MAX691EPE+

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

MAX691EPE+ is a high-performance, low-power+ supervisor device from Maxim Integrated, designed for system voltage monitoring and system reset signaling. This article will discuss the application fields and working principle of the MAX691EPE+.

Application Fields

MAX691EPE+ has many applications in a variety of fields, such as telecommunications, automotive, consumer electronics, and industrial equipment. The primary uses are in low-power system monitoring, supply voltage monitoring, power-on reset (POR) generation, and system reset signaling.

If an important system supply is working incorrectly due to an unexpected circuit fault or user error, MAX691EPE+ will detect a voltage fault and then generate a power-on reset signaling or system reset signaling pulse. If a fault is detected, the resistor inside the MAX691EPE+ will short and activate the reset signal, thus resetting the system.

As telecommunications and automotive applications are required to adhere to strict safety standards, MAX691EPE+ provides extra security by providing a method to shut down a supply if it is not working correctly. Furthermore, MAX691EPE+ is designed for low power consumption and its power down function further reduces the power consumption.

Working Principle

The MAX691EPE+ works in two steps: detection and reset. First, the MAX691EPE+ detects the voltage fault or power-on reset using an internal comparator and reference detector. Then, it generates the reset signal using a capacitively-coupled Schmitt trigger circuit.

The MAX691EPE+ has two primary inputs, Vcc and Vee. The Vcc input supplies the main power master and the Vee input supplies the secondary power master. The voltage fault (or POR) is detected once the Vcc input drops below the pre-defined threshold, which is set by the on-chip voltage reference.

Once the voltage fault is detected, the voltage error will be compared against the reference voltage. If the voltage error is greater than the reference voltage, the MAX691EPE+ will generate a power-on reset signal or system reset signal. This signal will activate the reset circuitry, which will reset the system.

The MAX691EPE+ also has an integrated watchdog timer, which will monitor the system for any unexpected system faults. If a fault is detected, the watchdog timer will generate an alarm signal or system reset signal which will reset the system.

The MAX691EPE+ also comes with an integrated brown-out protection circuit to protect the system from unexpected power downtime. The brown-out protection circuit will detect if the system voltage drops below a pre-defined minimum voltage level and then generate an alarm signal or system reset signal to reset the system.

Overall, the MAX691EPE+ can provide low power system monitoring, power-on reset signaling, and system reset signaling, thus ensuring system safety and stability.

Conclusion

In conclusion, MAX691EPE+ is a high-performance, low-power+ supervisor device from Maxim Integrated that is designed for low power system monitoring, supply voltage monitoring, power-on reset (POR) generation, and system reset signaling. It is applicable in many fields such as telecommunications, automotive, consumer electronics, and industrial equipment. While it provides extra security by providing a safety shutdown feature in case of voltage faults, it also monitors the system to detect unexpected system faults and provides brown-out protection. Finally, MAX691EPE+ comes with a watchdog timer and integrated Schmitt trigger reset circuitry to provide further safety and stability.

The specific data is subject to PDF, and the above content is for reference