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  Triple Output LED Driver Works with Inputs to 60V and Delivers 3000:1 PWM Dimming &mdash LT Journal
  PDF, 325 Kb, Archivo publicado: jun 1, 2009
  Extracto del documento

  L DESIGN IDEAS Triple Output LED Driver Works
  with Inputs to 60V and Delivers
  3000:1 PWM Dimming
  by Hua (Walker) Bai
  Introduction
  The LT3492 is a 60V triple output
  LED driver for high input and/or high
  output voltage backlighting or direct
  lighting applications. A single 4mm Г—
  5mm IC can drive a large number of
  LEDs, reducing overall solution cost
  when compared to less capable drivers.
  A built-in gate driver for a disconnect
  PMOS in series with the LED string,
  along with other techniques, enables
  a 3000:1 PWM dimming ratio. When
  coupled with the part’s analog dimming functions, the overall dimming
  ratio can be as high as 30,000:1. The
  LT3492 can be configured into buckmode, boost-mode or buck-boost
  mode, depending on the available input voltage source and the number and
  configuration of LEDs to be driven. PVIN
  43V to 58V TG1 ISP2 ISP3 330mО© 330mО© 330mО© ISN1 ISN2 ISN3 TG2 M1 M2 68.1k
  0.3A 8 LEDs C4 …

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• Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver

Otros nombres:

LT3492IUFDPBF, LT3492IUFD PBF