Datasheet Linear Technology LTC3402

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Design Notes

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  3MHz Micropower Synchronous Boost Converters Deliver 3W from Two Cells in a Tiny MSOP Package &mdash DN246
  PDF, 84 Kb, File published: Dec 2, 2001
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  advertisement 3MHz Micropower Synchronous Boost Converters Deliver
  3W from Two Cells in a Tiny MSOP Package
  Design Note 246
  Mark Jordan
  Portable electronic devices operating from one or more
  alkaline or nickel-metal-hydride cells require a boosted
  supply that is both small and efficient. Linear Technology’s new LTC ®3401 and LTC3402 are high frequency
  micropower synchronous boost converters that operate from an input voltage below 1V and deliver up to
  1A of output current from two cells. DC/DC efficiency
  can be as high as 97%. The operating frequency,
  output voltage and Burst Mode В® operation are all
  user programmable, allowing these products to п¬Ѓt in
  various applications where size considerations must
  be balanced against efficiency. Furthermore, all of this
  functionality is packed into a small, thermally enhanced
  MSOP-10 package.
  The LTC3401 is optimized for applications requiring less than 1.5W of total output power from two
  alkaline cells, whereas the LTC3402 is optimized for
  applications requiring 3W or less from two cells.
  High efficiency is achieved through internal features
  such as lossless current sensing, low gate charge,
  low RDS(ON) synchronous power switches (0.16О©
  NMOS, 0.18О© PMOS) and fast switching transitions …

Articles

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  3MHz Synchronous Boost Regulators Save Critical Board Space in Portable Applications &mdash LT Journal
  PDF, 228 Kb, File published: Nov 1, 2000
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  LINEAR TECHNOLOGY
  NOVEMBER 2000 IN THIS ISSUE…
  COVER ARTICLE
  3MHz Synchronous Boost Regulators
  Save Critical Board Space
  in Portable Applications . 1
  Mark Jordan Issue Highlights . 2
  LTCВ® in the News . 2
  DESIGN FEATURES
  SOT-23 10MHz Rail-to-Rail Op Amp
  Saves Board Space and Power . 5
  Glen Brisebois Low Distortion Rail-to-Rail Amplifiers
  Drive ADCs and Cables . 9
  William Jett, Danh Tran and Glen Brisebois Phase-Shift Full-Bridge Controller
  Enables Efficient, Isolated
  Power Conversion for
  High Power Applications . 11
  John Bazinet Zero-Drift Operational Amplifier
  Family in Small-Footprint Packages
  Features 3Вµ V Maximum DC Offset and
  30nV/В°C Maximum Drift . 15
  David Hutchinson Low Dropout Linear Li-Ion Charge
  Controllers Prevent Overcharging, …

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Manufacturer's Classification

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