Version 4
SHEET 1 1648 804
WIRE 544 -32 432 -32
WIRE 752 -32 544 -32
WIRE 1104 -32 752 -32
WIRE 432 -16 432 -32
WIRE 544 -16 544 -32
WIRE 752 64 752 -32
WIRE 432 80 432 64
WIRE 544 112 544 64
WIRE 592 112 544 112
WIRE 944 112 912 112
WIRE 1136 112 944 112
WIRE 1232 112 1200 112
WIRE 1280 112 1232 112
WIRE 1376 112 1280 112
WIRE 1280 128 1280 112
WIRE 1376 128 1376 112
WIRE 352 192 336 192
WIRE 480 192 432 192
WIRE 592 192 544 192
WIRE 944 192 944 176
WIRE 944 192 912 192
WIRE 1104 192 1104 -32
WIRE 1280 224 1280 192
WIRE 1376 224 1376 208
WIRE 400 272 384 272
WIRE 544 272 480 272
WIRE 592 272 544 272
WIRE 1056 272 912 272
WIRE 336 352 336 192
WIRE 352 352 336 352
WIRE 544 352 544 272
WIRE 544 352 432 352
WIRE 592 352 544 352
WIRE 944 352 944 256
WIRE 944 352 912 352
WIRE 1104 352 1104 288
WIRE 1104 352 944 352
WIRE 944 368 944 352
WIRE 1104 384 1104 352
WIRE 400 432 384 432
WIRE 480 432 464 432
WIRE 592 432 560 432
WIRE 944 432 912 432
WIRE 944 448 944 432
WIRE 592 512 544 512
WIRE 1104 512 1104 464
WIRE 1104 512 912 512
WIRE 1104 528 1104 512
WIRE 752 576 752 560
WIRE 336 624 336 352
WIRE 544 624 544 512
WIRE 544 624 336 624
WIRE 1104 624 1104 608
WIRE 1104 624 544 624
WIRE 1232 624 1232 112
WIRE 1232 624 1104 624
FLAG 944 448 0
FLAG 384 432 0
FLAG 752 576 0
FLAG 384 272 0
FLAG 1280 224 0
FLAG 1376 224 0
FLAG 432 80 0
FLAG 1376 112 OUT
FLAG 432 -32 IN
SYMBOL nmos 1056 192 R0
SYMATTR InstName Q1
SYMATTR Value Si4886DY
SYMBOL schottky 928 112 R0
WINDOW 0 42 20 Left 2
WINDOW 3 40 61 Left 2
SYMATTR InstName D1
SYMATTR Value MBRS140
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 928 192 R0
WINDOW 0 26 13 Left 2
WINDOW 3 26 55 Left 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res 528 -32 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res 576 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 82.5K
SYMBOL cap 464 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 680p
SYMBOL schottky 928 432 M180
WINDOW 0 35 59 Left 2
WINDOW 3 31 5 Left 2
SYMATTR InstName D2
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind 1088 368 R0
SYMATTR InstName L1
SYMATTR Value 15µ
SYMATTR SpiceLine Rpar=2K
SYMBOL res 1088 512 R0
SYMATTR InstName R3
SYMATTR Value 15m
SYMBOL res 496 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL res 448 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 174K
SYMBOL res 448 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 200K
SYMBOL cap 544 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value {.0015µ/10}
SYMBOL cap 1264 128 R0
SYMATTR InstName C4
SYMATTR Value 100µ
SYMBOL voltage 432 -32 R0
WINDOW 3 25 101 Left 2
SYMATTR Value 36
SYMATTR InstName V1
SYMBOL diode 1200 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL PowerProducts\\LT3724 752 304 R0
SYMATTR InstName U1
SYMBOL res 1360 112 R0
SYMATTR InstName Rload
SYMATTR Value 50
TEXT 1264 392 Left 2 !.tran 1.5m startup