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  A Compact Dual Step-Down Converter with VOUT Tracking and Sequencing &mdash DN403
  PDF, 97 Kb, Datei veröffentlicht: Nov 7, 2006
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  advertisement A Compact Dual Step-Down Converter with VOUT Tracking and
  Sequencing – Design Note 403
  Tiger Zhou and David Canny
  Introduction
  Typical industrial and automotive applications require
  multiple high current, low voltage power supply solutions
  to drive everything from disc drives to microprocessors. For many of these applications, particularly those
  that have size constraints, the LT3501В® dual step-down
  converter is an attractive solution because it’s compact
  and inexpensive compared to a 2-chip solution. The dual
  converter accommodates a 3V to 25V input voltage range
  and is capable of supplying up to 3A per channel. The
  circuit in Figure 1 produces 3.3V and 1.8V.
  LT3501 Dual Converter Features The LT3501 is feature-rich and comes with internal 3.5A
  switches and sense resistors to minimize solution size
  and cost. The LT3501 operates at a п¬Ѓxed frequency between
  250kHz and 1.5MHz, programmed using a single resistor or synchronized to an external clock, allowing
  optimization of efficiency and solution size. A 180° phase relationship between the channels is
  maintained to reduce input voltage ripple and input
  capacitor size. Independent input voltage, feedback, soft-start and
  power good functions for each converter simplify the
  implementation of all the tracking and sequencing
  options available. Minimum input-to-output voltage ratios are extended …

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• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Internal Power Switch Buck

Andere Namen:

LT3501EFEPBF, LT3501EFE PBF