Version 4
SHEET 1 1156 680
WIRE -80 -32 -176 -32
WIRE 128 -32 -80 -32
WIRE 176 -32 128 -32
WIRE 288 -32 256 -32
WIRE 368 -32 288 -32
WIRE 512 -32 432 -32
WIRE 608 -32 512 -32
WIRE 720 -32 672 -32
WIRE 768 -32 720 -32
WIRE 864 -32 768 -32
WIRE 992 -32 864 -32
WIRE -176 -16 -176 -32
WIRE -80 -16 -80 -32
WIRE 512 -16 512 -32
WIRE 768 -16 768 -32
WIRE 864 -16 864 -32
WIRE 992 -16 992 -32
WIRE 128 16 128 -32
WIRE 288 16 288 -32
WIRE -176 80 -176 64
WIRE -80 80 -80 64
WIRE 48 80 -80 80
WIRE 384 80 368 80
WIRE 464 80 448 80
WIRE 512 80 512 64
WIRE 768 80 768 48
WIRE 992 80 992 64
WIRE -80 96 -80 80
WIRE 48 176 32 176
WIRE 864 176 864 64
WIRE 864 176 368 176
WIRE -80 192 -80 176
WIRE 864 192 864 176
WIRE -48 272 -64 272
WIRE 48 272 32 272
WIRE 720 272 720 -32
WIRE 720 272 368 272
WIRE 864 288 864 272
WIRE 128 352 128 336
WIRE 288 352 288 336
WIRE 128 432 128 416
FLAG 128 432 0
FLAG 288 352 0
FLAG -64 272 0
FLAG 32 176 0
FLAG 512 80 0
FLAG -176 80 0
FLAG -80 192 0
FLAG 864 288 0
FLAG 768 80 0
FLAG 992 80 0
FLAG 464 80 0
FLAG -176 -32 IN
FLAG 992 -32 OUT
SYMBOL PowerProducts\\LT8331 208 176 R0
SYMATTR InstName U1
SYMBOL cap 112 352 R0
SYMATTR InstName C1
SYMATTR Value .01µ
SYMBOL res 48 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 63.4K
SYMBOL VOLTAGE -176 -32 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL ind2 272 -16 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 220µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=20m
SYMBOL cap 368 -16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 2.2µ
SYMATTR SpiceLine Rser=10m
SYMBOL ind2 496 -32 R0
SYMATTR InstName L2
SYMATTR Value 220µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=20m
SYMBOL res -96 -32 R0
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL res -96 80 R0
SYMATTR InstName R3
SYMATTR Value 59K
SYMBOL schottky 608 -16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL polcap 752 -16 R0
WINDOW 3 36 29 Left 2
WINDOW 123 32 59 Left 2
SYMATTR Value 4.7µ
SYMATTR Value2 x4
SYMATTR InstName C3
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=1.73205 Rser=0.075 Lser=0 mfg="KEMET" pn="T521D475M063ATE075" type="Tantalum"
SYMBOL res 848 -32 R0
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL res 848 176 R0
SYMATTR InstName R5
SYMATTR Value 34.8K
SYMBOL res 976 -32 R0
SYMATTR InstName Rload
SYMATTR Value 290
SYMBOL cap 384 96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 1µ
TEXT 536 376 Left 2 !.tran 10m startup
TEXT 368 -80 Bottom 2 !K1 L1 L2 1