MAX607EUA+T

MAX607EUA+T Application Field and Working Principle

The MAX607EUA+T is a low-cost microprocessor supervisory circuit (µP supervisor) optimized for personal digital assistant (PDA) and other mobile-system applications. This chip offers guaranteed detection of supply voltages as low as 1.5V with a supply current of 125uA. It is well suited for battery-powered systems requiring monitoring of the system\'s supply and reset outputs.

Features

• Proven cmos technology
• Very low supply current
• 200ms reset pulse width
• Watchdog timer
• Low voltage detect with push-pull/floating/open-drain output
• 3 selectable supply voltage ranges
• Integrated supply filter

Application

This MAX607EUA+T is used in a wide variety of applications such as personal digital assistants, digital cameras, modems, audio players, portable computers, and wireless communications. It is especially valuable in applications where the device is exposed to large voltage variations such as automotive and industrial environments, or in systems operating from rechargeable batteries.

Working Principle

The MAX607EUA+T monitors power voltage and is designed for use in a wide range of supply voltages (1.5V to 5.5V). It also includes a watchdog timer that can be used to reset the microprocessor in case of system fault conditions. Its low supply starts automatically. When the supply voltage drops below the reset threshold level, a reset signal is generated providing delayed reset protection.

The MAX607EUA+T also includes an integrated low voltage detect (LVD) circuit which can provide an output in the form of push-pull, open-drain, or floating logic outputs. This output can be used to initiate a power-down condition when the supply voltage drops below the LVD threshold voltage. The LVD circuit also includes a filter which allows for a smooth transition from power-on to power-down mode.

Conclusion

In summary, the MAX607EUA+T is an ideal microprocessor supervisor for a variety of mobile and embedded applications. It provides guaranteed detection of supply voltage levels as low as 1.5V and produces a reset output for a variety of conditions. In addition, it features a low voltage detect with push-pull/floating/open-drain outputs and an integrated supply filter to provide a smooth transition from power-on to power-down mode. The MAX607EUA+T is an excellent choice for battery-powered systems requiring monitoring of the system\'s supply and reset outputs.