Datasheet Linear Technology LT4356-1 — Даташит

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Экологический статус

Статьи

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  100V Surge Stopper Protects Components from 300V Transients &mdash LT Journal
  PDF, 2.3 Мб, Файл опубликован: 18 окт 2012
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  100V Surge Stopper Protects Components from
  300V Transients
  Hamza Salman Afzal High voltage transients in automotive and
  industrial systems are common and can last
  from microseconds to hundreds of milliseconds,
  sending significant energy downsteam. Transient
  causes include automotive load dumps, and
  spikes caused by load steps and parasitic
  inductance. To avoid the risk of failure, all
  electronics in these systems must either be robust
  enough to directly withstand the transient energy
  spikes, or they must be protected from them.
  The LT4356 surge stopper is a dramatic
  performance upgrade over traditional,
  passive clamp protection techniques. It
  actively protects downstream components
  from overvoltage by regulating the gate
  of a pass MOSFET and it limits current
  with the help of a standard sense resistor.
  Figure 1 shows a typical 12V application.
  The LT4356 has a rated maximum of
  100V with an operating voltage range
  of 4V to 80V, making it ideal for protecting downstream electronics in a …

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  Surge Stopper Protects Sensitive Electronics from High Voltage Transients &mdash LT Journal
  PDF, 310 Кб, Файл опубликован: 14 янв 2008
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  L DESIGN FEATURES Surge Stopper Protects Sensitive
  Electronics from High Voltage Transients
  by James Herr
  Introduction VOUT
  20V/DIV 27V CLAMP 12V
  100ms/DIV Figure 2. During overcurrent or overvoltage
  conditions, the current amplifier (IA) or the
  voltage amplifier (VA) is called into action,
  appropriately limiting the output current
  or voltage. In the case of an overvoltage
  condition, the load circuit continues to
  operate, noticing little more than a slight
  increase in supply voltage. 24 SNS 50mV GATE LT4356-1 OUT 30µA – +
  IA AOUT FB VA SHDN
  1.25V 1.25V AMPLIFIER + 12V VCC – VIN
  20V/DIV OUTPUT
  TO LOAD – 80V INPUT SURGE SUPPLY
  INPUT + In automotive and industrial applications, electronics are subjected to high
  voltage power supply spikes that can
  last from a few microseconds to hundreds of milliseconds. For instance,
  microsecond supply spikes result from
  load steps transmitted via parasitic
  wiring inductance. Longer surges, …

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  Surge Stopper IC Simplifies Design of Intrinsic Safety Barrier for Electronics Destined for Hazardous Environments &mdash LT Journal
  PDF, 471 Кб, Файл опубликован: 1 сен 2009
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  DESIGN FEATURES L Surge Stopper IC Simplifies Design of
  Intrinsic Safety Barrier for Electronics
  Destined for Hazardous Environments
  by Murphy Pickard, Hach Co. Introduction
  As applications for electronic instrumentation proliferate, an increasing
  number of applications require equipment safe enough to operate in
  hazardous environments. Chemical
  plants, refineries, oil/gas wells, coal,
  and textile operations are all examples
  of potentially explosive environments
  that use electronic instrumentation.
  In order to operate safely in such environments, instrumentation must be
  made explosion proof.
  Companies that supply apparatus to these markets must integrate
  protection into the design. It falls to
  the electronic designer to consider
  available safety measures and implement them with minimum cost and
  impact on proper circuit operation.
  This is a daunting task from a design
  standpoint, made even more difficult
  by the number of hazardous environment standards that must be met to
  satisfy global or domestic markets.
  Although the various standards are …

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