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 2816 1088 2672 1088 WIRE 2848 1088 2816 1088 WIRE 2960 1088 2928 1088 WIRE 3056 1088 2960 1088 WIRE 3168 1088 3056 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 2960 1136 2960 1088 WIRE 2816 1152 2816 1088 WIRE 3056 1152 3056 1088 WIRE 2064 1184 2032 1184 WIRE 2624 1184 2448 1184 WIRE 3168 1200 3168 1168 WIRE 3280 1200 3280 1184 WIRE 2672 1216 2672 1200 WIRE 1904 1248 1888 1248 WIRE 2064 1248 1984 1248 WIRE 2496 1248 2448 1248 WIRE 2560 1248 2496 1248 WIRE 2672 1248 2640 1248 WIRE 2816 1248 2816 1216 WIRE 2960 1248 2960 1216 WIRE 2672 1264 2672 1248 WIRE 1968 1312 1888 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 2960 1360 2960 1312 WIRE 2960 1360 2672 1360 WIRE 3056 1360 3056 1232 WIRE 3056 1360 2960 1360 WIRE 3056 1376 3056 1360 WIRE 2176 1424 2176 1392 WIRE 2336 1424 2336 1392 WIRE 3056 1472 3056 1456 FLAG 2672 1216 0 FLAG 1888 1248 0 FLAG 1888 1312 0 FLAG 2176 1424 0 FLAG 2336 1424 0 FLAG 3168 1200 0 FLAG 2816 1248 0 FLAG 3056 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 2832 1104 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1µ SYMBOL schottky 2800 1216 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 3040 1136 R0 SYMATTR InstName R3 SYMATTR Value 10K SYMBOL res 3040 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 VOLTAGE 1824 864 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL polcap 3152 1104 R0 WINDOW 40 26 57 Left 2 WINDOW 3 36 35 Left 2 SYMATTR SpiceLine2 x4 SYMATTR SpiceLine Rser=.1 SYMATTR InstName C5 SYMATTR Value 180µ SYMBOL res 2944 1120 R0 SYMATTR InstName R6 SYMATTR Value 1.2K SYMBOL cap 2944 1248 R0 SYMATTR InstName C6 SYMATTR Value 820p SYMBOL PowerProducts\\LTC1702A 2256 1184 R0 SYMATTR InstName U1 SYMBOL res 3264 1088 R0 SYMATTR InstName Rload SYMATTR Value 1 TEXT 2728 1408 Left 2 !.tran 750u startup