Version 4
SHEET 1 880 680
WIRE -240 112 -256 112
WIRE 32 112 -160 112
WIRE 352 112 256 112
WIRE 480 112 352 112
WIRE 576 112 480 112
WIRE 352 128 352 112
WIRE 576 128 576 112
WIRE 32 208 16 208
WIRE 304 208 256 208
WIRE 480 224 480 112
WIRE 576 224 576 208
WIRE -240 304 -256 304
WIRE 32 304 -160 304
WIRE 432 304 256 304
WIRE 352 368 352 224
WIRE 480 368 480 320
WIRE 352 464 352 448
WIRE 480 464 480 448
FLAG 576 224 0
FLAG 16 208 0
FLAG -256 304 0
FLAG 352 464 0
FLAG -256 112 0
FLAG 480 464 0
SYMBOL voltage 576 112 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL voltage -144 304 R90
WINDOW 3 32 56 VTop 2
WINDOW 0 -32 56 VBottom 2
SYMATTR Value PULSE(0 3 .7m 100n 100n 2.5m 5m)
SYMATTR InstName V2
SYMBOL nmos 304 128 R0
WINDOW 3 53 80 Left 2
WINDOW 0 56 51 Left 2
SYMATTR Value Si4838DY
SYMATTR InstName Q1
SYMBOL res 368 464 R180
WINDOW 0 -35 89 Left 2
WINDOW 3 -33 43 Left 2
SYMATTR InstName R1
SYMATTR Value 10
SYMBOL LTC1982 144 208 R0
SYMATTR InstName U1
SYMBOL voltage -144 112 R90
WINDOW 3 32 56 VTop 2
WINDOW 0 -32 56 VBottom 2
SYMATTR Value PULSE(0 3 0 100n 100n 2.5m 5m)
SYMATTR InstName V3
SYMBOL nmos 432 224 R0
WINDOW 3 53 80 Left 2
WINDOW 0 56 48 Left 2
SYMATTR Value Si4838DY
SYMATTR InstName Q2
SYMBOL res 496 464 R180
WINDOW 0 -35 89 Left 2
WINDOW 3 -33 43 Left 2
SYMATTR InstName R2
SYMATTR Value 10
TEXT 56 408 Left 2 !.tran 20m startup