Datasheet Linear Technology LT3571IUD#PBF

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  Complete APD Bias Solution in 60mm2 with On-the-Fly Adjustable Current Limit and Adjustable Vapd &mdash LT Journal
  PDF, 632 Kb, File published: Mar 1, 2009
  Extract from the document

  DESIGN FEATURES L Complete APD Bias Solution in 60mm2
  with On-the-Fly Adjustable Current
  By Xin (Shin) Qi
  Limit and Adjustable VAPD
  Introduction
  The overriding factor limiting functionality in fiber-optic communication
  systems is available space. A compact
  APD (avalanche photo diode) bias
  solution with a high degree of feature
  integration is the key to breaking
  new ground in system size and performance. The LT3571 offers such a
  solution in a tiny 3mm Г— 3mm QFN
  package.
  The LT3571 combines a current
  mode step-up DC/DC converter and
  a high side fixed voltage drop APD
  current monitor with an integrated
  75V power switch and Schottky diode.
  The combination of a traditional voltage loop and a unique current loop
  allows customers to set an accurate
  APD current limit at any given bias
  voltage. The integrated high side current monitor provides an 8% accurate
  current that is proportional to the load …

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Manufacturer's Classification

• Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

Other Names:

LT3571IUDPBF, LT3571IUD PBF