Version 4
SHEET 1 1836 1544
WIRE -1520 -832 -1776 -832
WIRE -1376 -832 -1520 -832
WIRE -912 -832 -1376 -832
WIRE 672 -832 -912 -832
WIRE 736 -832 672 -832
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WIRE -992 -784 -1040 -784
WIRE -384 -784 -992 -784
WIRE -240 -784 -384 -784
WIRE 288 -784 -240 -784
WIRE 336 -784 288 -784
WIRE 448 -784 400 -784
WIRE 496 -784 448 -784
WIRE 640 -784 560 -784
WIRE -240 -768 -240 -784
WIRE -1520 -736 -1520 -832
WIRE 736 -736 736 -832
WIRE -1152 -720 -1152 -784
WIRE 448 -720 448 -784
WIRE -1776 -688 -1776 -720
WIRE -384 -672 -384 -784
WIRE -1280 -656 -1472 -656
WIRE -992 -656 -992 -784
WIRE -992 -656 -1024 -656
WIRE 288 -656 288 -784
WIRE 320 -656 288 -656
WIRE 688 -656 576 -656
WIRE -912 -592 -912 -832
WIRE -864 -592 -912 -592
WIRE 128 -592 96 -592
WIRE 240 -592 208 -592
WIRE -1728 -576 -1808 -576
WIRE -1616 -576 -1648 -576
WIRE -1520 -576 -1520 -640
WIRE -1520 -576 -1616 -576
WIRE -1344 -576 -1344 -784
WIRE -1344 -576 -1520 -576
WIRE -1280 -576 -1344 -576
WIRE -992 -576 -992 -656
WIRE -992 -576 -1024 -576
WIRE 288 -576 288 -656
WIRE 320 -576 288 -576
WIRE 640 -576 640 -784
WIRE 640 -576 576 -576
WIRE 736 -576 736 -640
WIRE 736 -576 640 -576
WIRE 880 -576 736 -576
WIRE 912 -576 880 -576
WIRE 1056 -576 992 -576
WIRE 1136 -576 1056 -576
WIRE 1200 -576 1136 -576
WIRE -1520 -544 -1520 -576
WIRE 736 -544 736 -576
WIRE 1056 -544 1056 -576
WIRE 1200 -544 1200 -576
WIRE -1616 -528 -1616 -576
WIRE 880 -528 880 -576
WIRE -1280 -496 -1344 -496
WIRE -864 -496 -1024 -496
WIRE 320 -496 96 -496
WIRE 640 -496 576 -496
WIRE 992 -480 1056 -576
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WIRE -1344 -464 -1472 -464
WIRE 640 -464 640 -496
WIRE 688 -464 640 -464
WIRE -1520 -416 -1520 -448
WIRE -1152 -416 -1152 -432
WIRE 448 -416 448 -432
WIRE 736 -416 736 -448
WIRE 1056 -416 1056 -480
WIRE 1200 -416 1200 -464
WIRE -1616 -400 -1616 -448
WIRE -928 -400 -1616 -400
WIRE -864 -400 -928 -400
WIRE 128 -400 96 -400
WIRE 880 -400 880 -448
WIRE 880 -400 128 -400
WIRE -928 -384 -928 -400
WIRE 128 -384 128 -400
WIRE -1808 -304 -1808 -576
WIRE -928 -304 -928 -320
WIRE -928 -304 -1808 -304
WIRE -864 -304 -928 -304
WIRE 128 -304 128 -320
WIRE 128 -304 96 -304
WIRE 832 -304 128 -304
WIRE 992 -304 992 -480
WIRE 992 -304 832 -304
WIRE 832 -224 832 -304
WIRE 992 -224 992 -304
WIRE -864 -208 -944 -208
WIRE 128 -208 96 -208
WIRE 144 -208 128 -208
WIRE 256 -208 208 -208
WIRE -944 -176 -944 -208
WIRE 128 -176 128 -208
WIRE 128 -176 -944 -176
WIRE -992 -112 -992 -576
WIRE -864 -112 -992 -112
WIRE 256 -112 256 -208
WIRE 256 -112 96 -112
WIRE 832 -112 832 -160
WIRE 832 -112 256 -112
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WIRE 992 -112 832 -112
WIRE 992 -96 992 -112
WIRE 992 0 992 -16
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WIRE -1376 64 -1520 64
WIRE 672 64 672 -832
WIRE 736 64 672 64
WIRE -1264 176 -1344 176
WIRE -1152 176 -1200 176
WIRE -1104 176 -1152 176
WIRE -992 176 -992 -112
WIRE -992 176 -1040 176
WIRE 288 176 288 -576
WIRE 336 176 288 176
WIRE 448 176 400 176
WIRE 496 176 448 176
WIRE 640 176 560 176
WIRE -1520 224 -1520 64
WIRE 736 224 736 64
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WIRE 448 240 448 176
WIRE -864 272 -896 272
WIRE 128 272 96 272
WIRE 160 272 128 272
WIRE 160 288 160 272
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WIRE -992 304 -1024 304
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WIRE 320 304 288 304
WIRE 688 304 576 304
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WIRE 128 368 128 272
WIRE 128 368 96 368
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WIRE -992 384 -1024 384
WIRE 160 384 160 352
WIRE 288 384 288 304
WIRE 320 384 288 384
WIRE 640 384 640 176
WIRE 640 384 576 384
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WIRE 736 384 640 384
WIRE 880 384 736 384
WIRE 912 384 880 384
WIRE 1136 384 1136 -576
WIRE 1136 384 992 384
WIRE -896 400 -896 368
WIRE 128 400 128 368
WIRE 128 400 -896 400
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WIRE 736 416 736 384
WIRE 880 432 880 384
WIRE -1632 448 -1632 384
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WIRE 320 464 96 464
WIRE 640 464 576 464
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WIRE -1344 496 -1472 496
WIRE 640 496 640 464
WIRE 688 496 640 496
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WIRE 448 544 448 528
WIRE 736 544 736 512
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WIRE 128 560 96 560
WIRE 880 560 880 512
WIRE 880 560 128 560
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WIRE 128 576 128 560
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WIRE -928 656 -928 640
WIRE -928 656 -1808 656
WIRE -864 656 -928 656
WIRE 128 656 128 640
WIRE 128 656 96 656
WIRE 1136 656 1136 384
WIRE 1136 656 128 656
WIRE -944 752 -944 -176
WIRE -864 752 -944 752
WIRE 128 752 96 752
WIRE -944 784 -944 752
WIRE 128 784 128 752
WIRE 128 784 -944 784
WIRE -992 848 -992 384
WIRE -864 848 -992 848
WIRE 288 848 288 384
WIRE 288 848 96 848
WIRE -384 1312 -384 1296
WIRE -768 1328 -768 1296
WIRE -672 1328 -672 1296
WIRE -672 1328 -768 1328
WIRE -96 1328 -96 1296
WIRE -96 1328 -672 1328
WIRE 0 1328 0 1296
WIRE 0 1328 -96 1328
WIRE -576 1344 -576 1296
WIRE -480 1344 -480 1296
WIRE -480 1344 -576 1344
WIRE -288 1344 -288 1296
WIRE -288 1344 -480 1344
WIRE -192 1344 -192 1296
WIRE -192 1344 -288 1344
WIRE -192 1360 -192 1344
WIRE -192 1456 -192 1440
WIRE -1808 1488 -1808 656
WIRE 1136 1488 1136 656
WIRE 1136 1488 -1808 1488
FLAG 240 -592 0
FLAG -240 -688 0
FLAG 448 -416 0
FLAG 736 -416 0
FLAG 1056 -416 0
FLAG 1200 -416 0
FLAG 992 0 0
FLAG 160 384 0
FLAG -1152 -416 0
FLAG -1520 -416 0
FLAG -1152 544 0
FLAG -1520 544 0
FLAG 448 544 0
FLAG 736 544 0
FLAG -192 1456 0
FLAG -384 1312 0
FLAG -1776 -688 0
FLAG -1776 -832 IN
FLAG 1056 -576 OUT
SYMBOL PowerProducts\\LTC7851 -384 320 R0
SYMATTR InstName U1
SYMBOL res 224 -608 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 30.9K
SYMBOL voltage -240 -784 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL PowerProducts\\LTC4449 448 -576 R0
SYMATTR InstName U2
SYMBOL schottky 336 -768 R270
WINDOW 3 0 32 VBottom 2
WINDOW 0 32 32 VTop 2
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 688 -736 R0
SYMATTR InstName M1
SYMATTR Value Si4408DY
SYMBOL nmos 688 -544 R0
SYMATTR InstName M2
SYMATTR Value Si4408DY
SYMBOL cap 560 -800 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .1µ
SYMBOL ind 896 -560 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value .25µ
SYMATTR Value2 Rser=.3m
SYMBOL cap 1040 -544 R0
WINDOW 123 26 89 Left 2
SYMATTR Value2 X15
SYMATTR InstName C2
SYMATTR Value 220µ
SYMBOL res 1184 -560 R0
SYMATTR InstName R3
SYMATTR Value 10m
SYMBOL res 976 -112 R0
SYMATTR InstName R5
SYMATTR Value 15K
SYMBOL cap 208 -224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 30 31 VTop 2
WINDOW 123 81 31 VBottom 2
WINDOW 39 105 36 VBottom 2
SYMATTR InstName C4
SYMATTR Value 2.2n
SYMATTR Value2 Rser=4.02K
SYMATTR SpiceLine Cpar=100p
SYMBOL cap 144 352 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL PowerProducts\\LTC4449 -1152 -576 M0
SYMATTR InstName U3
SYMBOL schottky -1040 -768 M270
WINDOW 3 0 32 VBottom 2
WINDOW 0 32 32 VTop 2
SYMATTR Value CMDSH2-3
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -1472 -736 M0
WINDOW 0 31 -8 Right 2
WINDOW 3 36 104 Right 2
SYMATTR InstName M3
SYMATTR Value Si4408DY
SYMBOL nmos -1472 -544 M0
WINDOW 0 31 -8 Right 2
WINDOW 3 35 97 Right 2
SYMATTR InstName M4
SYMATTR Value Si4408DY
SYMBOL cap -1264 -800 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value .1µ
SYMBOL PowerProducts\\LTC4449 -1152 384 M0
SYMATTR InstName U4
SYMBOL schottky -1040 192 M270
WINDOW 3 0 32 VBottom 2
WINDOW 0 32 32 VTop 2
SYMATTR Value CMDSH2-3
SYMATTR InstName D3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -1472 224 M0
WINDOW 0 31 -6 Right 2
WINDOW 3 35 105 Right 2
SYMATTR InstName M5
SYMATTR Value Si4408DY
SYMBOL nmos -1472 416 M0
WINDOW 0 31 -13 Right 2
WINDOW 3 33 103 Right 2
SYMATTR InstName M6
SYMATTR Value Si4408DY
SYMBOL cap -1264 160 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value .1µ
SYMBOL PowerProducts\\LTC4449 448 384 R0
SYMATTR InstName U5
SYMBOL schottky 336 192 R270
WINDOW 3 0 32 VBottom 2
WINDOW 0 32 32 VTop 2
SYMATTR Value CMDSH2-3
SYMATTR InstName D4
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 688 224 R0
SYMATTR InstName M7
SYMATTR Value Si4408DY
SYMBOL nmos 688 416 R0
SYMATTR InstName M8
SYMATTR Value Si4408DY
SYMBOL cap 560 160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C10
SYMATTR Value .1µ
SYMBOL res -208 1344 R0
SYMATTR InstName R8
SYMATTR Value 42.2K
SYMBOL voltage -1776 -816 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL res 976 -240 R0
SYMATTR InstName R9
SYMATTR Value 10K
SYMBOL cap 816 -224 R0
WINDOW 123 23 60 Left 2
WINDOW 3 49 33 Left 2
SYMATTR Value2 Rser=332
SYMATTR Value 3.3n
SYMATTR InstName C3
SYMBOL cap 112 -384 R0
SYMATTR InstName C12
SYMATTR Value .22µ
SYMBOL ind 896 400 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value .25µ
SYMATTR Value2 Rser=.3m
SYMBOL cap 112 576 R0
SYMATTR InstName C13
SYMATTR Value .22µ
SYMBOL ind -1632 -560 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value .25µ
SYMATTR Value2 Rser=.3m
SYMBOL cap -944 -384 R0
SYMATTR InstName C14
SYMATTR Value .22µ
SYMBOL ind -1664 400 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value .25µ
SYMATTR Value2 Rser=.3m
SYMBOL res -1648 544 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R10
SYMATTR Value 3.57K
SYMBOL cap -944 576 R0
SYMATTR InstName C7
SYMATTR Value .22µ
SYMBOL res 864 528 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 3.57K
SYMBOL res 864 -432 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R11
SYMATTR Value 3.57K
SYMBOL res -1632 -432 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 3.57K
TEXT 448 1336 Left 2 !.tran .55m startup