Version 4 SHEET 1 2204 980 WIRE 288 -96 112 -96 WIRE 352 -96 288 -96 WIRE 480 -96 432 -96 WIRE 528 -96 480 -96 WIRE 576 -96 528 -96 WIRE 736 -96 672 -96 WIRE 880 -96 736 -96 WIRE 288 -80 288 -96 WIRE 736 -80 736 -96 WIRE 880 -80 880 -96 WIRE 528 -64 528 -96 WIRE 288 16 288 0 WIRE 736 16 736 -16 WIRE 880 16 880 0 WIRE 528 32 528 0 WIRE -384 64 -480 64 WIRE -208 64 -384 64 WIRE 112 64 112 -96 WIRE 112 64 -208 64 WIRE 128 64 112 64 WIRE 480 64 480 -96 WIRE 480 64 448 64 WIRE -480 80 -480 64 WIRE -384 80 -384 64 WIRE -208 80 -208 64 WIRE -480 176 -480 160 WIRE -384 176 -384 144 WIRE -208 176 -208 160 WIRE -208 176 -384 176 WIRE -64 176 -80 176 WIRE 128 176 16 176 WIRE 480 176 448 176 WIRE 480 192 480 176 WIRE -384 240 -384 176 WIRE -208 240 -384 240 WIRE -208 256 -208 240 WIRE 0 288 -96 288 WIRE 128 288 96 288 WIRE 480 288 480 272 WIRE 480 288 448 288 WIRE -96 304 -96 288 WIRE 0 304 0 288 WIRE 480 336 480 288 WIRE 288 352 288 336 WIRE -208 368 -208 336 WIRE -96 400 -96 384 WIRE 480 432 480 416 WIRE 0 448 0 384 WIRE 0 448 -160 448 WIRE 96 448 96 288 WIRE 96 448 0 448 WIRE -208 480 -208 464 WIRE -384 512 -384 240 WIRE 592 512 592 -48 WIRE 592 512 -384 512 FLAG 288 352 0 FLAG -480 176 0 FLAG -80 176 0 FLAG 880 16 0 FLAG 480 432 0 FLAG -208 480 0 FLAG -96 400 0 FLAG 736 16 0 FLAG 528 32 0 SYMBOL voltage -480 64 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 272 -96 R0 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL voltage 32 176 R90 WINDOW 123 74 56 VTop 2 WINDOW 39 53 56 VTop 2 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V2 SYMATTR Value PWL(4u 0 4.01u 5) SYMBOL res 336 -80 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value .1 SYMBOL pmos 672 -48 M270 WINDOW 0 54 44 VTop 2 WINDOW 3 -11 71 VLeft 2 SYMATTR InstName Q1 SYMATTR Value IRF9640 SYMBOL current 880 -80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value PWL(20u 0 40u 500m) SYMBOL res 464 176 R0 SYMATTR InstName R3 SYMATTR Value 6.04K SYMBOL res 464 320 R0 SYMATTR InstName R5 SYMATTR Value 1.6K SYMBOL res -224 64 R0 SYMATTR InstName R6 SYMATTR Value 1K SYMBOL voltage -96 288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 3.3 SYMBOL res -16 288 R0 SYMATTR InstName R7 SYMATTR Value 10K SYMBOL res -224 240 R0 SYMATTR InstName R9 SYMATTR Value 1K SYMBOL cap 512 -64 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL zener -400 144 M180 WINDOW 0 31 54 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value BZX84C6V2L SYMBOL diode 720 -16 M180 WINDOW 0 26 67 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value 1N914 SYMBOL nmos -160 368 M0 WINDOW 0 33 -9 Right 2 WINDOW 3 29 99 Right 2 SYMATTR InstName Q2 SYMATTR Value 2N7002 SYMBOL LT6108-1 288 224 R0 SYMATTR InstName U1 TEXT 744 376 Left 2 !.tran 60u TEXT 376 520 Top 2 ;NOTE: The reset signal must be applied low on startup.