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CAT4139 22V High Current Boost White LED Driver

  • 2013-09-22
  • 180.49KB
  • Points it Requires : 2

CAT4139 pdf,datasheet22V High Current Boost White LED DriverThe CAT4139 is a DC/DC step-up converter that delivers anaccurate constant current ideal for driving LEDs. Operation at a fixedswitching frequency of 1 MHz allows the device to be used with smallvalue external ceramic capacitors and inductor. LEDs connected inseries are driven with a regulated current set by the external resistorR1. The CAT4139 is ideal for driving parallel strings of up to fivewhite LEDs in series or up to 22 V.

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