Version 4
SHEET 1 880 680
WIRE 112 64 -144 64
WIRE 288 64 112 64
WIRE 400 64 288 64
WIRE 288 96 288 64
WIRE 400 96 400 64
WIRE 112 112 112 64
WIRE -144 192 -144 64
WIRE 112 208 112 192
WIRE 192 208 112 208
WIRE 288 208 288 160
WIRE 288 208 256 208
WIRE 400 208 400 176
WIRE 400 208 288 208
WIRE 112 224 112 208
WIRE 48 256 -16 256
WIRE -16 272 -16 256
WIRE 48 304 48 256
WIRE 64 304 48 304
WIRE -144 352 -144 272
WIRE -16 352 -144 352
WIRE 112 352 112 320
WIRE 112 352 -16 352
WIRE -16 368 -16 352
FLAG -16 368 0
SYMBOL ind 96 96 R0
SYMATTR InstName L1
SYMATTR Value 200µ
SYMBOL nmos 64 224 R0
SYMATTR InstName M1
SYMATTR Value AO6408
SYMBOL voltage -144 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL cap 272 96 R0
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL schottky 192 224 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 384 80 R0
SYMATTR InstName R1
SYMATTR Value 3
SYMBOL voltage -16 256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 10 0 10n 10n {Ton} 20u)
TEXT -176 416 Left 0 !.step param Ton list 2u 5u 10u 15u
TEXT -178 452 Left 0 !.tran 5m