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

Power management integrated circuit (PMIC) is an important type of integrated circuit (IC) in electrical engineering. It is used to control and manage the power supply, such as the power switch, voltage converter, voltage regulator and battery charging. Among them, the supervisor IC is the core part of PMIC. Supervisors are electronic components which are used to monitor the system power and provide reset feature, that is, when a fault occurs in the system and the system has no output, a reset signal is output to reset the system.

MAX809RTR Application Field and Working Principle

The MAX809RTR is a low-cost, low-power reset supervisor IC developed by Maxim Integrated. It has overvoltage protection, overcurrent protection, battery monitoring, retry function and clock queue function. The housing packages of this IC are SOT-23-5, SC-70-5, SOIC-8, TDFN-8 and WDFN-10. It can provide reset timing from 10 ms to 500 ms and reset time from 5 ms to 250 ms. Its maximum operating voltage is 15V, and its operating temperature range is from -40°C to +125°C.

Application Field of MAX809RTR

The MAX809RTR is widely applicable in low-power systems. It is suitable for use in computers, optical storage equipment, portable medical equipment, audio amplifiers and other battery-powered applications. It is often used with microprocessors (MCUs) to provide reset protection and reset timing reservation.

Working principle of MAX809RTR

The MAX809RTR detects the voltage of the power supply system and compares it with the activation voltage (VPOR) in the IC. If the voltage is lower than the activation voltage, the RESET output will be triggered. The RESET output will be held low as long as the voltage is lower than the activation voltage. When the voltage returns to a normal level, the RESET output is released and the system is reset through the reset node.

The MAX809RTR also has an overvoltage protection function that can detect if the power supply voltage exceeds a preset voltage. This can protect against overvoltage and provide a failsafe for the system. In addition, the MAX809RTR also has an overcurrent protection function. When the current of the power supply exceeds a preset value, the overcurrent protection circuit in the IC will turn off the power supply circuit and protect the device from high current damage.

In addition, due to its low operating power, the MAX809RTR can monitor the voltage to detect the remaining charge of the battery. When the battery voltage is lower than the preset comparator level, the MAX809RTR will output a warning signal to remind the user to charge the battery.

Conclusion

The MAX809RTR is a low-cost, low-power reset supervisor IC developed by Maxim Integrated. It is suitable for a variety of low power applications, especially those with a need for reset protection and reset timing. It has overvoltage protection, overcurrent protection, battery monitoring, retry function and clock queue function. The MAX809RTR can provide reset timing from 10 ms to 500 ms and reset time from 5 ms to 250 ms, making it a reliable and cost-effective solution for low power systems.

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