MAX809LEUR-T

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The MAX809LEUR-T is an Integrated Supervisory Circuit (ISC) belonging to the Power Management Integrated Circuit (PMIC) supervisor family, and is a cost-effective solution for reset and power monitoring functions. This device is ideal for monitoring battery-powered and other supply power applications, and also provides reset for brown-out, power-on reset, and watchdog timer reset. With its low quiescent current and high power supply voltage range, the MAX809LEUR-T is designed to be suitable for portable applications.

The MAX809LEUR-T has three primary application fields. The first is for battery-powered applications, where it performs two key functions: monitoring the supply voltage and generating a reset signal when it drops below a certain voltage level. By monitoring the supply voltage level, it can also be used to detect low battery and shut down the system in order to preserve battery life. By actively monitoring the supply voltage and generating a reset signal when it drops below a certain voltage, it can also help protect the system against under-voltage conditions.

The second application field is for brown-out reset, where the device will monitor the supply voltage and generate a reset signal when it drops below a certain voltage level which is set by a resistor-programmable resistor (RPR) network. This allows the reset signal to be generated at a specific voltage as opposed to a voltage threshold which can be set using a toggle switch. The device also has the capability to override this reset signal with an external logic signal.

The third application field is for power-on reset, where the device will generate a reset signal when the device power is applied or when the voltage transitions from an OFF state to an ON state. This reset signal can be used to initialize the system or restart after a power failure. Also, it can be used to reset microcontroller when using in combination with external logic.

The MAX809LEUR-T works by utilizing a combination of analog and digital circuits. The device contains an RPR circuit to program the reset voltage and an internal voltage regulator to provide a stable reference voltage. It also contains an edge detector to detect a voltage transition, as well as a watchdog timer to detect a system fault. These features, combined with a dual-channel reset output and a manually-programmable time base, make it an ideal choice for power management applications.

The MAX809LEUR-T is available in space-saving 8-pin SOIC package and is manufactured under the ISO/IEC 17025 Quality Assurance Program. It is guaranteed to operate from a single 2.7V to 5.5V supply, and is available in a temperature range from -40°C to +85°C. With its low cost and high performance, the MAX809LEUR-T makes it a superior choice for embedded power management applications.

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