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Параметры

Экологический статус

Design Notes

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  Electronic Circuit Breaker in Small DFN Package Eliminates Sense Resistor &mdash DN402
  PDF, 164 Кб, Файл опубликован: 31 окт 2006
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  advertisement Electronic Circuit Breaker in Small DFN Package Eliminates Sense
  Resistor – Design Note 402
  SH Lim
  Introduction
  Traditionally, an Electronic Circuit Breaker (ECB) comprises a MOSFET, a MOSFET controller and a current sense
  resistor. The LTCВ® 4213 does away with the sense resistor
  by using the RDS(ON) of the external MOSFET. The result
  is a simple, small solution that offers a significant low
  insertion loss advantage at low operating load voltage.
  The LTC4213 features two circuit breaking responses to
  varying overload conditions with three selectable trip
  thresholds and a high side drive for an external N-channel MOSFET switch.
  Overcurrent Protection
  The SENSEP and SENSEN pins monitor the load current via the RDS(ON) of the external MOSFET and serve
  as inputs to two internal comparators—SLOWCOMP
  and FASTCOMP—with trip points at VCB and VCB(FAST),
  respectively. The circuit breaker trips when an overcurrent fault causes a substantial voltage drop across the
  MOSFET. An overload current exceeding VCB/RDS(ON)
  causes SLOWCOMP to trip the circuit breaker after a 16Вµs
  delay. In the event of a severe overload or short-circuit
  current exceeding VCB(FAST)/RDS(ON), the FASTCOMP
  trips the circuit breaker within 1Вµs, protecting both the
  MOSFET and the load. …

Статьи

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  Small DFN Electronic Circuit Breaker Eliminates Sense Resistor &mdash LT Journal
  PDF, 188 Кб, Файл опубликован: 10 июн 2005
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  DESIGN IDEAS Small DFN Electronic Circuit Breaker
  by SH Lim
  Eliminates Sense Resistor
  Introduction
  Traditionally, an Electronic Circuit
  Breaker (ECB) comprises a MOSFET,
  a MOSFET controller and a current
  sense resistor. The LTC4213 is a new
  electronic circuit breaker that does
  away with the sense resistor by instead using the RDS(ON) of the external
  MOSFET. The result is a simple, small
  solution that offers significant low insertion loss advantage at low operating
  load voltage. The LTC4213 features
  two circuit breaking responses to
  varying over load conditions with three
  selectable trip thresholds and a high
  side drive for an external N-channel
  MOSFET switch. Overcurrent Protection
  The SENSEP and SENSEN pins monitor the load current via the RDS(ON) of
  the external MOSFET, and serve as
  inputs to two internal comparators—
  SLOWCOMP and FASTCOMP—with
  trip points at VCB and VCB(FAST), respectively. The circuit breaker trips …

Модельный ряд

Классификация производителя

• Monitor, Control and Protection > Hot Swap Controllers > Low Voltage Hot Swap Controllers

Варианты написания:

LTC4213IDDBTRMPBF, LTC4213IDDB TRMPBF