 2
SYMATTR InstName S2
SYMATTR Value SoftShort
SYMBOL sw 2656 2240 R180
WINDOW 0 24 101 Left 2
WINDOW 3 18 17 Left 2
SYMATTR InstName Sload
SYMATTR Value Load
SYMBOL res 2032 1808 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 100K
TEXT 2512 2312 Left 2 !.tran 400m startup
TEXT 1936 2360 Left 2 !.model SoftShort SW(Ron=3 Roff=10G Vt=0.5 Vh=-0.1)
TEXT 1936 2392 Left 2 !.model Load SW(Ron=10G Roff=40 Vt=0.5 Vh=-0.1)