Version 4
SHEET 1 2760 1808
WIRE 1456 1056 1344 1056
WIRE 1744 1056 1456 1056
WIRE 1840 1056 1744 1056
WIRE 1984 1056 1904 1056
WIRE 1344 1072 1344 1056
WIRE 1456 1072 1456 1056
WIRE 1744 1104 1744 1056
WIRE 2224 1152 2080 1152
WIRE 1344 1168 1344 1152
WIRE 1456 1168 1456 1152
WIRE 1552 1168 1456 1168
WIRE 1984 1168 1984 1056
WIRE 1984 1168 1936 1168
WIRE 2224 1168 2224 1152
WIRE 1984 1200 1984 1168
WIRE 2080 1216 2080 1152
WIRE 1472 1232 1456 1232
WIRE 1552 1232 1536 1232
WIRE 1952 1232 1936 1232
WIRE 2224 1264 2224 1248
WIRE 1536 1296 1456 1296
WIRE 1552 1296 1536 1296
WIRE 2032 1296 1936 1296
WIRE 1456 1312 1456 1296
WIRE 1984 1328 1984 1264
WIRE 2080 1328 2080 1312
WIRE 2080 1328 1984 1328
WIRE 2112 1328 2080 1328
WIRE 2208 1328 2192 1328
WIRE 2224 1328 2208 1328
WIRE 2320 1328 2304 1328
WIRE 2368 1328 2320 1328
WIRE 2496 1328 2368 1328
WIRE 2080 1344 2080 1328
WIRE 2368 1344 2368 1328
WIRE 2496 1344 2496 1328
WIRE 1536 1360 1536 1296
WIRE 1552 1360 1536 1360
WIRE 1984 1360 1984 1328
WIRE 1984 1360 1936 1360
WIRE 1376 1424 1296 1424
WIRE 1456 1424 1456 1392
WIRE 1456 1424 1440 1424
WIRE 1552 1424 1456 1424
WIRE 2032 1424 1936 1424
WIRE 2368 1440 2368 1408
WIRE 2496 1440 2496 1424
WIRE 2080 1456 2080 1440
WIRE 1312 1488 1296 1488
WIRE 1440 1488 1376 1488
WIRE 1552 1488 1520 1488
WIRE 2208 1488 2208 1328
WIRE 2208 1488 1936 1488
WIRE 1376 1552 1296 1552
WIRE 1520 1552 1456 1552
WIRE 1552 1552 1520 1552
WIRE 2320 1552 2320 1328
WIRE 2320 1552 1936 1552
WIRE 1616 1632 1616 1616
WIRE 1744 1632 1744 1616
WIRE 1872 1632 1872 1616
WIRE 1616 1712 1616 1696
WIRE 1520 1744 1520 1552
WIRE 2064 1744 1520 1744
WIRE 2320 1744 2320 1552
WIRE 2320 1744 2144 1744
FLAG 2368 1440 0
FLAG 1744 1632 0
FLAG 1616 1712 0
FLAG 1872 1632 0
FLAG 2080 1456 0
FLAG 1296 1552 0
FLAG 2496 1440 0
FLAG 1344 1168 0
FLAG 1296 1488 0
FLAG 1296 1424 0
FLAG 1456 1232 0
FLAG 2224 1264 0
FLAG 2496 1328 OUT
FLAG 1344 1056 IN
SYMBOL POWERPRODUCTS\\LT1339 1744 1360 R0
SYMATTR InstName U1
SYMBOL cap 1600 1632 R0
SYMATTR InstName C1
SYMATTR Value .01µ
SYMBOL NMOS 2032 1344 R0
SYMATTR InstName Q1
SYMATTR Value Si7884DP
SYMBOL nmos 2032 1216 R0
WINDOW 0 56 4 Left 2
WINDOW 3 56 44 Left 2
SYMATTR InstName Q2
SYMATTR Value Si7884DP
SYMBOL ind 2096 1344 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µ
SYMBOL RES 2208 1344 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 5m
SYMBOL polcap 2352 1344 R0
SYMATTR InstName C2
SYMATTR Value 2200µ
SYMATTR SpiceLine Rser=5m
SYMBOL polcap 1968 1200 R0
SYMATTR InstName C3
SYMATTR Value 1µ
SYMBOL schottky 1840 1040 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMBOL res 2048 1760 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 3K
SYMBOL res 1472 1536 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL VOLTAGE 1344 1056 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res 1536 1472 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap 1376 1472 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 1000p
SYMBOL cap 1440 1408 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 2200p
SYMBOL res 1440 1408 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap 1536 1216 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 2200p
SYMBOL res 1440 1056 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL voltage 2224 1152 R0
SYMATTR InstName V2
SYMATTR Value 28
SYMBOL res 2480 1328 R0
SYMATTR InstName Rload
SYMATTR Value .25
TEXT 2040 1616 Left 2 !.tran 3m startup