Version 4
SHEET 1 3064 2124
WIRE 1840 832 1680 832
WIRE 2400 832 1920 832
WIRE 1392 880 1296 880
WIRE 1536 880 1392 880
WIRE 1792 880 1536 880
WIRE 1952 880 1872 880
WIRE 2096 880 1952 880
WIRE 2192 880 2160 880
WIRE 1296 896 1296 880
WIRE 1792 896 1792 880
WIRE 1872 896 1872 880
WIRE 1952 896 1952 880
WIRE 1536 960 1536 880
WIRE 1696 960 1536 960
WIRE 2256 960 2048 960
WIRE 2608 960 2256 960
WIRE 2720 960 2608 960
WIRE 2816 960 2720 960
WIRE 1536 976 1536 960
WIRE 2256 976 2256 960
WIRE 2608 976 2608 960
WIRE 2816 976 2816 960
WIRE 1296 992 1296 976
WIRE 1392 1056 1392 880
WIRE 1696 1056 1584 1056
WIRE 2208 1056 2048 1056
WIRE 2608 1072 2608 1040
WIRE 2816 1072 2816 1056
WIRE 1392 1152 1392 1120
WIRE 1696 1152 1392 1152
WIRE 2192 1152 2192 880
WIRE 2192 1152 2048 1152
WIRE 1392 1168 1392 1152
WIRE 2192 1168 2192 1152
WIRE 1392 1248 1392 1232
WIRE 1536 1248 1536 1072
WIRE 1536 1248 1392 1248
WIRE 1680 1248 1680 832
WIRE 1680 1248 1536 1248
WIRE 1696 1248 1680 1248
WIRE 2192 1248 2192 1232
WIRE 2192 1248 2048 1248
WIRE 2256 1248 2256 1072
WIRE 2256 1248 2192 1248
WIRE 2400 1248 2400 832
WIRE 2400 1248 2256 1248
WIRE 1536 1344 1536 1248
WIRE 1536 1344 1328 1344
WIRE 1696 1344 1536 1344
WIRE 2256 1344 2256 1248
WIRE 2256 1344 2048 1344
WIRE 2400 1344 2256 1344
WIRE 1536 1360 1536 1344
WIRE 2256 1360 2256 1344
WIRE 2720 1360 2720 960
WIRE 2720 1360 2608 1360
WIRE 2816 1360 2720 1360
WIRE 1328 1376 1328 1344
WIRE 2400 1376 2400 1344
WIRE 2608 1376 2608 1360
WIRE 2720 1376 2720 1360
WIRE 2816 1376 2816 1360
WIRE 1696 1440 1584 1440
WIRE 2208 1440 2048 1440
WIRE 1328 1472 1328 1440
WIRE 1536 1472 1536 1456
WIRE 2256 1472 2256 1456
WIRE 2400 1472 2400 1440
WIRE 2720 1472 2720 1456
WIRE 2816 1472 2816 1440
WIRE 2816 1472 2720 1472
WIRE 2608 1488 2608 1456
WIRE 2608 1488 2496 1488
WIRE 2608 1504 2608 1488
WIRE 1600 1536 1584 1536
WIRE 1696 1536 1664 1536
WIRE 2496 1536 2496 1488
WIRE 2496 1536 2048 1536
WIRE 2608 1600 2608 1584
WIRE 1600 1632 1584 1632
WIRE 1696 1632 1680 1632
WIRE 2096 1632 2048 1632
WIRE 2720 1632 2720 1472
WIRE 2720 1632 2096 1632
WIRE 2096 1648 2096 1632
WIRE 2720 1648 2720 1632
WIRE 1696 1728 1664 1728
WIRE 2096 1728 2096 1712
WIRE 2096 1728 2048 1728
WIRE 2720 1744 2720 1728
WIRE 1696 1824 1664 1824
WIRE 2064 1824 2048 1824
WIRE 2160 1824 2144 1824
WIRE 1872 1904 1872 1888
FLAG 1296 992 0
FLAG 1536 1472 0
FLAG 2256 1472 0
FLAG 1328 1472 0
FLAG 2400 1472 0
FLAG 2608 1072 0
FLAG 2816 1072 0
FLAG 2720 1744 0
FLAG 2608 1600 0
FLAG 2160 1824 0
FLAG 1872 1904 0
FLAG 1584 1632 0
FLAG 1584 1536 0
FLAG 1664 1728 0
FLAG 1664 1824 0
FLAG 2816 960 OUT
FLAG 1296 880 IN
SYMBOL VOLTAGE 1296 880 R0
SYMATTR InstName V1
SYMATTR Value 3.6
SYMBOL PowerProducts\\LTC3785 1872 1392 R0
SYMATTR InstName U1
SYMBOL nmos 1584 976 M0
WINDOW 0 4 8 Right 2
WINDOW 3 37 100 Right 2
SYMATTR InstName Q1
SYMATTR Value FDS6890A
SYMBOL nmos 1584 1360 M0
WINDOW 0 0 11 Right 2
WINDOW 3 35 100 Right 2
SYMATTR InstName Q2
SYMATTR Value FDS6890A
SYMBOL schottky 1376 1056 R0
SYMATTR InstName D1
SYMATTR Value CMDSH2-3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 1376 1168 R0
SYMATTR InstName C1
SYMATTR Value .22µ
SYMBOL ind 1824 848 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 2.2µ
SYMATTR SpiceLine Rpar=1K
SYMBOL nmos 2208 976 R0
WINDOW 0 52 16 Left 2
WINDOW 3 59 97 Left 2
SYMATTR InstName Q3
SYMATTR Value FDS6890A
SYMBOL schottky 2096 896 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value CMDSH2-3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 2176 1168 R0
SYMATTR InstName C2
SYMATTR Value .22µ
SYMBOL nmos 2208 1360 R0
WINDOW 0 57 0 Left 2
WINDOW 3 57 96 Left 2
SYMATTR InstName Q4
SYMATTR Value FDS6890A
SYMBOL schottky 1312 1440 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value PMEG2020AEA
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 2384 1440 M180
WINDOW 0 24 72 Left 2
WINDOW 3 21 2 Left 2
SYMATTR InstName D4
SYMATTR Value PMEG2020AEA
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 2592 976 R0
SYMATTR InstName C3
SYMATTR Value 220µ
SYMATTR SpiceLine Rser=2m
SYMBOL res 2704 1360 R0
SYMATTR InstName R1
SYMATTR Value 215K
SYMBOL res 2704 1632 R0
SYMATTR InstName R2
SYMATTR Value 127K
SYMBOL cap 2800 1376 R0
WINDOW 39 26 59 Left 2
WINDOW 3 38 35 Left 2
SYMATTR SpiceLine Rser=10K
SYMATTR Value 220p
SYMATTR InstName C4
SYMBOL cap 2080 1648 R0
WINDOW 3 43 33 Left 2
WINDOW 39 27 63 Left 2
SYMATTR Value 470p
SYMATTR SpiceLine Rser=31.6K Cpar=10p
SYMATTR InstName C5
SYMBOL res 2592 1360 R0
SYMATTR InstName R3
SYMATTR Value 215K
SYMBOL res 2592 1488 R0
SYMATTR InstName R4
SYMATTR Value 127K
SYMBOL res 2048 1840 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 42.2K
SYMBOL res 1696 1616 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 49.9K
SYMBOL cap 1664 1520 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 500p
SYMBOL res 2800 960 R0
SYMATTR InstName Rload
SYMATTR Value 5
TEXT 2448 1816 Left 2 !.tran 900u startup