Version 4
SHEET 1 1036 680
WIRE -32 -96 -144 -96
WIRE 144 -96 -32 -96
WIRE 416 -96 304 -96
WIRE 496 -96 416 -96
WIRE 608 -96 560 -96
WIRE -144 -80 -144 -96
WIRE 144 -80 144 -96
WIRE 304 -80 304 -96
WIRE 416 -80 416 -96
WIRE -32 0 -32 -96
WIRE 64 0 -32 0
WIRE 416 0 416 -16
WIRE 416 0 384 0
WIRE 496 0 416 0
WIRE 608 0 608 -96
WIRE 608 0 576 0
WIRE 720 0 608 0
WIRE 784 0 720 0
WIRE 848 0 784 0
WIRE -144 16 -144 0
WIRE -32 16 -32 0
WIRE 608 16 608 0
WIRE 720 16 720 0
WIRE 848 16 848 0
WIRE 416 80 416 64
WIRE -32 112 -32 96
WIRE 64 112 -32 112
WIRE 608 112 608 96
WIRE 608 112 384 112
WIRE 720 112 720 80
WIRE 848 112 848 96
WIRE -64 224 -128 224
WIRE 64 224 16 224
WIRE 448 224 384 224
WIRE 784 224 784 0
WIRE 784 224 528 224
WIRE 784 288 784 224
WIRE -112 336 -128 336
WIRE -16 336 -32 336
WIRE 64 336 48 336
WIRE 656 336 384 336
WIRE 720 336 656 336
WIRE 656 352 656 336
WIRE -64 448 -128 448
WIRE 64 448 0 448
WIRE 416 448 384 448
WIRE 496 448 416 448
WIRE 656 448 656 432
WIRE 656 448 576 448
WIRE 784 448 784 384
WIRE 784 448 656 448
WIRE 880 448 784 448
WIRE 416 464 416 448
WIRE 784 464 784 448
WIRE 880 464 880 448
WIRE 224 512 224 496
WIRE 416 560 416 544
WIRE 784 560 784 528
WIRE 880 560 880 544
FLAG -144 16 0
FLAG -128 224 0
FLAG -128 448 0
FLAG -128 336 0
FLAG 224 512 0
FLAG 416 560 0
FLAG 608 192 0
FLAG 416 80 0
FLAG 720 112 0
FLAG 784 560 0
FLAG -144 -96 IN
FLAG 848 0 OUT1
FLAG 880 560 0
FLAG 848 112 0
FLAG 880 448 OUT2
SYMBOL PowerProducts\\LT3500 224 224 R0
SYMATTR InstName U1
SYMBOL res 592 0 R0
SYMATTR InstName R1
SYMATTR Value 42.2K
SYMBOL res 592 96 R0
SYMATTR InstName R2
SYMATTR Value 8.06K
SYMBOL res 640 336 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL res 480 432 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 24.9K
SYMBOL res 400 448 R0
SYMATTR InstName R5
SYMATTR Value 8.06K
SYMBOL ind 480 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 6.8µ
SYMBOL cap 400 -80 R0
WINDOW 3 26 52 Left 2
SYMATTR Value .47µ
SYMATTR InstName C1
SYMBOL voltage -144 -96 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res 32 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 53.6K
SYMBOL res -16 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 40.2K
SYMBOL cap 0 432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .001µ
SYMBOL cap 48 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 330p
SYMBOL schottky 400 64 M180
WINDOW 0 40 46 Left 2
WINDOW 3 34 10 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 704 16 R0
SYMATTR InstName C4
SYMATTR Value 22µ
SYMBOL npn 720 288 R0
SYMATTR InstName Q1
SYMATTR Value FZT849
SYMBOL cap 768 464 R0
WINDOW 3 26 54 Left 2
SYMATTR Value 22µ
SYMATTR InstName C5
SYMBOL res 432 208 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res 832 0 R0
SYMATTR InstName Rload1
SYMATTR Value 5
SYMBOL res 864 448 R0
SYMATTR InstName Rload2
SYMATTR Value 5
SYMBOL res -48 0 R0
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL diode 560 -112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
TEXT 520 560 Left 2 !.tran 500u startup