Version 4
SHEET 1 1848 1060
WIRE 352 -16 256 -16
WIRE 944 -16 352 -16
WIRE 352 0 352 -16
WIRE 704 0 544 0
WIRE 1008 0 704 0
WIRE 1072 0 1008 0
WIRE 1072 16 1072 0
WIRE 832 48 832 32
WIRE 352 80 352 64
WIRE 544 96 544 0
WIRE 704 96 704 0
WIRE 1072 112 1072 96
WIRE 448 160 416 160
WIRE 832 160 832 128
WIRE 832 160 800 160
WIRE 848 160 832 160
WIRE 944 160 944 -16
WIRE 944 160 928 160
WIRE 1008 208 1008 0
WIRE 416 224 416 160
WIRE 448 224 416 224
WIRE 816 224 800 224
WIRE 256 288 256 -16
WIRE 304 288 256 288
WIRE 448 288 384 288
WIRE 960 288 800 288
WIRE 256 320 256 288
WIRE 448 352 432 352
WIRE 848 352 800 352
WIRE 1008 352 1008 304
WIRE 1008 352 848 352
WIRE 1040 352 1008 352
WIRE 1088 352 1040 352
WIRE 1184 352 1168 352
WIRE 1248 352 1184 352
WIRE 1360 352 1248 352
WIRE 1360 368 1360 352
WIRE 1040 384 1040 352
WIRE 1248 384 1248 352
WIRE 144 416 128 416
WIRE 256 416 256 400
WIRE 256 416 224 416
WIRE 448 416 256 416
WIRE 848 416 800 416
WIRE 848 448 848 416
WIRE 1040 464 1040 448
WIRE 1248 464 1248 448
WIRE 1360 464 1360 448
WIRE 304 480 256 480
WIRE 448 480 368 480
WIRE 816 480 800 480
WIRE 816 544 816 480
WIRE 816 544 800 544
WIRE 848 544 848 512
WIRE 848 544 816 544
WIRE 944 544 944 160
WIRE 944 544 848 544
WIRE 1008 592 1008 352
WIRE 1008 592 944 592
WIRE 352 608 336 608
WIRE 448 608 416 608
WIRE 944 608 944 592
WIRE 944 608 800 608
WIRE 272 672 224 672
WIRE 448 672 336 672
WIRE 960 672 800 672
WIRE 224 736 224 672
WIRE 448 736 224 736
WIRE 1008 736 1008 688
WIRE 1008 736 800 736
WIRE 224 752 224 736
WIRE 1008 752 1008 736
WIRE 448 800 304 800
WIRE 1184 800 1184 352
WIRE 1184 800 800 800
WIRE 224 848 224 832
WIRE 352 864 336 864
WIRE 448 864 432 864
WIRE 816 864 800 864
WIRE 544 944 544 928
WIRE 704 944 704 928
WIRE 304 976 304 800
WIRE 1184 976 1184 800
WIRE 1184 976 304 976
FLAG 544 944 0
FLAG 1008 752 0
FLAG 352 80 0
FLAG 1040 464 0
FLAG 1360 464 0
FLAG 256 480 0
FLAG 1072 112 0
FLAG 368 352 0
FLAG 1072 0 IN
FLAG 1360 352 OUT
FLAG 704 944 0
FLAG 336 608 0
FLAG 336 864 0
FLAG 1248 464 0
FLAG 816 224 0
FLAG 816 864 0
FLAG 224 848 0
FLAG 832 32 0
FLAG 128 416 0
SYMBOL NMOS 960 592 R0
SYMATTR InstName Q1
SYMATTR Value Si4842DY
SYMBOL RES 448 880 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL schottky 832 512 M180
WINDOW 0 17 65 Left 2
WINDOW 3 22 2 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL cap 336 0 R0
WINDOW 3 26 51 Left 2
SYMATTR Value 4.7µ
SYMATTR InstName C1
SYMBOL schottky 1024 448 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 960 208 R0
SYMATTR InstName Q2
SYMATTR Value Si4842DY
SYMBOL ind 1072 368 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1.2µ
SYMBOL cap 368 464 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 30 30 VTop 2
WINDOW 39 56 39 VTop 2
SYMATTR InstName C2
SYMATTR Value 1000p
SYMATTR SpiceLine Rser=10K
SYMBOL VOLTAGE 1072 0 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 432 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .001µ
SYMBOL cap 832 352 R0
WINDOW 0 36 15 Left 2
WINDOW 3 29 53 Left 2
SYMATTR InstName C4
SYMATTR Value .22µ
SYMBOL cap 416 592 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 29 32 VTop 2
WINDOW 39 47 29 VTop 2
SYMATTR InstName C6
SYMATTR Value .01µ
SYMATTR SpiceLine Rser=10K
SYMBOL PowerProducts\\LTC3823 624 512 R0
SYMATTR InstName U1
SYMBOL cap 1232 384 R0
WINDOW 3 21 55 Left 2
SYMATTR Value 220µ
SYMATTR InstName C7
SYMBOL cap 336 656 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 50 38 VTop 2
SYMATTR InstName C8
SYMATTR Value 200p
SYMATTR SpiceLine Rpar=16.2K
SYMBOL res 208 736 R0
WINDOW 3 25 91 Left 2
SYMATTR Value 5.11K
SYMATTR InstName R2
SYMBOL res 288 304 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 944 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 23.2K
SYMBOL res 816 144 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 27.1K
SYMBOL res 240 304 R0
SYMATTR InstName R6
SYMATTR Value 42.5K
SYMBOL res 240 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 7.5K
SYMBOL res 1344 352 R0
SYMATTR InstName Rload
SYMATTR Value .25
TEXT 1208 712 Left 2 !.tran 750u startup