Version 4
SHEET 1 1112 808
WIRE -240 -400 -480 -400
WIRE 32 -400 -240 -400
WIRE 560 -400 32 -400
WIRE -480 -384 -480 -400
WIRE 176 -384 -160 -384
WIRE 448 -384 176 -384
WIRE 480 -384 448 -384
WIRE -64 -368 -352 -368
WIRE 416 -368 -64 -368
WIRE 480 -368 480 -384
WIRE -352 -352 -352 -368
WIRE 32 -352 32 -400
WIRE 176 -352 176 -384
WIRE -480 -288 -480 -304
WIRE 480 -288 480 -304
WIRE 448 -272 448 -384
WIRE 448 -272 400 -272
WIRE -352 -256 -352 -272
WIRE -64 -176 -64 -368
WIRE -48 -176 -64 -176
WIRE 416 -176 416 -368
WIRE 416 -176 400 -176
WIRE -240 -160 -240 -400
WIRE 560 -160 560 -400
WIRE -48 -80 -192 -80
WIRE 512 -80 400 -80
WIRE -160 -64 -160 -384
WIRE 448 -64 448 -272
WIRE -160 16 -160 0
WIRE -48 16 -160 16
WIRE 448 16 448 0
WIRE 448 16 400 16
WIRE -160 32 -160 16
WIRE 448 32 448 16
WIRE -624 112 -736 112
WIRE -592 112 -624 112
WIRE -512 112 -592 112
WIRE -496 112 -512 112
WIRE -400 112 -416 112
WIRE -368 112 -400 112
WIRE -240 112 -240 -64
WIRE -240 112 -288 112
WIRE -160 112 -160 96
WIRE -160 112 -240 112
WIRE -48 112 -160 112
WIRE 448 112 448 96
WIRE 448 112 400 112
WIRE 560 112 560 -64
WIRE 560 112 448 112
WIRE 608 112 560 112
WIRE 704 112 688 112
WIRE 720 112 704 112
WIRE 816 112 800 112
WIRE 864 112 816 112
WIRE 944 112 864 112
WIRE 992 112 944 112
WIRE -736 128 -736 112
WIRE -240 128 -240 112
WIRE 560 128 560 112
WIRE 992 128 992 112
WIRE -592 144 -592 112
WIRE 864 144 864 112
WIRE -48 208 -192 208
WIRE 512 208 400 208
WIRE -736 224 -736 208
WIRE -592 224 -592 208
WIRE 864 224 864 208
WIRE 992 224 992 208
WIRE -240 240 -240 224
WIRE 560 240 560 224
WIRE -400 304 -400 112
WIRE -48 304 -400 304
WIRE 704 304 704 112
WIRE 704 304 400 304
WIRE -624 400 -624 112
WIRE -512 400 -512 112
WIRE -48 400 -512 400
WIRE 816 400 816 112
WIRE 816 400 400 400
WIRE 944 400 944 112
WIRE -624 496 -624 480
WIRE -48 496 -624 496
WIRE 944 496 944 480
WIRE 944 496 400 496
WIRE -624 512 -624 496
WIRE 944 512 944 496
WIRE -160 592 -208 592
WIRE -48 592 -96 592
WIRE 448 592 400 592
WIRE 544 592 512 592
WIRE -624 608 -624 592
WIRE 944 608 944 592
WIRE -160 688 -208 688
WIRE -48 688 -96 688
WIRE 448 688 400 688
WIRE 544 688 512 688
WIRE 32 768 32 752
WIRE 176 768 176 752
WIRE 320 768 320 752
FLAG -480 -288 0
FLAG 32 768 0
FLAG 320 768 0
FLAG 560 240 0
FLAG 480 -288 0
FLAG 864 224 0
FLAG 944 608 0
FLAG 992 224 0
FLAG 544 592 0
FLAG 544 688 0
FLAG -240 240 0
FLAG -592 224 0
FLAG -624 608 0
FLAG -736 224 0
FLAG -208 592 0
FLAG -208 688 0
FLAG -352 -256 0
FLAG -480 -400 IN
FLAG -352 -368 RUN
FLAG 992 112 OUT2
FLAG -736 112 OUT1
SYMBOL PowerProducts\\LTC3890-1 176 208 R0
SYMATTR InstName U1
SYMBOL voltage -480 -400 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL nmos 512 -160 R0
SYMATTR InstName Q1
SYMATTR Value Si4896DY
SYMBOL nmos 512 128 R0
SYMATTR InstName Q2
SYMATTR Value Si4896DY
SYMBOL diode 432 -64 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL cap 464 -368 R0
SYMATTR InstName C1
SYMATTR Value 4.7µ
SYMBOL cap 432 32 R0
SYMATTR InstName C2
SYMATTR Value .1µ
SYMBOL ind 592 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 7.2µ
SYMBOL res 704 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 7m
SYMBOL cap 848 144 R0
SYMATTR InstName C3
SYMATTR Value 150µ
SYMBOL res 928 384 R0
SYMATTR InstName R2
SYMATTR Value 280K
SYMBOL res 928 496 R0
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL cap 448 608 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
WINDOW 39 -22 36 VBottom 2
SYMATTR InstName C4
SYMATTR Value 220p
SYMATTR SpiceLine Rser=15K
SYMBOL cap 448 704 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C5
SYMATTR Value .001µ
SYMBOL nmos -192 -160 M0
SYMATTR InstName Q3
SYMATTR Value Si4896DY
SYMBOL nmos -192 128 M0
SYMATTR InstName Q4
SYMATTR Value Si4896DY
SYMBOL diode -176 -64 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL cap -176 32 R0
SYMATTR InstName C6
SYMATTR Value .1µ
SYMBOL ind -272 128 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 7.2µ
SYMBOL res -400 128 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 7m
SYMBOL cap -608 144 R0
SYMATTR InstName C7
SYMATTR Value 150µ
SYMBOL res -640 384 R0
SYMATTR InstName R5
SYMATTR Value 62.5K
SYMBOL res -640 496 R0
SYMATTR InstName R6
SYMATTR Value 20K
SYMBOL cap -96 608 M270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
WINDOW 39 -22 36 VBottom 2
SYMATTR InstName C8
SYMATTR Value 220p
SYMATTR SpiceLine Rser=15K
SYMBOL cap -96 704 M270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C9
SYMATTR Value .001µ
SYMBOL voltage -352 -368 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res 976 112 R0
SYMATTR InstName Rload2
SYMATTR Value 3.4
SYMBOL res -752 112 R0
SYMATTR InstName Rload1
SYMATTR Value .67
TEXT 680 656 Left 2 !.tran 1m startup