Datasheet Linear Technology LT1976BIFE#PBF — 数据表

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LT1976B

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  60V Step-Down DC/DC Converter Has Only 100ВµA Quiescent Current &mdash DN1007
  PDF, 61 Kb, 档案已发布: Mar 8, 2005
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  advertisement 60V Step-Down DC/DC Converter Has Only
  100µA Quiescent Current – Design Note 1007
  Keith Szolusha
  Introduction
  High voltage bipolar monolithic step-down converters are
  usually optimized for high efficiency at high output currents. But the consumption of over 1mA quiescent current
  at zero load can be undesirable in battery-powered applications which operate with long periods of light load current. Although a shutdown function may reduce the
  quiescent current in order to save battery life, it also drops
  the output voltage to zero. In systems where a regulated
  output voltage is always needed for light load applications
  such as system diagnostics (and ready-to-use load transients), a solution with high efficiency at light load is needed.
  The LTВ®1976 is designed to optimize efficiency over all
  current levels, both high and low, with an extremely wide
  input voltage range. Micropower bias current and Burst
  ModeВ® operation enable it to consume a mere 100ВµA at
  zero load and 12V input. The high efficiency bipolar NPN
  power switch (0.2Ω) provides up to 90% efficiency at load
  current up to 1.25A.
  The LT1976 is a 1.5A monolithic buck switching regulator. Its 3.3V to 60V input voltage range makes the LT1976 VIN
  4V TO 60V 4.7ВµF
  100V
  CER VIN ideal for 14V and 42V (future) automotive applications
  which must meet both sub-4V cold crank and high input …

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制造商分类

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | Micropower Buck Regulators | Internal Power Switch Buck
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

其他名称:

LT1976BIFEPBF, LT1976BIFE PBF