Maxim Integrated's MAX6495ATT Overvoltage Protection Controller

The MAX6495ATT from Maxim Integrated is a high-performance overvoltage protection device designed to safeguard low-voltage systems against voltage transients and surges. This compact, efficient controller is housed in a small 6-pin SOT23 package, making it an ideal solution for space-constrained applications requiring robust voltage protection.

With the capacity to handle an input voltage range from 6V to 72V, the MAX6495ATT is versatile and well-suited for a variety of industrial, automotive, and telecommunications applications. The device features an adjustable overvoltage protection threshold, allowing users to tailor the protection level to their specific needs. This customization is achieved through an external resistor divider, providing flexibility in design.

The MAX6495ATT includes an internal charge pump that drives an external n-channel MOSFET, which serves as the switch to disconnect the load during overvoltage conditions. This charge pump ensures that the MOSFET remains fully enhanced, providing a low on-resistance path during normal operation. In the event of an overvoltage condition, the controller quickly turns off the MOSFET, preventing damage to the protected components.

Another key feature of the MAX6495ATT is its overvoltage lockout (OVLO) function, which latches the device off if the input voltage exceeds the set threshold. The OVLO feature is critical in preventing the device from auto-resetting during prolonged overvoltage events, ensuring the system remains protected until the fault is cleared.

For added convenience, the MAX6495ATT includes an active-low fault indicator output. This open-drain output can be used to signal a microcontroller or other monitoring systems that an overvoltage condition has occurred, enabling swift system response to protect sensitive electronics.

In summary, the MAX6495ATT from Maxim Integrated is a highly reliable and customizable overvoltage protection controller. Its small footprint, adjustable protection threshold, and robust feature set make it an excellent choice for designers looking to incorporate overvoltage protection into their systems without compromising on space or performance.