Version 4 SHEET 1 1640 1236 WIRE -272 -464 -512 -464 WIRE 64 -464 -272 -464 WIRE 640 -464 64 -464 WIRE -512 -448 -512 -464 WIRE -208 -448 -336 -448 WIRE 176 -448 -208 -448 WIRE 560 -448 176 -448 WIRE 672 -448 560 -448 WIRE -336 -432 -336 -448 WIRE -208 -432 -208 -448 WIRE 304 -432 -112 -432 WIRE 528 -432 304 -432 WIRE 672 -432 672 -448 WIRE 672 -432 528 -432 WIRE 560 -416 560 -448 WIRE 672 -416 672 -432 WIRE 64 -400 64 -464 WIRE 176 -400 176 -448 WIRE 304 -400 304 -432 WIRE -512 -352 -512 -368 WIRE -336 -352 -336 -368 WIRE -208 -336 -208 -352 WIRE -16 -336 -208 -336 WIRE 560 -336 496 -336 WIRE 672 -336 672 -352 WIRE -272 -320 -272 -464 WIRE 640 -320 640 -464 WIRE -16 -240 -224 -240 WIRE 592 -240 496 -240 WIRE -112 -224 -112 -432 WIRE 528 -224 528 -432 WIRE -112 -144 -112 -160 WIRE -16 -144 -112 -144 WIRE 528 -144 528 -160 WIRE 528 -144 496 -144 WIRE -112 -128 -112 -144 WIRE 528 -128 528 -144 WIRE -736 -48 -864 -48 WIRE -656 -48 -736 -48 WIRE -560 -48 -656 -48 WIRE -528 -48 -560 -48 WIRE -432 -48 -448 -48 WIRE -272 -48 -272 -224 WIRE -272 -48 -432 -48 WIRE -112 -48 -112 -64 WIRE -112 -48 -272 -48 WIRE -16 -48 -112 -48 WIRE 528 -48 528 -64 WIRE 528 -48 496 -48 WIRE 640 -48 640 -224 WIRE 640 -48 528 -48 WIRE 816 -48 640 -48 WIRE 848 -48 816 -48 WIRE 960 -48 928 -48 WIRE 992 -48 960 -48 WIRE 1088 -48 992 -48 WIRE -864 -32 -864 -48 WIRE -736 -32 -736 -48 WIRE -272 -32 -272 -48 WIRE 640 -32 640 -48 WIRE 992 -32 992 -48 WIRE 1088 -32 1088 -48 WIRE -432 48 -432 -48 WIRE -16 48 -224 48 WIRE 592 48 496 48 WIRE 816 48 816 -48 WIRE -864 64 -864 48 WIRE -736 64 -736 32 WIRE 992 64 992 32 WIRE 1088 64 1088 48 WIRE -272 80 -272 64 WIRE 640 80 640 64 WIRE -432 144 -432 128 WIRE -16 144 -432 144 WIRE 816 144 816 128 WIRE 816 144 496 144 WIRE -432 160 -432 144 WIRE 816 160 816 144 WIRE -656 240 -656 -48 WIRE -560 240 -560 -48 WIRE -432 240 -432 224 WIRE -432 240 -560 240 WIRE -320 240 -432 240 WIRE -16 240 -240 240 WIRE 624 240 496 240 WIRE 816 240 816 224 WIRE 816 240 704 240 WIRE 960 240 960 -48 WIRE 960 240 816 240 WIRE -656 336 -656 320 WIRE -368 336 -656 336 WIRE -16 336 -368 336 WIRE 688 336 496 336 WIRE 768 336 688 336 WIRE 800 336 768 336 WIRE 896 336 880 336 WIRE -656 352 -656 336 WIRE 768 368 768 336 WIRE -368 432 -368 336 WIRE -288 432 -368 432 WIRE -16 432 -224 432 WIRE 592 432 496 432 WIRE 688 432 688 336 WIRE 688 432 656 432 WIRE -656 448 -656 432 WIRE -560 528 -560 240 WIRE -208 528 -288 528 WIRE -16 528 -208 528 WIRE 544 528 496 528 WIRE -288 544 -288 528 WIRE -560 624 -560 608 WIRE -416 624 -560 624 WIRE -16 624 -32 624 WIRE 512 624 496 624 WIRE -560 640 -560 624 WIRE -288 640 -288 624 WIRE 512 720 496 720 WIRE -560 736 -560 720 WIRE -16 816 -128 816 WIRE -16 912 -32 912 WIRE 512 912 496 912 WIRE -16 1008 -112 1008 WIRE 64 1088 64 1072 WIRE 304 1088 304 1072 WIRE 416 1088 416 1072 WIRE -416 1120 -416 624 WIRE 176 1120 176 1072 WIRE 176 1120 -416 1120 WIRE 304 1168 304 1152 WIRE -112 1200 -112 1008 WIRE 960 1200 960 240 WIRE 960 1200 -112 1200 WIRE -128 1216 -128 816 WIRE 768 1216 768 448 WIRE 768 1216 -128 1216 WIRE -208 1232 -208 528 WIRE 544 1232 544 528 WIRE 544 1232 -208 1232 FLAG -512 -352 0 FLAG -512 -464 IN FLAG 640 80 0 FLAG -272 80 0 FLAG -32 624 0 FLAG 512 624 0 FLAG 64 1088 0 FLAG 416 1088 0 FLAG 304 1168 0 FLAG -656 448 0 FLAG -864 64 0 FLAG -736 64 0 FLAG -864 -48 OUT1 FLAG -560 736 0 FLAG 1088 64 0 FLAG 992 64 0 FLAG 1088 -48 OUT2 FLAG -32 912 0 FLAG 896 336 0 FLAG 512 912 0 FLAG 512 720 0 FLAG -336 -352 0 FLAG 672 -336 0 FLAG -288 640 0 SYMBOL PowerProducts\\LTC3811 240 336 R0 SYMATTR InstName U1 SYMBOL voltage -512 -464 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL nmos 592 -320 R0 SYMATTR InstName Q1 SYMATTR Value RJK0305DPB SYMBOL nmos -224 -320 M0 SYMATTR InstName Q2 SYMATTR Value RJK0305DPB SYMBOL nmos 592 -32 R0 SYMATTR InstName Q3 SYMATTR Value RJK0301DPB SYMBOL nmos -224 -32 M0 WINDOW 3 52 70 Left 2 SYMATTR Value RJK0301DPB SYMATTR InstName Q4 SYMBOL cap 512 -128 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap -128 -128 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL schottky -128 -224 R0 SYMATTR InstName D1 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 512 -224 R0 SYMATTR InstName D2 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL ind 832 -32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 11 56 VBottom 2 WINDOW 39 -41 58 VTop 2 SYMATTR InstName L1 SYMATTR Value .4µ SYMATTR SpiceLine Rser=.5m SYMBOL ind -432 -32 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 11 56 VBottom 2 WINDOW 39 -41 58 VTop 2 SYMATTR InstName L2 SYMATTR Value .4µ SYMATTR SpiceLine Rser=.5m SYMBOL res 800 32 R0 SYMATTR InstName R1 SYMATTR Value 1.21K SYMBOL cap 800 160 R0 SYMATTR InstName C3 SYMATTR Value .68µ SYMBOL res 720 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1.21K SYMBOL res -448 32 R0 SYMATTR InstName R3 SYMATTR Value 1.21K SYMBOL cap -448 160 R0 SYMATTR InstName C4 SYMATTR Value .68µ SYMBOL res -336 224 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 1.21K SYMBOL res 544 -432 R0 SYMATTR InstName R5 SYMATTR Value 100K SYMBOL res -224 -448 R0 SYMATTR InstName R6 SYMATTR Value 100K SYMBOL cap 288 1088 R0 SYMATTR InstName C5 SYMATTR Value .001µ SYMBOL res -672 224 R0 SYMATTR InstName R7 SYMATTR Value 11.8K SYMBOL res -672 336 R0 SYMATTR InstName R8 SYMATTR Value 4.99K SYMBOL cap -288 448 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -26 28 VBottom 2 SYMATTR InstName C6 SYMATTR Value 100p SYMATTR SpiceLine Rser=56K Cpar=33p SYMBOL cap -752 -32 R0 SYMATTR InstName C7 SYMATTR Value 680µ SYMATTR SpiceLine Rser=5m SYMBOL res -576 512 R0 SYMATTR InstName R9 SYMATTR Value 2.43K SYMBOL res -576 624 R0 SYMATTR InstName R10 SYMATTR Value 1.21K SYMBOL cap 976 -32 R0 SYMATTR InstName C8 SYMATTR Value 680µ SYMATTR SpiceLine Rser=5m SYMBOL res 752 464 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R11 SYMATTR Value 7.5K SYMBOL res 784 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R12 SYMATTR Value 4.99K SYMBOL cap 656 448 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -26 27 VBottom 2 SYMATTR InstName C9 SYMATTR Value 100p SYMATTR SpiceLine Rser=56K Cpar=33p SYMBOL cap -352 -432 R0 SYMATTR InstName C10 SYMATTR Value 1µ SYMBOL cap 656 -416 R0 SYMATTR InstName C11 SYMATTR Value 4.7µ SYMBOL voltage -288 528 R0 SYMATTR InstName V2 SYMATTR Value 2 SYMBOL res 1072 -48 R0 SYMATTR InstName Rload2 SYMATTR Value .1 SYMBOL res -880 -48 R0 SYMATTR InstName Rload1 SYMATTR Value .13 TEXT 1008 448 Left 2 !.tran 300u startup