Version 4
SHEET 1 880 680
WIRE -1648 -672 -1648 -720
WIRE -1552 -672 -1600 -672
WIRE -1552 -656 -1552 -672
WIRE -1648 -640 -1648 -672
WIRE -1600 -640 -1600 -672
WIRE -1984 -592 -2064 -592
WIRE -1664 -592 -1984 -592
WIRE -1344 -592 -1584 -592
WIRE -1296 -592 -1344 -592
WIRE -1136 -592 -1216 -592
WIRE -1056 -592 -1136 -592
WIRE -960 -592 -976 -592
WIRE -784 -592 -960 -592
WIRE -656 -592 -784 -592
WIRE -624 -592 -656 -592
WIRE -1344 -496 -1344 -592
WIRE -960 -496 -960 -592
WIRE -784 -496 -784 -592
WIRE -624 -480 -624 -592
WIRE -2064 -464 -2064 -592
WIRE -2064 -288 -2064 -384
WIRE -1344 -288 -1344 -432
WIRE -1344 -288 -2064 -288
WIRE -960 -288 -960 -432
WIRE -960 -288 -1344 -288
WIRE -784 -288 -784 -416
WIRE -784 -288 -960 -288
WIRE -624 -288 -624 -416
WIRE -624 -288 -784 -288
WIRE -1344 -256 -1344 -288
WIRE -1488 -128 -1488 -160
WIRE -1312 -80 -1360 -80
WIRE -1184 -80 -1232 -80
WIRE -1168 -80 -1184 -80
WIRE -1616 0 -1648 0
WIRE -1648 16 -1648 0
WIRE -1312 80 -1360 80
WIRE -1184 80 -1232 80
WIRE -1168 80 -1184 80
WIRE -1488 176 -1488 128
WIRE -1472 176 -1488 176
WIRE -1344 176 -1392 176
WIRE -1136 208 -1232 208
WIRE -912 208 -1072 208
WIRE -1488 272 -1488 176
WIRE -1456 272 -1488 272
WIRE -1232 288 -1232 208
WIRE -1184 288 -1232 288
WIRE -1072 288 -1120 288
WIRE -912 288 -912 208
WIRE -912 288 -992 288
WIRE -1456 304 -1456 272
WIRE -1424 304 -1456 304
WIRE -1328 304 -1360 304
WIRE -544 304 -544 80
WIRE -1504 352 -1504 336
WIRE -1664 368 -1696 368
WIRE -1664 384 -1664 368
WIRE -1504 384 -1504 352
WIRE -1456 384 -1456 304
WIRE -1696 416 -1696 368
WIRE -912 416 -912 288
WIRE -912 416 -992 416
WIRE -544 416 -544 384
WIRE -544 416 -912 416
WIRE -1520 432 -1664 432
WIRE -1232 432 -1232 288
WIRE -1232 432 -1440 432
WIRE -1056 432 -1232 432
WIRE -1728 448 -1824 448
WIRE -912 448 -992 448
WIRE -1824 464 -1824 448
WIRE -1632 464 -1664 464
WIRE -1984 480 -1984 432
WIRE -912 496 -912 448
WIRE -1632 512 -1632 464
WIRE -1824 576 -1824 544
FLAG -1344 -256 0
FLAG -1984 -592 Vin
FLAG -656 -592 Vout
FLAG -1552 -656 0
FLAG -912 576 0
FLAG -544 496 0
FLAG -544 80 Vout
FLAG -1632 592 0
FLAG -1824 576 0
FLAG -1664 384 0
FLAG -1024 464 0
FLAG -1984 560 0
FLAG -1984 432 5V
FLAG -1696 480 5V
FLAG -1024 400 5V
FLAG -1824 448 PWM
FLAG -1648 -672 PWM
FLAG -1136 -592 Sense+
FLAG -1648 16 0
FLAG -1488 -160 5V
FLAG -1184 -80 Sense+
FLAG -1184 80 Vout
FLAG -1504 352 5V
FLAG -1344 176 0
FLAG -1328 304 0
SYMBOL voltage -2064 -480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName Vin1
SYMATTR Value 12
SYMBOL ind -1312 -576 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 20µ
SYMATTR SpiceLine Ipk=7 Rser=0.001 Rpar=0 Cpar=0
SYMBOL schottky -1328 -432 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value B530C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL polcap -976 -496 R0
WINDOW 3 24 56 Left 2
WINDOW 123 24 84 Left 2
SYMATTR Value 47µ
SYMATTR InstName Cout1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=35 Rser=0.1
SYMBOL res -800 -512 R0
SYMATTR InstName RLoad1
SYMATTR Value 5
SYMBOL sw -1568 -592 R90
SYMATTR InstName S1
SYMBOL voltage -912 480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL res -560 288 R0
SYMATTR InstName R1
SYMATTR Value 2.6k
SYMBOL res -560 400 R0
SYMATTR InstName R4
SYMATTR Value 2.6k
SYMBOL res -976 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47.6k
SYMBOL cap -1120 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 858p
SYMBOL voltage -1632 496 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 2999n 1n 0n 3u)
SYMBOL res -1840 448 R0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL Opamps\\LTC6247 -1696 448 R180
SYMATTR InstName U1
SYMBOL Opamps\\LTC6247 -1024 432 M0
SYMATTR InstName U2
SYMBOL voltage -1984 464 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5V
SYMBOL cap -1072 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 22p
SYMBOL load -640 -480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(0 2 1.2m 100n 100n 600u 3m)
SYMBOL PowerProducts\\LT6105 -1488 0 R90
SYMATTR InstName U3
SYMBOL res -960 -608 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 0.01
SYMBOL res -1216 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL res -1216 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL sw -1424 432 R90
SYMATTR InstName S2
SYMATTR Value SW2
SYMBOL res -1376 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 2k
SYMBOL cap -1360 288 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 330p
TEXT -1392 -800 Left 2 !.tran 0 3m 0 10n startup
TEXT -2176 -688 Left 2 !.model SW SW(Ron = 0.001 Vt = 3)
TEXT -2168 -720 Left 2 !.lib opamp.sub
TEXT -2176 -664 Left 2 !.model SW2 SW(Ron = 0.001 Vt = 4)