Version 4
SHEET 1 880 680
WIRE 304 -16 304 -32
WIRE 16 80 -144 80
WIRE 176 80 16 80
WIRE -144 96 -144 80
WIRE 176 96 176 80
WIRE 304 96 304 64
WIRE 16 160 16 80
WIRE 96 160 16 160
WIRE 496 160 384 160
WIRE 592 160 496 160
WIRE 16 176 16 160
WIRE 496 176 496 160
WIRE 592 176 592 160
WIRE -144 192 -144 176
WIRE 496 272 496 240
WIRE 592 272 592 256
WIRE 16 288 16 256
WIRE 96 288 16 288
WIRE 416 288 384 288
WIRE 416 304 416 288
WIRE 176 368 176 352
WIRE 176 368 80 368
WIRE 304 368 304 352
WIRE 80 384 80 368
WIRE 176 384 176 368
WIRE 416 400 416 384
WIRE 80 480 80 448
WIRE 176 480 176 464
FLAG 80 480 0
FLAG 176 480 0
FLAG 304 368 0
FLAG -144 192 0
FLAG 304 -32 0
FLAG 416 400 0
FLAG 496 272 0
FLAG 592 272 0
FLAG -144 80 IN
FLAG 592 160 OUT
SYMBOL res 160 368 R0
SYMATTR InstName R1
SYMATTR Value 49.9K
SYMBOL cap 64 384 R0
SYMATTR InstName C1
SYMATTR Value 0.1µ
SYMBOL voltage -144 80 R0
SYMATTR InstName V1
SYMATTR Value -3.3
SYMBOL res 0 160 R0
SYMATTR InstName R2
SYMATTR Value 5K
SYMBOL voltage 304 80 M180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
SYMATTR InstName V2
SYMATTR Value 3.3
SYMBOL res 400 288 R0
SYMATTR InstName R3
SYMATTR Value 6.65K
SYMBOL cap 480 176 R0
SYMATTR InstName C2
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=10m
SYMBOL res 576 160 R0
SYMATTR InstName Rload
SYMATTR Value 2.5
SYMBOL LT3091 240 224 R0
SYMATTR InstName U1
TEXT 384 448 Left 2 !.tran .1 startup