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MAX6397 - Overvoltage Protection Switch/Limiter Controllers

General Description

The MAX6397/MAX6398 are small, high-voltage overvoltage protection circuits.

These devices disconnect the output load or limit the output voltage during an input overvoltage condition.

Key Features

  • 5.5V to 72V Wide Supply Voltage Range.
  • Overvoltage Protection Controllers Allow User to Size External n-Channel MOSFETs.
  • Internal Charge-Pump Circuit Ensures MOSFET Gate-to-Source Enhancement for Low RDS(ON) Performance.
  • Disconnect or Limit Output from Input During Overvoltage Conditions.
  • Adjustable Overvoltage Threshold.
  • Thermal-Shutdown Protection.
  • Always-On, Low-Current (37µA) Linear Regulator Sources Up to 100mA (MAX6397).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 19-3668; Rev 3; 1/07 Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V General Description The MAX6397/MAX6398 are small, high-voltage overvoltage protection circuits. These devices disconnect the output load or limit the output voltage during an input overvoltage condition. These devices are ideal for applications that must survive high-voltage transients such as those found in automotive and industrial applications. The MAX6397/MAX6398 monitor the input or output voltages and control an external n-channel MOSFET to isolate or limit the load from overvoltage transient energy. When the monitored input voltage is below the useradjustable overvoltage threshold, the external n-channel MOSFET is turned on by the GATE output.