Version 4
SHEET 1 3752 1572
WIRE 1616 432 1488 432
WIRE 1776 432 1616 432
WIRE 2144 432 1776 432
WIRE 2336 432 2144 432
WIRE 2704 432 2336 432
WIRE 2928 432 2704 432
WIRE 1488 448 1488 432
WIRE 1952 496 1712 496
WIRE 2192 496 1952 496
WIRE 2336 496 2336 432
WIRE 2336 496 2256 496
WIRE 2400 496 2336 496
WIRE 2528 496 2464 496
WIRE 2816 496 2528 496
WIRE 1488 544 1488 528
WIRE 2704 544 2704 432
WIRE 1952 576 1952 496
WIRE 2144 576 2144 432
WIRE 2336 576 2336 496
WIRE 2528 576 2528 496
WIRE 1712 592 1712 496
WIRE 2816 592 2816 496
WIRE 1616 656 1616 432
WIRE 1776 656 1776 432
WIRE 1824 656 1776 656
WIRE 2704 656 2704 624
WIRE 2704 656 2656 656
WIRE 2928 656 2928 432
WIRE 1824 736 1664 736
WIRE 2880 736 2656 736
WIRE 1344 784 1232 784
WIRE 1408 784 1344 784
WIRE 1456 784 1408 784
WIRE 1616 784 1616 752
WIRE 1616 784 1536 784
WIRE 1712 784 1712 656
WIRE 1712 784 1616 784
WIRE 2816 784 2816 656
WIRE 2928 784 2928 752
WIRE 2928 784 2816 784
WIRE 2976 784 2928 784
WIRE 3104 784 3056 784
WIRE 3200 784 3104 784
WIRE 3344 784 3200 784
WIRE 3472 784 3344 784
WIRE 1232 800 1232 784
WIRE 1408 800 1408 784
WIRE 3104 800 3104 784
WIRE 3344 800 3344 784
WIRE 3472 800 3472 784
WIRE 1616 816 1616 784
WIRE 1712 816 1712 784
WIRE 1824 816 1712 816
WIRE 2816 816 2816 784
WIRE 2816 816 2656 816
WIRE 2928 816 2928 784
WIRE 3200 816 3200 784
WIRE 1232 896 1232 880
WIRE 1408 896 1408 864
WIRE 1824 896 1664 896
WIRE 2880 896 2656 896
WIRE 3104 896 3104 864
WIRE 3200 896 3200 880
WIRE 3344 896 3344 880
WIRE 3344 896 3296 896
WIRE 3472 896 3472 880
WIRE 3344 912 3344 896
WIRE 1616 928 1616 912
WIRE 2928 928 2928 912
WIRE 1344 976 1344 784
WIRE 1824 976 1344 976
WIRE 2720 976 2656 976
WIRE 2784 976 2720 976
WIRE 2880 976 2864 976
WIRE 2880 992 2880 976
WIRE 1344 1008 1344 976
WIRE 3344 1008 3344 992
WIRE 1616 1056 1552 1056
WIRE 1744 1056 1696 1056
WIRE 1824 1056 1744 1056
WIRE 2720 1056 2720 1040
WIRE 2720 1056 2656 1056
WIRE 2880 1056 2720 1056
WIRE 3200 1056 3200 976
WIRE 3200 1056 2880 1056
WIRE 3296 1056 3296 896
WIRE 3296 1056 3200 1056
WIRE 1552 1072 1552 1056
WIRE 1344 1136 1344 1072
WIRE 1376 1136 1344 1136
WIRE 1552 1136 1456 1136
WIRE 1744 1136 1744 1120
WIRE 1744 1136 1552 1136
WIRE 1824 1136 1744 1136
WIRE 2704 1136 2656 1136
WIRE 2816 1136 2784 1136
WIRE 1712 1216 1664 1216
WIRE 1824 1216 1792 1216
WIRE 2688 1216 2656 1216
WIRE 1824 1296 1792 1296
WIRE 2688 1296 2656 1296
WIRE 1824 1376 1792 1376
WIRE 2688 1376 2656 1376
WIRE 1952 1472 1952 1456
WIRE 2144 1472 2144 1456
WIRE 2336 1472 2336 1456
WIRE 2528 1472 2528 1456
WIRE 1952 1552 1952 1536
WIRE 2528 1552 2528 1536
FLAG 1952 1552 0
FLAG 2528 1552 0
FLAG 2336 1472 0
FLAG 2144 1472 0
FLAG 2816 1136 0
FLAG 2928 928 0
FLAG 3104 896 0
FLAG 3344 1008 0
FLAG 1664 1216 0
FLAG 1616 928 0
FLAG 1408 896 0
FLAG 1488 544 0
FLAG 1792 1296 0
FLAG 1792 1376 0
FLAG 2688 1216 0
FLAG 2688 1296 0
FLAG 2688 1376 0
FLAG 3472 896 0
FLAG 1232 896 0
FLAG 3472 784 OUT2
FLAG 1232 784 OUT1
FLAG 1488 432 IN
SYMBOL POWERPRODUCTS\\LTC1703 2240 976 R0
SYMATTR InstName U1
SYMBOL NMOS 2880 656 R0
SYMATTR InstName Q1
SYMATTR Value Si4410DY
SYMBOL nmos 2880 816 R0
SYMATTR InstName Q2
SYMATTR Value Si4410DY
SYMBOL ind 2960 800 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 2.2µ
SYMBOL schottky 2256 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL schottky 2400 480 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL cap 1936 1472 R0
SYMATTR InstName C1
SYMATTR Value .001µ
SYMBOL cap 2512 1472 R0
SYMATTR InstName C2
SYMATTR Value .001µ
SYMBOL cap 2800 592 R0
SYMATTR InstName C3
SYMATTR Value 1µ
SYMBOL RES 2800 1152 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res 2688 528 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL polcap 3088 800 R0
SYMATTR InstName C4
SYMATTR Value 220µ
SYMATTR SpiceLine Rser=50m
SYMBOL cap 2704 976 R0
WINDOW 0 35 17 Left 2
SYMATTR InstName C5
SYMATTR Value 15p
SYMBOL cap 2864 992 R0
WINDOW 0 28 2 Left 2
WINDOW 3 38 46 Left 2
SYMATTR InstName C6
SYMATTR Value 220p
SYMBOL res 2880 960 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 3328 784 R0
SYMATTR InstName R4
SYMATTR Value 10.2K
SYMBOL res 3328 896 R0
SYMATTR InstName R5
SYMATTR Value 11.5K
SYMBOL res 3184 880 R0
SYMATTR InstName R6
SYMATTR Value 1K
SYMBOL cap 3184 816 R0
SYMATTR InstName C7
SYMATTR Value 2200p
SYMBOL NMOS 1664 656 M0
SYMATTR InstName Q3
SYMATTR Value Si4410DY
SYMBOL nmos 1664 816 M0
SYMATTR InstName Q4
SYMATTR Value Si4410DY
SYMBOL ind 1552 800 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 2.2µ
SYMBOL cap 1696 592 R0
SYMATTR InstName C8
SYMATTR Value 1µ
SYMBOL res 1696 1200 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 20K
SYMBOL polcap 1392 800 R0
SYMATTR InstName C9
SYMATTR Value 220µ
SYMATTR SpiceLine Rser=50m
SYMBOL cap 1728 1056 R0
WINDOW 0 26 14 Left 2
SYMATTR InstName C10
SYMATTR Value 15p
SYMBOL cap 1536 1072 R0
WINDOW 3 33 42 Left 2
SYMATTR Value 220p
SYMATTR InstName C11
SYMBOL res 1600 1040 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res 1360 1120 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 1K
SYMBOL cap 1328 1008 R0
SYMATTR InstName C12
SYMATTR Value 2200p
SYMBOL VOLTAGE 1488 432 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 3456 784 R0
SYMATTR InstName Rload2
SYMATTR Value 10
SYMBOL res 1216 784 R0
SYMATTR InstName Rload1
SYMATTR Value 10
TEXT 2992 1152 Left 2 !.tran 600u startup