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LTC4002 データシート(PDF) 21 Page - Linear Technology

部品番号 LTC4002
部品情報  PWM LED Driver and Boost, Flyback and SEPIC Controller
PDF  24 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC4002 データシート(HTML) 21 Page - Linear Technology

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LTC3783
3783f
OPERATIO
Figure 12. LED Buck Application
Using the LTC3783 for Buck Applications
As shown in Figure 12, high side current sensing also
allows the LTC3783 to control a functional buck con-
verter when load voltage is always sufficiently less than
VIN. In this scheme the input voltage to the inductor is
lowered by the load voltage. The boost converter now
sees a VIN’ = VIN – VLOAD, meaning the controller is now
boosting from (VIN – VLOAD) to VIN.
LTC3783
RUN
PWMIN
ITH
SS
VREF
FBP
FBN
FREQ
SYNC
VIN
OV/FB
PWMOUT
ILIM
GATE
SENSE
INTVCC
GND
VIN
6V TO 36V
LED STRING
GND
3783 F12



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