Version 4
SHEET 1 2184 824
WIRE 208 -16 112 -16
WIRE 528 -16 208 -16
WIRE 688 -16 528 -16
WIRE 1008 -16 688 -16
WIRE 112 0 112 -16
WIRE 528 0 528 -16
WIRE 1008 80 1008 -16
WIRE 112 96 112 80
WIRE 208 96 208 -16
WIRE 528 96 528 80
WIRE 688 96 688 -16
WIRE 416 160 400 160
WIRE 960 160 800 160
WIRE 416 224 400 224
WIRE 880 224 800 224
WIRE 1008 224 1008 176
WIRE 1008 224 880 224
WIRE 1056 224 1008 224
WIRE 1088 224 1056 224
WIRE 1200 224 1168 224
WIRE 1312 224 1200 224
WIRE 1424 224 1312 224
WIRE 1200 240 1200 224
WIRE 1312 240 1312 224
WIRE 1424 240 1424 224
WIRE 1056 272 1056 224
WIRE 288 288 240 288
WIRE 416 288 352 288
WIRE 880 288 800 288
WIRE 1200 336 1200 320
WIRE 1200 336 1168 336
WIRE 1312 336 1312 304
WIRE 1424 336 1424 320
WIRE 416 352 400 352
WIRE 832 352 800 352
WIRE 880 352 832 352
WIRE 1200 352 1200 336
WIRE 880 368 880 352
WIRE 1056 368 1056 336
WIRE 320 416 304 416
WIRE 416 416 400 416
WIRE 832 416 832 352
WIRE 832 416 800 416
WIRE 880 448 880 432
WIRE 1200 448 1200 432
WIRE 208 480 208 176
WIRE 416 480 208 480
WIRE 1008 480 1008 224
WIRE 1008 480 800 480
WIRE 1008 528 1008 480
WIRE 416 544 400 544
WIRE 928 544 800 544
WIRE 416 608 352 608
WIRE 960 608 800 608
WIRE 928 640 928 544
WIRE 1008 640 1008 624
WIRE 1008 640 928 640
WIRE 1008 656 1008 640
WIRE 528 688 528 672
WIRE 688 688 688 672
WIRE 352 720 352 608
WIRE 1168 720 1168 336
WIRE 1168 720 352 720
FLAG 528 688 0
FLAG 688 688 0
FLAG 1008 656 0
FLAG 880 448 0
FLAG 1056 368 0
FLAG 1424 336 0
FLAG 1200 448 0
FLAG 1312 336 0
FLAG 240 416 0
FLAG 112 96 0
FLAG 240 288 0
FLAG 1424 224 OUT
FLAG 112 -16 IN
SYMBOL NMOS 960 528 R0
SYMATTR InstName Q1
SYMATTR Value IRF7303
SYMBOL RES 512 -16 R0
SYMATTR InstName R1
SYMATTR Value 1.5Meg
SYMBOL res 1184 224 R0
SYMATTR InstName R2
SYMATTR Value 30.1K
SYMBOL res 1184 336 R0
SYMATTR InstName R3
SYMATTR Value 14K
SYMBOL schottky 864 352 M180
WINDOW 0 38 40 Left 2
WINDOW 3 25 4 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL schottky 1040 336 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 960 80 R0
SYMATTR InstName Q2
SYMATTR Value IRF7303
SYMBOL ind 1072 240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 3.8µ
SYMBOL polcap 1296 240 R0
WINDOW 40 28 64 Left 2
WINDOW 3 35 37 Left 2
SYMATTR SpiceLine2 x2
SYMATTR Value 150µ
SYMATTR InstName C1
SYMATTR SpiceLine Rser=50m
SYMBOL res 416 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 2K
SYMBOL cap 304 400 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 5000p
SYMBOL res 192 80 R0
SYMATTR InstName R5
SYMATTR Value 3.3K
SYMBOL VOLTAGE 112 -16 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL cap 352 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .001µ
SYMBOL cap 864 224 R0
WINDOW 0 36 15 Left 2
WINDOW 3 29 53 Left 2
SYMATTR InstName C4
SYMATTR Value .22µ
SYMBOL PowerProducts\\LTC3778 608 384 R0
SYMATTR InstName U1
SYMBOL polcap 864 368 R0
WINDOW 0 27 14 Left 2
SYMATTR InstName C6
SYMATTR Value 4.7µ
SYMBOL res 1408 224 R0
SYMATTR InstName Rload
SYMATTR Value 1
TEXT 1208 504 Left 2 !.tran 2.75m startup