Version 4
SHEET 1 1268 680
WIRE -96 80 -240 80
WIRE 192 80 -96 80
WIRE 240 80 192 80
WIRE 368 80 320 80
WIRE 192 144 192 80
WIRE -96 160 -96 80
WIRE 368 208 368 80
WIRE 368 208 336 208
WIRE 48 288 32 288
WIRE 352 288 336 288
WIRE 432 288 416 288
WIRE -96 368 -96 240
WIRE 48 368 -96 368
WIRE 560 368 336 368
WIRE -96 384 -96 368
WIRE 560 384 560 368
WIRE 192 448 192 432
WIRE -96 480 -96 464
WIRE 560 528 560 448
FLAG 432 288 0
FLAG 192 448 0
FLAG 32 288 0
FLAG -96 480 0
FLAG 560 528 0
SYMBOL PowerProducts\\LTC3490 192 288 R0
SYMATTR InstName U1
SYMBOL ind 224 96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 4.7µ
SYMBOL cap 416 272 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 4.7µ
SYMBOL LED 544 384 R0
WINDOW 3 27 67 Left 0
SYMATTR Value LXHL-BW02
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -112 368 R0
SYMATTR InstName R2
SYMATTR Value 33K
SYMBOL res -112 144 R0
SYMATTR InstName R1
SYMATTR Value 24k
TEXT -8 512 Left 0 !.tran 0 10800 0 1 uic
TEXT -160 16 Left 0 !c12 n001 0 2.3kf ic=2.5v rser=7m