Version 4 SHEET 1 1076 708 WIRE 176 32 16 32 WIRE 272 32 176 32 WIRE 352 32 272 32 WIRE 432 32 352 32 WIRE 16 48 16 32 WIRE 272 64 272 32 WIRE 352 64 352 32 WIRE 432 64 432 32 WIRE 176 128 176 32 WIRE 208 128 176 128 WIRE 16 144 16 128 WIRE -128 224 -272 224 WIRE -48 224 -128 224 WIRE 48 224 -48 224 WIRE 96 224 48 224 WIRE 208 224 176 224 WIRE 528 224 496 224 WIRE 640 224 608 224 WIRE 752 224 640 224 WIRE 832 224 752 224 WIRE 928 224 832 224 WIRE -272 240 -272 224 WIRE -128 240 -128 224 WIRE -48 240 -48 224 WIRE 48 240 48 224 WIRE 640 240 640 224 WIRE 752 240 752 224 WIRE 832 240 832 224 WIRE 928 240 928 224 WIRE -272 336 -272 320 WIRE -128 336 -128 304 WIRE -48 336 -48 304 WIRE 48 336 48 320 WIRE 48 336 -48 336 WIRE 208 336 48 336 WIRE 640 336 640 320 WIRE 640 336 496 336 WIRE 752 336 752 304 WIRE 752 336 640 336 WIRE 832 336 832 304 WIRE 928 336 928 320 WIRE 48 352 48 336 WIRE 640 352 640 336 WIRE 352 400 352 384 WIRE 48 448 48 432 WIRE 640 448 640 432 FLAG 16 144 0 FLAG 352 400 0 FLAG 832 336 0 FLAG 928 336 0 FLAG 16 32 IN FLAG 928 224 OUT1 FLAG 640 448 0 FLAG -128 336 0 FLAG -272 336 0 FLAG -272 224 OUT2 FLAG 48 448 0 SYMBOL VOLTAGE 16 32 R0 SYMATTR InstName V1 SYMATTR Value 2.8 SYMBOL polcap 816 240 R0 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL ind 512 240 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 2.2µ SYMBOL res 624 336 R0 SYMATTR InstName R1 SYMATTR Value 301K SYMBOL res 624 224 R0 SYMATTR InstName R2 SYMATTR Value 604K SYMBOL polcap -144 240 R0 SYMATTR InstName C2 SYMATTR Value 4.7µ SYMBOL ind 192 240 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 4.7µ SYMBOL res 32 336 R0 SYMATTR InstName R3 SYMATTR Value 280K SYMBOL res 32 224 R0 SYMATTR InstName R4 SYMATTR Value 887K SYMBOL cap -64 240 R0 SYMATTR InstName C3 SYMATTR Value 68p SYMBOL cap 736 240 R0 SYMATTR InstName C4 SYMATTR Value 33p SYMBOL PowerProducts\\LTC3548 352 224 R0 SYMATTR InstName U1 SYMBOL res 912 224 R0 SYMATTR InstName Rload1 SYMATTR Value 5 SYMBOL res -288 224 R0 SYMATTR InstName Rload2 SYMATTR Value 20 TEXT 272 440 Left 2 !.tran 1m startup