Version 4 SHEET 1 1208 768 WIRE 128 -96 0 -96 WIRE 144 -96 128 -96 WIRE 256 -96 224 -96 WIRE 368 -96 256 -96 WIRE 0 -64 0 -96 WIRE 368 -64 368 -96 WIRE 128 -32 128 -96 WIRE 256 -32 256 -96 WIRE 0 48 0 0 WIRE 48 48 0 48 WIRE 368 48 368 0 WIRE 368 48 336 48 WIRE 16 128 -112 128 WIRE 48 128 16 128 WIRE 464 128 336 128 WIRE 576 128 464 128 WIRE 688 128 576 128 WIRE -112 144 -112 128 WIRE 576 144 576 128 WIRE 688 144 688 128 WIRE 464 176 464 128 WIRE 16 208 16 128 WIRE 48 208 16 208 WIRE 352 208 336 208 WIRE -112 240 -112 224 WIRE 576 240 576 208 WIRE 688 240 688 224 WIRE 16 288 16 208 WIRE 48 288 16 288 WIRE 464 288 464 256 WIRE 464 288 336 288 WIRE 464 304 464 288 WIRE 48 368 16 368 WIRE -64 448 -80 448 WIRE 16 448 16 368 WIRE 16 448 0 448 WIRE 48 448 16 448 WIRE 368 448 336 448 WIRE 480 448 448 448 WIRE 560 448 544 448 WIRE 128 544 128 528 WIRE 256 544 256 528 FLAG 128 544 0 FLAG -112 240 0 FLAG 256 624 0 FLAG -80 448 0 FLAG 576 240 0 FLAG 688 240 0 FLAG 464 384 0 FLAG 560 448 0 FLAG 688 128 OUT FLAG -112 128 IN FLAG 352 208 0 SYMBOL voltage -112 128 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 240 528 R0 SYMATTR InstName R1 SYMATTR Value 105K SYMBOL ind 128 -80 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 -64 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap 352 -64 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL cap 560 144 R0 SYMATTR InstName C3 SYMATTR Value 150µ SYMATTR Value2 Rser=5m SYMBOL cap -64 464 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 1µ SYMBOL res 448 160 R0 SYMATTR InstName R2 SYMATTR Value 536K SYMBOL res 448 288 R0 SYMATTR InstName R3 SYMATTR Value 102K SYMBOL cap 480 464 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C5 SYMATTR Value 680p SYMBOL res 672 128 R0 SYMATTR InstName Rload SYMATTR Value 1 SYMBOL res 352 464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 78.7k SYMBOL LTC3119 192 240 R0 WINDOW 0 0 -48 Center 2 WINDOW 3 4 42 Center 2 SYMATTR InstName U1 TEXT -64 664 Left 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 568 616 Left 2 !.softstart .1 TEXT 568 584 Left 2 !.tran 1m startup