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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Application Notes

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  High Voltage, Low Noise, DC/DC Converters &mdash AN118
  PDF, 2.6 Мб, Файл опубликован: 28 мар 2008
  Photomultipliers (PMT), avalanche photodiodes (APD), ultrasonic transducers, capacitance microphones, radiation detectors and similar devices require high voltage, low current bias. Additionally, the high voltage must be pristinely free of noise; well under a millivolt is a common requirement with a few hundred microvolts sometimes necessary. Normally, switching regulator configurations cannot achieve this performance level without employing special techniques. One aid to achieving low noise is that load currents rarely exceed 5mA. This freedom permits output filtering methods that are usually impractical.
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  Application Note 118
  March 2008
  High Voltage, Low Noise, DC/DC Converters
  A Kilovolt with 100 Microvolts of Noise
  Jim Williams This publication describes a variety of circuits featuring
  outputs from 200V to 1000V with output noise below 100ВµV
  measured in a 100MHz bandwidth. Special techniques
  enable this performance, most notably power stages
  optimized to minimize high frequency harmonic content.
  Although sophisticated, all examples presented utilize
  standard, commercially available magnetics—no custom
  components are required. This provision is intended to
  assist the user in quickly arriving at a produceable design.
  Circuits and their descriptions are presented beginning
  with the next ink.
  BEFORE PROCEEDING ANY FURTHER, THE READER
  IS WARNED THAT CAUTION MUST BE USED IN THE
  CONSTRUCTION, TESTING AND USE OF THE TEXT’S
  CIRCUITS. HIGH VOLTAGE, LETHAL POTENTIALS ARE
  PRESENT IN THESE CIRCUITS. EXTREME CAUTION
  MUST BE USED IN WORKING WITH, AND MAKING
  CONNECTIONS TO, THESE CIRCUITS. REPEAT: THESE
  CIRCUITS CONTAIN DANGEROUS, HIGH VOLTAGE …

Design Notes

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  Single Resistor Sets Positive or Negative Output for DC/DC Converter &mdash DN435
  PDF, 90 Кб, Файл опубликован: 15 янв 2008
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  Single Resistor Sets Positive or Negative Output
  for DC/DC Converter – Design Note 435
  Jesus Rosales
  Introduction
  Many electronic subsystems, such as VFD (vacuum
  flourecent display), TFT-LCD, GPS or DSL applications,
  require more than just a simple step-down or step-up
  DC/DC converter. They may require inverting, noninverting
  converters or both. Designers usually resort to different
  regulator ICs to control various polarity outputs, thus
  increasing the inventory list. The LTВ®3580 solves this
  problem by controlling either positive or negative outputs
  using the same feedback configuration. It contains an integrated 2A, 42V switch and packs many popular features
  such as soft-start, adjustable frequency, synchronization
  and a wide input range into a small footprint. The LT3580
  comes in an 8-pin 3mm Г— 3mm DFN or MSOP packages
  and can be used in multiple configurations such as boost,
  SEPIC, flyback and Cuk topologies.
  Sensing Output Voltage Has Never Been Easier
  The LT3580 has a novel FB pin architecture that simplifies the design of inverting and noninverting topologies.
  Namely, there are two internal error amplifiers; one senses
  positive outputs and the other negative. Additionally, the
  LT3580 has integrated the ground side feedback resistor …

Статьи

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  Internal 2A, 42V Switch, Adjustable 2.5MHz Operating Frequency and 3mm × 3mm Package Allow Boost Regulator to Fit Numerous Applications &mdash LT Journal
  PDF, 790 Кб, Файл опубликован: 14 янв 2008
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  DESIGN FEATURES L Internal 2A, 42V Switch, Adjustable
  2.5MHz Operating Frequency and
  3mm Г— 3mm Package Allow Boost
  Regulator to Fit Numerous Applications
  by Mathew Wich
  Introduction
  The world of switching DC/DC converters is awash with a dizzying array of
  product offerings. For a given application, much of the power supply design
  effort can be spent simply searching for
  the optimum combination of package
  size, switching frequency, input and
  output voltage range, and desirable
  features. In many cases, though, the
  LT3580 offers an optimal solution. It
  is the right choice for many diverse
  applications because of its smart
  combination of features, performance
  and ease of use.
  The LT3580 is a current control
  switching regulator available in The LT3580 supports
  a variety of converter
  configurations including
  boost, inverting, flyback, …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > Inverting Regulators | LCD/CCD/OLED Bias | SEPIC Regulators
• Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Варианты написания:

LT3580IMS8EPBF, LT3580IMS8E PBF