Version 4
SHEET 1 944 680
WIRE 16 -32 -80 -32
WIRE 64 -32 16 -32
WIRE 608 -32 352 -32
WIRE -80 -16 -80 -32
WIRE 16 64 16 -32
WIRE 64 64 16 64
WIRE 400 64 352 64
WIRE -80 80 -80 64
WIRE 400 80 400 64
WIRE 400 160 400 144
WIRE 400 160 352 160
WIRE 480 160 400 160
WIRE 608 160 608 -32
WIRE 608 160 560 160
WIRE 688 160 608 160
WIRE 784 160 688 160
WIRE 400 176 400 160
WIRE 688 176 688 160
WIRE 784 176 784 160
WIRE 608 240 608 160
WIRE 608 240 528 240
WIRE -48 256 -64 256
WIRE 64 256 32 256
WIRE 400 256 400 240
WIRE 400 256 352 256
WIRE 528 256 528 240
WIRE 608 256 608 240
WIRE 688 272 688 240
WIRE 784 272 784 256
WIRE -32 352 -64 352
WIRE 64 352 32 352
WIRE 528 352 528 320
WIRE 528 352 352 352
WIRE 608 352 608 336
WIRE 608 352 528 352
WIRE 608 368 608 352
WIRE 208 416 208 400
WIRE 608 464 608 448
FLAG -80 80 0
FLAG -64 256 0
FLAG -64 352 0
FLAG 208 416 0
FLAG 608 464 0
FLAG 688 272 0
FLAG 784 272 0
FLAG -80 -32 IN
FLAG 784 160 OUT
SYMBOL PowerProducts\\LT3980 208 160 R0
SYMATTR InstName U1
SYMBOL voltage -80 -32 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL res 48 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 97.6K
SYMBOL cap 32 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 60 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1000p
SYMATTR SpiceLine Rser=4.75K
SYMBOL cap 384 80 R0
SYMATTR InstName C2
SYMATTR Value .47µ
SYMBOL ind 464 176 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 8.2µ
SYMATTR SpiceLine Rser=5m Rpar=2K
SYMBOL schottky 384 240 M180
WINDOW 0 24 62 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MBRS360
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 592 240 R0
SYMATTR InstName R2
SYMATTR Value 536K
SYMBOL res 592 352 R0
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL cap 512 256 R0
SYMATTR InstName C3
SYMATTR Value 22p
SYMBOL cap 672 176 R0
SYMATTR InstName C4
SYMATTR Value 47µ
SYMATTR SpiceLine Rser=5m
SYMBOL res 768 160 R0
SYMATTR InstName Rload
SYMATTR Value 2.5
TEXT 744 392 Left 2 !.tran .5m startup