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Application Notes

• Download
  Linear Technology Magazine Circuit Collection, Volume IV &mdash AN84
  PDF, 2.4 Mb, File published: Apr 1, 2000
  Application Note 84 is a collection of "power circuits" from the years 1996 through 1998 as seen in the pages of Linear Technology magazine. This Application Note collects circuits that can output tens of amps to circuits that can operate a handheld device for several years. In addition to a wide variety of traditional power supply circuits (Buck, Boost, Inverting, Flyback, Linear Regulators, etc.) we include circuits for charging batteries, several Power Management circuits as well as circuits that highlight a very low noise switching regulator.
  Extract from the document

  Application Note 84
  April 2000 Linear Technology Magazine Circuit Collection, Volume IV
  Power Products
  Richard Markell, Editor
  INTRODUCTION
  Application Note 84 is the fourth in a series that excerpts
  useful circuits from Linear Technology magazine to preserve them for posterity. This application note highlights
  “power” circuits from issue VI:1 (February 1996) through
  issue VIII:4 (November 1998). Another application note
  will feature data conversion, interface and signal processing circuits from the same era. Like its predecessor, AN 66,
  this Application Note includes circuits that can power
  most any system you can imagine, from “server” power
  supplies that generate in excess of 50 amps to micropower systems for portable and handheld equipment.
  Also included are power converters that can be voltage programmed using Intel’s VID code. Charge pump converters, linear regulators and battery charger circuits are
  included here, with Li-Ion batteries receiving extra attention. There are, of course, circuits that cannot be so simply
  categorized. Come browse. I’ll get out of the way and let
  the authors describe their creations.
  Note: Article Titles appear in this application note exactly
  as they originally appeared in Linear Technology magazine. This may result in some inconsistency in the usage
  of terminology. TABLE OF CONTENTS
  Introduction . 1
  REGULATORS—SWITCHING (BUCK)
  New LTCВ®1435–LTC1439 DC/DC Controllers Feature Value and Performance . 4 …

Articles

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  LT1610 Micropower Step-Up DC/DC Converter Runs at 1.7MHz &mdash LT Journal
  PDF, 215 Kb, File published: May 1, 1998
  Extract from the document

  DESIGN IDEAS LT1610 Micropower Step-Up DC/DC
  Converter Runs at 1.7MHz by Steve Pietkiewicz
  Single-Cell to 3V
  The LT1610’s input voltage ranges DC/DC Converter Introduction
  When designing portable electronics,
  be it a pager, handheld computer or
  cell phone, “footprint” is one of the
  most important specifications of any
  component. Most such products use
  at least one DC/DC converter to generate regulated voltages from a battery.
  The LT1610, a micropower DC/DC
  converter IC, addresses the issue of
  footprint in several ways. First, the
  switching frequency is 1.7MHz,
  allowing the use of small, inexpensive, minimal-height inductors and
  capacitors. Second, the frequencycompensation components have been
  integrated, eliminating the requirement for an external RC network in
  most applications. Finally, the device
  comes in LTC’s 8-lead MSOP package, one-half the size of the 8-lead SO
  package.
  L1
  4.7ВµH 3 +
  1 CELL C1 …

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Manufacturer's Classification

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