Version 4 SHEET 1 1912 680 WIRE 192 -192 48 -192 WIRE 224 -192 192 -192 WIRE 320 -192 304 -192 WIRE 448 -192 320 -192 WIRE 48 -176 48 -192 WIRE 448 -176 448 -192 WIRE 192 -144 192 -192 WIRE 320 -144 320 -192 WIRE 48 -80 48 -112 WIRE 112 -80 48 -80 WIRE 448 -80 448 -112 WIRE 448 -80 400 -80 WIRE 96 16 -16 16 WIRE 112 16 96 16 WIRE 592 16 400 16 WIRE 752 16 592 16 WIRE 880 16 752 16 WIRE 1008 16 880 16 WIRE -16 32 -16 16 WIRE 880 32 880 16 WIRE 1008 32 1008 16 WIRE 592 64 592 16 WIRE 752 64 752 16 WIRE 96 112 96 16 WIRE 112 112 96 112 WIRE 448 112 400 112 WIRE 560 112 512 112 WIRE -16 128 -16 112 WIRE 880 128 880 96 WIRE 1008 128 1008 112 WIRE 96 208 96 112 WIRE 112 208 96 208 WIRE 560 208 560 112 WIRE 560 208 400 208 WIRE 592 208 592 128 WIRE 592 208 560 208 WIRE 752 208 752 144 WIRE 752 208 592 208 WIRE 752 224 752 208 WIRE 112 304 -32 304 WIRE 432 304 400 304 WIRE 480 304 432 304 WIRE 480 320 480 304 WIRE 752 320 752 304 WIRE 16 400 0 400 WIRE 112 400 96 400 WIRE 432 400 432 304 WIRE 432 400 400 400 WIRE 480 400 480 384 WIRE 192 480 192 464 WIRE 320 480 320 464 WIRE -32 512 -32 304 WIRE 432 512 432 400 WIRE 432 512 -32 512 FLAG 192 480 0 FLAG 320 480 0 FLAG 0 400 0 FLAG 480 400 0 FLAG -16 128 0 FLAG -16 16 IN FLAG 752 320 0 FLAG 880 128 0 FLAG 1008 128 0 FLAG 1008 16 OUT SYMBOL res 112 384 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 47.5K SYMBOL cap 464 320 R0 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMBOL voltage -16 16 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL ind 208 -176 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 10µ SYMATTR SpiceLine Rser=5m SYMBOL cap 32 -176 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL cap 432 -176 R0 SYMATTR InstName C3 SYMATTR Value .1µ SYMBOL res 736 48 R0 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL res 736 208 R0 SYMATTR InstName R3 SYMATTR Value 249K SYMBOL cap 448 128 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -28 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 3300p SYMATTR SpiceLine Rser=137K SYMBOL cap 576 64 R0 WINDOW 39 24 77 Left 2 WINDOW 3 38 45 Left 2 SYMATTR SpiceLine Rser=15K SYMATTR Value 33p SYMATTR InstName C5 SYMBOL cap 864 32 R0 WINDOW 123 26 75 Left 2 WINDOW 3 37 42 Left 2 SYMATTR Value2 x2 SYMATTR Value 47µ SYMATTR InstName C6 SYMATTR SpiceLine V=10 Irms=10.206 Rser=0.005 Lser=0 mfg="KEMET" pn="C1210C226K8PAC" type="X5R" SYMBOL res 992 16 R0 SYMATTR InstName Rload SYMATTR Value 2.5 SYMBOL PowerProducts\\LTC3115-2 256 160 R0 SYMATTR InstName U1 TEXT 584 384 Left 2 !.tran 5m startup TEXT 560 480 Left 2 !.softstart .4 TEXT 384 520 Top 2 ;Using the LTspice built-in directive ".softstart", you can reduce the softstart\ntime of some products models' internal softstart. ".softstart .4" directs the\nmodel to execute its internal softstart in 40% of the true start-up time.