Version 4 SHEET 1 1144 696 WIRE 128 -128 0 -128 WIRE 144 -128 128 -128 WIRE 256 -128 224 -128 WIRE 368 -128 256 -128 WIRE 0 -96 0 -128 WIRE 368 -96 368 -128 WIRE 128 -64 128 -128 WIRE 256 -64 256 -128 WIRE 0 0 0 -32 WIRE 48 0 0 0 WIRE 368 0 368 -32 WIRE 368 0 336 0 WIRE 0 96 -128 96 WIRE 48 96 0 96 WIRE 496 96 336 96 WIRE 608 96 496 96 WIRE 720 96 608 96 WIRE -128 112 -128 96 WIRE 608 112 608 96 WIRE 720 112 720 96 WIRE 496 144 496 96 WIRE 0 192 0 96 WIRE 48 192 0 192 WIRE 352 192 336 192 WIRE 432 192 416 192 WIRE -128 208 -128 192 WIRE 608 208 608 176 WIRE 720 208 720 192 WIRE 352 224 352 192 WIRE 352 224 32 224 WIRE 32 288 32 224 WIRE 48 288 32 288 WIRE 496 288 496 224 WIRE 496 288 336 288 WIRE 496 304 496 288 WIRE 0 384 0 192 WIRE 48 384 0 384 WIRE 496 400 496 384 WIRE -48 480 -64 480 WIRE 48 480 32 480 WIRE 384 480 336 480 WIRE 464 480 448 480 WIRE 144 560 144 544 WIRE 272 560 272 544 FLAG 272 560 0 FLAG 144 560 0 FLAG -128 208 0 FLAG -64 480 0 FLAG 432 192 0 FLAG 608 208 0 FLAG 720 208 0 FLAG 496 400 0 FLAG 464 480 0 FLAG 720 96 OUT FLAG -128 96 IN SYMBOL voltage -128 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 48 464 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 105K SYMBOL ind 128 -112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 3.3µ SYMATTR SpiceLine Rser=10m SYMBOL cap -16 -96 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap 352 -96 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL cap 592 112 R0 SYMATTR InstName C3 SYMATTR Value 150µ SYMATTR Value2 Rser=5m SYMBOL cap 416 176 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 1µ SYMBOL res 480 128 R0 SYMATTR InstName R2 SYMATTR Value 536K SYMBOL res 480 288 R0 SYMATTR InstName R3 SYMATTR Value 102K SYMBOL cap 448 464 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 123 57 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 680p SYMATTR Value2 Rser=78.7K SYMBOL res 704 96 R0 SYMATTR InstName Rload SYMATTR Value 1 SYMBOL LTC3119 192 240 R0 SYMATTR InstName U1 TEXT 568 496 Left 2 !.tran 7m startup TEXT 336 608 Top 2 ;Using the LTspice built-in directive ".softstart", you can reduce the softstart\ntime of some products models' internal softstart. ".softstart 0.1" directs the\nmodel to execute its internal softstart in 10% of the true start-up time. TEXT 568 560 Left 2 !.softstart 1