Version 4
SHEET 1 908 804
WIRE -256 -208 -352 -208
WIRE -96 -208 -256 -208
WIRE 48 -208 -96 -208
WIRE 464 -208 48 -208
WIRE -352 -192 -352 -208
WIRE -96 -192 -96 -208
WIRE 464 -192 464 -208
WIRE -352 -96 -352 -112
WIRE -96 -96 -96 -112
WIRE 352 -96 -96 -96
WIRE 624 -96 416 -96
WIRE 672 -96 624 -96
WIRE 768 -96 672 -96
WIRE 768 -80 768 -96
WIRE 672 -64 672 -96
WIRE 464 -48 464 -112
WIRE 512 -48 464 -48
WIRE 624 -48 624 -96
WIRE 624 -48 576 -48
WIRE -96 0 -96 -96
WIRE 240 0 144 0
WIRE 336 0 240 0
WIRE 464 0 464 -48
WIRE 48 16 48 -208
WIRE 144 16 144 0
WIRE 240 16 240 0
WIRE 336 16 336 0
WIRE 672 16 672 0
WIRE 768 16 768 0
WIRE -16 80 -48 80
WIRE 416 80 400 80
WIRE -96 144 -96 96
WIRE -16 144 -96 144
WIRE 464 144 464 96
WIRE 464 144 400 144
WIRE -96 160 -96 144
WIRE 464 160 464 144
WIRE 624 160 624 -48
WIRE -256 208 -256 -208
WIRE -96 256 -96 240
WIRE -16 256 -96 256
WIRE 464 256 464 240
WIRE 464 256 400 256
WIRE -96 320 -96 256
WIRE -16 320 -96 320
WIRE 464 320 464 256
WIRE 464 320 400 320
WIRE -96 336 -96 320
WIRE 464 336 464 320
WIRE -256 384 -256 288
WIRE -16 384 -256 384
WIRE 624 384 624 240
WIRE 624 384 400 384
WIRE -256 400 -256 384
WIRE 624 400 624 384
WIRE -128 480 -144 480
WIRE -32 480 -48 480
WIRE -16 480 -32 480
WIRE 496 480 400 480
WIRE 576 480 560 480
WIRE -256 496 -256 480
WIRE 624 496 624 480
WIRE -32 576 -32 480
WIRE -16 576 -32 576
WIRE 416 576 400 576
WIRE 496 576 480 576
WIRE -128 672 -144 672
WIRE -16 672 -48 672
WIRE 416 672 400 672
WIRE 192 752 192 736
FLAG 192 752 0
FLAG -144 480 0
FLAG -144 672 0
FLAG 624 496 0
FLAG 496 576 0
FLAG 576 480 0
FLAG -256 496 0
FLAG -352 -96 0
FLAG 672 16 0
FLAG 768 16 0
FLAG -96 336 0
FLAG 464 336 0
FLAG 240 -64 0
FLAG 768 -96 OUT
FLAG -352 -208 IN
SYMBOL nmos 416 0 R0
SYMATTR InstName Q1
SYMATTR Value Si7852DP
SYMBOL ind 448 -208 R0
SYMATTR InstName L1
SYMATTR Value 20µ
SYMATTR SpiceLine Rser=10m Rpar=1K
SYMBOL schottky 512 -32 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBRS360
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -48 0 M0
SYMATTR InstName Q2
SYMATTR Value Si7852DP
SYMBOL schottky 352 -112 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value MBRS360
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -32 464 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 80K
SYMBOL res -32 656 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL res 608 144 R0
SYMATTR InstName R3
SYMATTR Value 475K
SYMBOL res 608 384 R0
SYMATTR InstName R4
SYMATTR Value 24.9K
SYMBOL ind -112 -208 R0
SYMATTR InstName L2
SYMATTR Value 20µ
SYMATTR SpiceLine Rser=10m Rpar=1K
SYMBOL cap 480 560 R90
WINDOW 0 3 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .004µ
SYMBOL cap 496 496 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 2 32 VBottom 2
WINDOW 39 -20 37 VBottom 2
SYMATTR InstName C2
SYMATTR Value 6800p
SYMATTR SpiceLine Rser=13K Cpar=100p
SYMBOL res -272 192 R0
SYMATTR InstName R5
SYMATTR Value 825K
SYMBOL res -272 384 R0
SYMATTR InstName R6
SYMATTR Value 274K
SYMBOL voltage -352 -208 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL cap 656 -64 R0
SYMATTR InstName C3
SYMATTR Value 240µ
SYMATTR SpiceLine Rser=10m
SYMBOL res -112 144 R0
SYMATTR InstName R7
SYMATTR Value 4m
SYMBOL res 448 144 R0
SYMATTR InstName R8
SYMATTR Value 4m
SYMBOL cap 224 -64 R0
WINDOW 0 38 17 Left 2
WINDOW 3 42 42 Left 2
SYMATTR InstName C4
SYMATTR Value 1µ
SYMBOL PowerProducts\\LT3782A 192 272 R0
SYMATTR InstName U1
SYMBOL res 752 -96 R0
SYMATTR InstName Rload
SYMATTR Value 12.5
TEXT 536 696 Left 2 !.tran 3m startup