Version 4
SHEET 1 896 680
WIRE 400 -160 400 -176
WIRE -176 -64 -272 -64
WIRE -64 -64 -176 -64
WIRE 80 -64 0 -64
WIRE 400 -64 400 -96
WIRE 400 -64 368 -64
WIRE 432 -64 400 -64
WIRE 544 -64 512 -64
WIRE 560 -64 544 -64
WIRE 656 -64 640 -64
WIRE 720 -64 656 -64
WIRE -272 -48 -272 -64
WIRE 400 -48 400 -64
WIRE 720 -48 720 -64
WIRE -176 32 -176 -64
WIRE -128 32 -176 32
WIRE -16 32 -48 32
WIRE 80 32 -16 32
WIRE 400 32 400 16
WIRE 400 32 368 32
WIRE 448 32 400 32
WIRE 656 32 656 -64
WIRE 656 32 512 32
WIRE 720 32 720 16
WIRE -272 48 -272 32
WIRE -176 48 -176 32
WIRE -16 48 -16 32
WIRE -176 128 -176 112
WIRE 80 128 -16 128
WIRE 544 128 544 -64
WIRE 544 128 368 128
WIRE -16 144 -16 128
WIRE 528 224 368 224
WIRE 656 224 656 32
WIRE 656 224 528 224
WIRE 656 240 656 224
WIRE 528 288 528 224
WIRE 656 320 656 304
WIRE 80 416 64 416
WIRE 400 416 368 416
WIRE 528 416 528 368
WIRE 528 416 480 416
WIRE 528 432 528 416
WIRE 224 480 224 464
WIRE 528 528 528 512
FLAG 224 480 0
FLAG 64 416 0
FLAG -272 48 0
FLAG 720 32 0
FLAG -272 -64 IN
FLAG 720 -64 OUT
FLAG 400 -176 0
FLAG -176 128 0
FLAG -16 224 0
FLAG 528 528 0
FLAG 656 320 0
SYMBOL voltage -272 -64 R0
SYMATTR InstName V1
SYMATTR Value 25
SYMBOL ind 416 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 20µ
SYMATTR SpiceLine Rser=20m Rpar=10K
SYMBOL res 544 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 68m
SYMBOL cap 704 -48 R0
SYMATTR InstName C1
SYMATTR Value .02m
SYMBOL cap 384 -48 R0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL diode 512 16 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL schottky 384 -160 R0
WINDOW 3 36 42 Left 2
WINDOW 0 40 15 Left 2
SYMATTR Value MBRS340
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL PowerProducts\\LT3652HV 224 176 R0
SYMATTR InstName U1
SYMBOL schottky -64 -48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMATTR Value MBRS340
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -192 48 R0
SYMATTR InstName C3
SYMATTR Value 10µ
SYMBOL res -32 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 750K
SYMBOL res -32 32 R0
SYMATTR InstName R3
SYMATTR Value 44.2K
SYMBOL res -32 128 R0
SYMATTR InstName R4
SYMATTR Value 51.1K
SYMBOL res 496 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 127K
SYMBOL res 512 272 R0
SYMATTR InstName R6
SYMATTR Value 665K
SYMBOL res 512 416 R0
SYMATTR InstName R7
SYMATTR Value 150K
SYMBOL cap 640 240 R0
SYMATTR InstName C4
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=5m
TEXT 600 456 Left 2 !.tran 3m startup