Introducing the MAX4842EXT from Maxim Integrated

The MAX4842EXT is a high-performance, low-power, overvoltage protection controller, designed to safeguard low-voltage systems against voltage faults up to +28V. This compact and efficient device is a perfect solution for portable applications where space is at a premium and power efficiency is a must.

Key Features

• Overvoltage Protection: The MAX4842EXT provides robust protection for sensitive electronics. It quickly disconnects the load from the supply when the input voltage exceeds the overvoltage threshold, which is factory set at a precise voltage level to ensure reliable protection.
• Low Quiescent Current: With its ultra-low quiescent current, this device is ideal for battery-powered applications, ensuring minimal power drain when in standby mode.
• Fast Response Time: The device boasts a rapid response time, disconnecting the load in a matter of microseconds upon detecting an overvoltage condition. This quick action helps to prevent potential damage to the system.
• Small Form Factor: The MAX4842EXT comes in a tiny, 6-pin SC70 package, making it an excellent choice for space-constrained applications.

Applications

The MAX4842EXT is well-suited for a variety of applications, including:

• Portable electronics
• Cellular phones
• PDAs and handheld devices
• GPS units
• Notebook computers

Technical Specifications

The device operates over a wide range of input voltages and is designed to be compatible with multiple battery chemistries. It features an internal charge pump that controls an external n-channel MOSFET, disconnecting the load with minimal power dissipation. The MAX4842EXT also has thermal-shutdown protection, providing an additional layer of safety for the connected system.

Maxim Integrated's commitment to quality and reliability is evident in the MAX4842EXT, making it a trusted choice for designers looking to incorporate overvoltage protection into their next project. With its combination of features, the MAX4842EXT ensures that your electronics are shielded from unexpected power surges, maintaining both functionality and longevity.

For more detailed specifications and application notes, please refer to the official Maxim Integrated MAX4842EXT datasheet.