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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

• Download
  VID Voltage Programmer for Intel Mobile Processors &mdash LT Journal
  PDF, 250 Kb, File published: Aug 1, 1998
  Extract from the document

  DESIGN FEATURES VID Voltage Programmer
  for Intel Mobile Processors
  Microprocessor manufacturers’
  relentless push for higher speed and
  lower power dissipation, especially in
  areas of mobile laptop computer processors, is forcing supply voltages to
  these processors to a level previously
  thought impossible or impractical. In
  fact, the supply voltage has become
  so critical that different microprocessors demand different yet precise
  supply voltage levels in order to function optimally.
  To accommodate this new generation of microprocessors, LTC
  introduces the LTC1706-19 VID
  (voltage identification) voltage programmer. This device is a precision,
  digitally programmable resistive
  divider designed for use with an entire family of LTC’s DC/DC converters
  with onboard 1.19V references. These
  converters include the LTC1433,
  LTC1434, LTC1435, LTC1435A,
  LTC1436, L TC1438, LTC1439,
  LTC1538-AUX, LTC1539 and
  LTC1624. (Consult the factory for
  future compatible DC/DC converter VIN …

• Download
  Wide-Input-Range, Low Voltage Flyback Regulator &mdash LT Journal
  PDF, 218 Kb, File published: May 1, 1998
  Extract from the document

  DESIGN IDEAS Wide-Input-Range, Low Voltage
  by Kurk Mathews
  Flyback Regulator
  This constant-frequency current
  mode controller includes a high-side
  differential current sense amplifier
  and a floating high current N-Channel MOSFET driver. In the buck mode,
  an external bootstrap capacitor
  between the BOOST and SW pins
  works in conjunction with the internal 5.6V regulator and diode to provide
  a regulated supply for a high-side
  driver. In the boost, buck-boost or
  flyback mode, the SW pin is grounded,
  providing drive for a low-side MOSFET.
  An example of a wide-input-range
  flyback is shown in Figure 2. The Many new switching regulators are
  designed with a specific application
  or topology in mind. If your requirements happen to fall within these
  parameters, all is well. Unfortunately,
  when faced with unusual requirements, the designer is often forced to
  choose bare-bones, universal regulators. The LTC1624 overcomes
  these issues by providing a full featured regulator that can operate in
  the step-down (buck), step-up (boost), …

Model Line

Manufacturer's Classification

• Power Management > Switching Regulator > Inverting Regulators | SEPIC Regulators
• Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers

Other Names:

LTC1624CS8PBF, LTC1624CS8 PBF