Version 4
SHEET 1 3512 1528
WIRE 1920 864 1824 864
WIRE 2032 864 1920 864
WIRE 2144 864 2032 864
WIRE 2256 864 2144 864
WIRE 2368 864 2256 864
WIRE 2672 864 2368 864
WIRE 1824 880 1824 864
WIRE 2368 880 2368 864
WIRE 1920 960 1920 864
WIRE 2368 960 2368 944
WIRE 2512 960 2368 960
WIRE 1824 976 1824 960
WIRE 2144 976 2144 864
WIRE 2256 976 2256 864
WIRE 2368 976 2368 960
WIRE 2512 976 2512 960
WIRE 2672 976 2672 864
WIRE 2032 1056 2032 864
WIRE 2064 1056 2032 1056
WIRE 2624 1056 2448 1056
WIRE 2512 1088 2512 1040
WIRE 2672 1088 2672 1072
WIRE 2672 1088 2512 1088
WIRE 2832 1088 2672 1088
WIRE 2864 1088 2832 1088
WIRE 2992 1088 2944 1088
WIRE 3088 1088 2992 1088
WIRE 3168 1088 3088 1088
WIRE 3280 1088 3168 1088
WIRE 2672 1104 2672 1088
WIRE 3168 1104 3168 1088
WIRE 3280 1104 3280 1088
WIRE 1920 1120 1920 1040
WIRE 2064 1120 1920 1120
WIRE 2512 1120 2512 1088
WIRE 2512 1120 2448 1120
WIRE 2832 1136 2832 1088
WIRE 2992 1136 2992 1088
WIRE 2064 1184 2032 1184
WIRE 2624 1184 2448 1184
WIRE 3088 1200 3088 1088
WIRE 3168 1200 3168 1168
WIRE 3280 1200 3280 1184
WIRE 2672 1216 2672 1200
WIRE 2832 1216 2832 1200
WIRE 1904 1248 1872 1248
WIRE 2064 1248 1984 1248
WIRE 2496 1248 2448 1248
WIRE 2560 1248 2496 1248
WIRE 2672 1248 2640 1248
WIRE 2992 1248 2992 1216
WIRE 2672 1264 2672 1248
WIRE 1968 1312 1872 1312
WIRE 2064 1312 2032 1312
WIRE 2496 1312 2448 1312
WIRE 2496 1360 2496 1312
WIRE 2672 1360 2672 1328
WIRE 2672 1360 2496 1360
WIRE 2992 1360 2992 1312
WIRE 2992 1360 2672 1360
WIRE 3088 1360 3088 1280
WIRE 3088 1360 2992 1360
WIRE 3088 1376 3088 1360
WIRE 2176 1424 2176 1392
WIRE 2336 1424 2336 1392
WIRE 3088 1472 3088 1456
FLAG 2672 1216 0
FLAG 1872 1248 0
FLAG 1872 1312 0
FLAG 2176 1424 0
FLAG 2336 1424 0
FLAG 3168 1200 0
FLAG 2832 1216 0
FLAG 3088 1472 0
FLAG 1824 976 0
FLAG 3280 1200 0
FLAG 3280 1088 OUT
FLAG 1824 864 IN
SYMBOL NMOS 2624 976 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL nmos 2624 1104 R0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL RES 1904 944 R0
SYMATTR InstName R1
SYMATTR Value 3.3K
SYMBOL cap 2032 1296 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .001µ
SYMBOL res 2000 1232 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 30K
SYMBOL schottky 2352 880 R0
WINDOW 3 36 63 Left 2
SYMATTR Value 1N5818
SYMATTR InstName D1
SYMBOL polcap 2496 976 R0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL ind 2848 1104 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1µ
SYMBOL schottky 2816 1200 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL cap 2480 1248 R0
WINDOW 0 30 16 Left 2
SYMATTR InstName C3
SYMATTR Value 27p
SYMBOL res 3072 1184 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL res 3072 1360 R0
SYMATTR InstName R4
SYMATTR Value 4.75K
SYMBOL res 2656 1232 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 47K
SYMBOL cap 2656 1264 R0
SYMATTR InstName C4
SYMATTR Value 680p
SYMBOL POWERPRODUCTS\\LTC1702 2256 1184 R0
WINDOW 3 0 224 Center 2
SYMATTR InstName U1
SYMBOL VOLTAGE 1824 864 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL polcap 3152 1104 R0
WINDOW 40 28 59 Left 2
WINDOW 3 35 33 Left 2
SYMATTR SpiceLine2 x4
SYMATTR SpiceLine Rser=.1
SYMATTR InstName C5
SYMATTR Value 180µ
SYMBOL res 2976 1120 R0
SYMATTR InstName R6
SYMATTR Value 1.2K
SYMBOL cap 2976 1248 R0
SYMATTR InstName C6
SYMATTR Value 820p
SYMBOL res 3264 1088 R0
SYMATTR InstName Rload
SYMATTR Value 1
TEXT 2728 1408 Left 2 !.tran 750u startup