Version 4 SHEET 1 908 824 WIRE 720 -64 -304 -64 WIRE -384 80 -464 80 WIRE -304 80 -304 -64 WIRE -304 80 -384 80 WIRE -192 80 -304 80 WIRE -80 80 -192 80 WIRE -64 80 -80 80 WIRE 32 80 16 80 WIRE 64 80 32 80 WIRE 160 80 128 80 WIRE 256 80 160 80 WIRE 352 80 256 80 WIRE 368 80 352 80 WIRE 464 80 448 80 WIRE 512 80 464 80 WIRE 160 96 160 80 WIRE 256 96 256 80 WIRE -464 112 -464 80 WIRE -384 128 -384 80 WIRE -192 144 -192 80 WIRE -80 144 -80 80 WIRE 32 144 32 80 WIRE 160 176 160 160 WIRE -304 208 -304 80 WIRE -256 208 -304 208 WIRE 256 208 256 176 WIRE 256 208 96 208 WIRE -464 224 -464 192 WIRE -384 224 -384 192 WIRE 256 224 256 208 WIRE -304 272 -304 208 WIRE -256 272 -304 272 WIRE 128 272 96 272 WIRE 256 320 256 304 WIRE -304 336 -304 272 WIRE -256 336 -304 336 WIRE 128 336 128 272 WIRE 128 336 96 336 WIRE 720 336 720 -64 WIRE 720 336 512 336 WIRE -304 400 -304 336 WIRE -256 400 -304 400 WIRE 352 400 352 80 WIRE 352 400 96 400 WIRE -384 464 -480 464 WIRE -256 464 -320 464 WIRE 464 464 464 80 WIRE 464 464 96 464 WIRE -464 528 -480 528 WIRE -336 528 -384 528 WIRE -256 528 -272 528 WIRE 128 528 96 528 WIRE 224 528 208 528 WIRE -80 592 -80 576 FLAG 224 528 0 FLAG -80 592 0 FLAG -480 464 0 FLAG -480 528 0 FLAG 160 176 0 FLAG 256 320 0 FLAG -464 224 0 FLAG -384 224 0 FLAG 256 80 OUT FLAG -464 80 IN SYMBOL PowerProducts\\LT3477 -80 336 R0 SYMATTR InstName U1 SYMBOL ind -80 96 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName L1 SYMATTR Value 4.7µ SYMATTR SpiceLine Rser=.025 SYMBOL res 112 512 M90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 6.81K SYMBOL cap -320 448 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value .033µ SYMBOL schottky 64 96 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D1 SYMATTR Value MBRS140 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 144 96 R0 WINDOW 0 27 12 Left 0 WINDOW 3 30 54 Left 0 SYMATTR InstName C2 SYMATTR Value 4.7µ SYMATTR SpiceLine Rser=25m SYMBOL res 352 96 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R2 SYMATTR Value 0.33 SYMBOL res 240 208 R0 SYMATTR InstName R3 SYMATTR Value 49.9K SYMBOL res 240 80 R0 SYMATTR InstName R4 SYMATTR Value 1Meg SYMBOL voltage -464 96 R0 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL cap -272 512 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C3 SYMATTR Value 4700p SYMBOL res -480 512 M90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R6 SYMATTR Value 1K SYMBOL cap -400 128 R0 SYMATTR InstName C4 SYMATTR Value 3.3µ SYMBOL LED 496 80 R0 WINDOW 3 58 1 Left 0 SYMATTR Value LXHL-BW02 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 496 144 R0 WINDOW 3 58 3 Left 0 SYMATTR Value LXHL-BW02 SYMATTR InstName D3 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 496 208 R0 WINDOW 3 64 2 Left 0 SYMATTR Value LXHL-BW02 SYMATTR InstName D4 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 496 272 R0 WINDOW 3 61 2 Left 0 SYMATTR Value LXHL-BW02 SYMATTR InstName D6 SYMATTR Description Diode SYMATTR Type diode TEXT 288 512 Left 0 !.tran 4m startup TEXT -16 24 Bottom 0 ;LT3477_Boost - 3A, Monolithic Boost LED Driver DC/DC Converter\nInput: 5V Output: 330mA through eight series 1W 3.5V LEDs TEXT -632 600 Left 0 ;Note:\n If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n Component substitution and printed circuit board layout may significantly affect circuit performance or reliability\n Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts\n Copyright © 2006 Linear Technology Inc. All rights reserved.