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  Efficient 48V Buck Mode LED Driver Delivers 50mA &mdash LT Journal
  PDF, 349 Kb, 档案已发布: Jan 14, 2008
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  L DESIGN FEATURES Efficient 48V Buck Mode
  LED Driver Delivers 50mA
  by Mohammad J. Navabi Introduction
  LEDs are efficient, compact and durable, and thus they are replacing
  other more traditional light sources
  in a variety of applications. One such
  application is signage. LEDs save
  energy, take less space and need less
  maintenance than other sign solutions, such as neon, incandescent or
  fluorescent lighting.
  LEDs require proper drivers to perform at their peak. A simple DC/DC
  converter is not quite enough. It must
  convert an input voltage to the LED
  string voltage, but it must do it at constant output current. It must also be
  able to dim the LEDs by adjusting the
  current applied to the LED string. Buck Mode
  Constant Current LED Driver The LT3590 is a high voltage current
  mode buck mode LED driver capable of
  providing a constant current to an LED
  string of up to 40V total voltage. It fea-tures internal compensation, an
  internal 55V power switch and an
  internal 55V Schottky diode (see
  Figure 1). The part can deliver up to …

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• Power Management > LED Driver ICs > Step-Down (Buck) LED Drivers

其他名称:

LT3590EDCPBF, LT3590EDC PBF