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MAX667 可調、+5V低壓差穩壓器

2008-11-27 15:55www.elecfans.co 本站我要評論（0）我要收藏

MAX667 可調、+5V低壓差穩壓器

MAX667 概述

The MAX667 low-dropout, positive, linear voltage regulator supplies up to 250mA of output current. With no load, it has a typical quiescent current of 20µA. At 200mA of output current, the input/output voltage differential is typically 150mV. Other features include a low-voltage detector to indicate power failure, as well as early-warning and low-dropout detectors to indicate an imminent loss of output voltage regulation. A shutdown control disables the output and puts the circuit into a low quiescent-current mode.

The MAX667 employs Dual Mode™ operation. One mode uses internally trimmed feedback resistors to produce +5V. In the other mode, the output may be varied from +1.3V to +16V by connecting two external resistors.

The MAX667 is a pin-compatible upgrade to the MAX666 in most applications where the input voltages are above +3.5V. Choose the MAX667 when high output currents and/or low dropout voltages are desired, as well as for improved performance at higher temperatures.

MAX667 PDF

MAX667 關鍵特性

  • 350mV Max Dropout at 200mA
  • 250mA Output Current
  • Normal Mode: 20µA Typ Quiescent Current
  • Shutdown Mode: 0.2µA Typ Quiescent Current
  • Low-Battery Detector
  • Fixed +5V (Min Component Count) or Adjustable Output
  • +3.5V to +16.5V Input
  • Dropout Detector Output
  • 10µF Output Capacitor

    MAX667 應用/使用

    汽車電子
     尋呼機及無線控制接收器
     便攜式儀表
     太陽能供電儀表

    MAX667應用電路

    MAX667：典型工作電路

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