Version 4 SHEET 1 1676 1288 WIRE -400 -656 -496 -656 WIRE -240 -656 -400 -656 WIRE -144 -656 -240 -656 WIRE -112 -656 -144 -656 WIRE 0 -656 -32 -656 WIRE 1248 -656 0 -656 WIRE 0 -624 0 -656 WIRE 336 -592 96 -592 WIRE 672 -592 400 -592 WIRE -240 -576 -240 -656 WIRE 864 -560 816 -560 WIRE 992 -560 928 -560 WIRE -144 -528 -144 -656 WIRE -96 -528 -144 -528 WIRE 0 -528 0 -544 WIRE 0 -528 -32 -528 WIRE 448 -528 400 -528 WIRE 544 -528 512 -528 WIRE 672 -528 672 -592 WIRE 672 -528 624 -528 WIRE -400 -480 -400 -656 WIRE -144 -480 -144 -528 WIRE 1248 -480 1248 -656 WIRE 288 -464 192 -464 WIRE 784 -464 768 -464 WIRE 816 -464 816 -560 WIRE 816 -464 784 -464 WIRE 864 -464 816 -464 WIRE 992 -464 992 -560 WIRE 992 -464 944 -464 WIRE 1056 -464 992 -464 WIRE 1200 -464 1136 -464 WIRE 400 -448 400 -528 WIRE 400 -448 352 -448 WIRE 544 -448 400 -448 WIRE 672 -448 672 -528 WIRE 672 -448 624 -448 WIRE 704 -448 672 -448 WIRE 0 -432 0 -528 WIRE 0 -432 -80 -432 WIRE 0 -416 0 -432 WIRE -400 -304 -400 -416 WIRE -352 -304 -400 -304 WIRE -240 -304 -240 -512 WIRE -240 -304 -352 -304 WIRE 0 -304 0 -336 WIRE 0 -304 -240 -304 WIRE 96 -304 96 -592 WIRE 96 -304 0 -304 WIRE 112 -304 96 -304 WIRE 192 -304 192 -464 WIRE 192 -304 176 -304 WIRE 560 -304 192 -304 WIRE 704 -304 640 -304 WIRE -400 -208 -400 -304 WIRE 1136 -112 1008 -112 WIRE 1248 -112 1248 -384 WIRE 1248 -112 1136 -112 WIRE -144 -48 -144 -384 WIRE 256 -48 -144 -48 WIRE -496 -16 -496 -656 WIRE -352 -16 -496 -16 WIRE -256 -16 -352 -16 WIRE -80 -16 -256 -16 WIRE 256 0 256 -48 WIRE -80 32 -80 -16 WIRE 80 112 48 112 WIRE 496 112 80 112 WIRE 592 112 496 112 WIRE 1008 112 1008 -112 WIRE 1056 112 1008 112 WIRE 1184 112 1136 112 WIRE 1328 112 1184 112 WIRE 80 176 48 176 WIRE 336 176 80 176 WIRE 416 176 336 176 WIRE 768 176 416 176 WIRE 912 176 848 176 WIRE 1008 176 1008 112 WIRE 1008 176 912 176 WIRE 592 192 592 112 WIRE -496 208 -496 -16 WIRE 80 240 48 240 WIRE 128 240 80 240 WIRE 160 240 128 240 WIRE 256 240 256 80 WIRE 256 240 224 240 WIRE 336 240 336 176 WIRE -256 272 -256 -16 WIRE 592 272 592 256 WIRE 656 272 592 272 WIRE 704 272 704 -304 WIRE 704 272 656 272 WIRE 1008 288 1008 176 WIRE 1328 288 1328 112 WIRE 592 304 592 272 WIRE 1184 304 1184 112 WIRE 128 320 128 240 WIRE 416 320 416 176 WIRE 912 320 912 176 WIRE 496 352 496 112 WIRE 528 352 496 352 WIRE -256 368 -256 336 WIRE -160 368 -256 368 WIRE -16 368 -160 368 WIRE 80 368 80 240 WIRE 80 368 48 368 WIRE 256 368 256 240 WIRE 256 368 192 368 WIRE 336 384 336 304 WIRE -160 400 -160 368 WIRE 256 400 256 368 WIRE 496 400 496 352 WIRE 864 400 816 400 WIRE -496 512 -496 288 WIRE -400 512 -400 -128 WIRE -400 512 -496 512 WIRE -160 512 -160 480 WIRE -160 512 -400 512 WIRE -80 512 -80 320 WIRE -80 512 -160 512 WIRE 128 512 128 416 WIRE 128 512 -80 512 WIRE 256 512 256 480 WIRE 256 512 128 512 WIRE 336 512 336 464 WIRE 336 512 256 512 WIRE 416 512 416 400 WIRE 416 512 336 512 WIRE 496 512 496 480 WIRE 496 512 416 512 WIRE 592 512 592 400 WIRE 592 512 496 512 WIRE 912 512 912 416 WIRE 912 512 592 512 WIRE 1008 512 1008 352 WIRE 1008 512 912 512 WIRE 1184 512 1184 368 WIRE 1184 512 1008 512 WIRE 1328 512 1328 368 WIRE 1328 512 1184 512 WIRE -80 592 -80 512 WIRE -352 688 -352 -16 WIRE 816 688 816 400 WIRE 704 752 704 272 WIRE 704 752 -48 752 WIRE -48 800 -48 752 WIRE 304 832 256 832 WIRE 400 832 368 832 WIRE 528 832 480 832 WIRE 256 912 256 832 WIRE 256 912 208 912 WIRE 400 912 256 912 WIRE 528 912 528 832 WIRE 528 912 480 912 WIRE 576 912 528 912 WIRE -352 928 -352 768 WIRE -240 928 -352 928 WIRE -48 928 -48 880 WIRE 144 928 -48 928 WIRE 688 928 640 928 WIRE 816 928 816 768 WIRE 816 928 688 928 WIRE -352 992 -352 928 WIRE -240 992 -240 928 WIRE -48 1008 -48 928 WIRE 528 1024 528 912 WIRE -496 1168 -496 512 WIRE -352 1168 -352 1056 WIRE -352 1168 -496 1168 WIRE -240 1168 -240 1056 WIRE -240 1168 -352 1168 WIRE -48 1168 -48 1088 WIRE -48 1168 -240 1168 WIRE 528 1168 528 1088 WIRE 528 1168 -48 1168 FLAG -80 592 0 FLAG 80 112 SW FLAG 80 176 FB FLAG 80 240 VC FLAG -80 -16 Vin FLAG 688 928 gn FLAG 656 272 st FLAG 1136 -112 drain FLAG 784 -464 gp FLAG -240 928 VDDB FLAG -352 -304 VSSA SYMBOL PowerProducts\\LT1076 -80 176 R0 SYMATTR InstName U1 SYMBOL voltage -496 192 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL schottky 1024 352 R180 WINDOW 0 24 64 Left 2 WINDOW 3 -119 -8 Left 2 SYMATTR InstName D1 SYMATTR Value MBRS340 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1168 304 R0 SYMATTR InstName C1 SYMATTR Value 1000µ SYMBOL res 1312 272 R0 SYMATTR InstName R1 SYMATTR Value 2.5 SYMBOL Misc\\EuropeanResistor 400 304 R0 SYMATTR InstName R2 SYMATTR Value 2.2K SYMBOL Misc\\EuropeanResistor 864 160 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 3K SYMBOL cap 320 240 R0 SYMATTR InstName C2 SYMATTR Value 47n SYMBOL ind2 1040 128 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 100µ SYMATTR SpiceLine Rser=100m Rpar=1K SYMATTR Type ind SYMBOL diode 48 352 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 50 32 VTop 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL Misc\\EuropeanResistor -176 384 R0 SYMATTR InstName R4 SYMATTR Value 2K7 SYMBOL zener -240 336 R180 WINDOW 0 24 64 Left 2 WINDOW 3 -55 -51 Left 2 SYMATTR InstName D3 SYMATTR Value BZX84C15L SYMATTR Description Diode SYMATTR Type diode SYMBOL pnp -80 -384 R180 WINDOW 3 63 66 Left 2 SYMATTR Value BC557C SYMATTR InstName Q1 SYMBOL Misc\\EuropeanResistor -16 -672 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 0.1 SYMBOL Misc\\EuropeanResistor -16 -640 R0 SYMATTR InstName R6 SYMATTR Value 220 SYMBOL cap -32 -544 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 1n SYMBOL zener -224 -512 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMATTR Value EDZV13B SYMATTR Description Diode SYMATTR Type diode SYMBOL Misc\\EuropeanResistor 656 -320 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 2.2K SYMBOL Misc\\EuropeanResistor -416 -224 R0 SYMATTR InstName R8 SYMATTR Value 1K SYMBOL cap -416 -480 R0 SYMATTR InstName C4 SYMATTR Value 10µ SYMBOL Digital\\schmitt 288 -528 R0 WINDOW 39 -80 138 Left 2 WINDOW 40 -81 163 Left 2 SYMATTR SpiceLine Vlow=10.8 Vhigh=24 Vt=12.3 Vh=0.6 SYMATTR SpiceLine2 Td=30n Trise=30n SYMATTR InstName A1 SYMBOL diode 112 -288 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D7 SYMATTR Value 1N4148 SYMBOL pmos 1200 -384 M180 SYMATTR InstName M1 SYMATTR Value Si7465DP SYMBOL Misc\\EuropeanResistor 960 -480 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 120 SYMBOL pnp 528 400 M180 SYMATTR InstName Q2 SYMATTR Value BC557C SYMBOL Misc\\EuropeanResistor 480 384 R0 SYMATTR InstName R11 SYMATTR Value 2.2K SYMBOL diode 608 192 M0 SYMATTR InstName D5 SYMATTR Value 1N4148 SYMBOL Digital\\schmitt 704 -512 R0 WINDOW 39 -54 138 Left 2 WINDOW 40 142 165 Left 2 SYMATTR SpiceLine Vlow=10.8 Vhigh=24 Vt=12.3 Vh=0.6 SYMATTR SpiceLine2 Td=30n Trise=30n SYMATTR InstName A2 SYMBOL Misc\\EuropeanResistor 640 -464 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 1K SYMBOL cap 400 -608 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 112p SYMBOL diode 448 -512 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D8 SYMATTR Value 1N4148 SYMBOL Misc\\EuropeanResistor 640 -544 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 220 SYMBOL Digital\\schmitt 144 864 R0 WINDOW 39 9 155 Left 2 WINDOW 40 10 179 Left 2 SYMATTR SpiceLine Vlow=0 Vhigh=13 Vt=1.5 Vh=0.6 SYMATTR SpiceLine2 Td=30n Trise=30n SYMATTR InstName B1 SYMBOL nmos 864 320 R0 WINDOW 3 -17 239 Left 2 SYMATTR Value BSO350N08NS3 SYMATTR InstName M2 SYMBOL Misc\\EuropeanResistor -64 784 R0 SYMATTR InstName R13 SYMATTR Value 2.7K SYMBOL Digital\\schmitt 576 848 R0 WINDOW 39 9 155 Left 2 WINDOW 40 10 179 Left 2 SYMATTR SpiceLine Vlow=0 Vhigh=13 Vt=1.5 Vh=0.6 SYMATTR SpiceLine2 Td=30n Trise=30n SYMATTR InstName B2 SYMBOL Misc\\EuropeanResistor 496 896 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 1.5K SYMBOL diode 304 848 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D10 SYMATTR Value 1N4148 SYMBOL Misc\\EuropeanResistor 496 816 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 220 SYMBOL cap 512 1024 R0 SYMATTR InstName C6 SYMATTR Value 112p SYMBOL Misc\\EuropeanResistor 800 672 R0 SYMATTR InstName R17 SYMATTR Value 22 SYMBOL zener -336 1056 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D6 SYMATTR Value EDZV13B SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -256 992 R0 SYMATTR InstName C7 SYMATTR Value 10µ SYMBOL Misc\\EuropeanResistor -368 672 R0 SYMATTR InstName R18 SYMATTR Value 1K SYMBOL Misc\\EuropeanResistor -64 992 R0 SYMATTR InstName R19 SYMATTR Value 680 SYMBOL npn 192 320 M0 SYMATTR InstName Q3 SYMATTR Value BC547C SYMBOL Misc\\EuropeanResistor 240 384 R0 SYMATTR InstName R20 SYMATTR Value 1K SYMBOL Misc\\EuropeanResistor 240 -16 R0 SYMATTR InstName R21 SYMATTR Value 6.8K SYMBOL schottky 224 224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D11 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL Misc\\EuropeanResistor -16 -432 R0 SYMATTR InstName R22 SYMATTR Value 8.2K SYMBOL Misc\\EuropeanResistor 1152 -480 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 47 SYMBOL schottky 864 -544 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D12 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL Misc\\EuropeanResistor 320 368 R0 SYMATTR InstName R23 SYMATTR Value 10 TEXT -424 1272 Left 2 !.tran 0 10.2m 10m 1µ TEXT 88 848 Left 2 ;1/2 TC4228A TEXT 560 824 Left 2 ;1/2 TC4228A TEXT -8 176 Left 2 ;1 TEXT -8 240 Left 2 ;2 TEXT -80 280 Left 2 ;3 TEXT -8 112 Left 2 ;4 TEXT -88 72 Left 2 ;5 TEXT 1264 -384 Left 2 ;IRF9Z34N TEXT -112 -576 Left 2 ;1n cer TEXT 400 -616 Left 2 ;100p TEXT 536 1104 Left 2 ;100p TEXT 264 -480 Left 2 ;2 TEXT 376 -464 Left 2 ;7 TEXT 680 -424 Left 2 ;4 TEXT 792 -440 Left 2 ;5 TEXT 112 944 Left 2 ;4 TEXT 224 928 Left 2 ;5 TEXT 552 896 Left 2 ;2 TEXT 656 912 Left 2 ;7 TEXT 848 584 Left 2 ;2SK2723