Maxim Integrated MAX809SEUR

The Maxim Integrated MAX809SEUR is a microprocessor circuit intended for monitoring power supply voltage levels in digital systems. It provides a reset signal to the microcontroller or microprocessor whenever the supply voltage drops below a predetermined threshold. This ensures reliable and consistent operation of the device. Functions: 1. Voltage Monitoring: The MAX809SEUR monitors supply voltage and generates a reset signal when the voltage falls below a specified threshold. 2. Adjustable Reset Threshold: The reset threshold can be programmed using external resistor-divider networks, providing flexibility in setting the voltage level at which the reset signal is generated. 3. Precision Monitoring: The monitoring circuitry of the MAX809SEUR has a low voltage threshold accuracy, ensuring accurate monitoring of the supply voltage. Applications: 1. Microcontrollers and Microprocessors: The MAX809SEUR is commonly used in microcontroller and microprocessor-based systems to ensure reliable system operation by providing a reset signal during voltage dips or power supply disturbances. 2. Industrial Automation: It can be used in various industrial automation systems where the stable operation of digital control and monitoring circuits is critical. 3. Embedded Systems: The MAX809SEUR is well-suited for embedded systems such as IoT devices, wearables, and consumer electronics, where power supply fluctuations can affect the overall system performance. Alternative Parts: 1. TPS3840: Texas Instruments offers the TPS3840, which is a similar voltage supervisor IC with adjustable reset threshold and ultra-low power consumption. 2. MCP121: Microchip provides the MCP121, a voltage monitor and reset generator IC with adjustable threshold levels and a wide supply voltage range. 3. MAX708: Another alternative is the Maxim Integrated MAX708, which is a voltage monitor with a fixed reset threshold. Embedded Modules: 1. Microcontroller Boards: The MAX809SEUR can be integrated into various microcontroller development boards such as Arduino, Raspberry Pi, or ESP8266/ESP32 for voltage monitoring and system stability. 2. Power Management Modules: It can be used as an essential part of power management modules to ensure stable operation of power-sensitive applications. 3. Battery Management Systems: The MAX809SEUR can also be incorporated into battery management systems, continuously monitoring the voltage for optimal battery performance and protection. Q&A: 1. Can I change the reset threshold of the MAX809SEUR? Yes, the reset threshold of the MAX809SEUR can be adjusted by using external resistor-divider networks. This allows you to set the voltage level at which the reset signal is generated. 2. Is the MAX809SEUR suitable for automotive applications? No, the MAX809SEUR is not recommended for automotive applications as it is not specifically designed to meet automotive industry standards and requirements. 3. Does the MAX809SEUR have any power consumption specifications? The MAX809SEUR has a very low quiescent supply current, typically around 2μA, ensuring minimal power consumption in standby or idle modes. 4. Can I use the MAX809SEUR without connecting an external reset pull-up resistor? No, the MAX809SEUR requires an external reset pull-up resistor to function properly. The pull-up resistor ensures that the reset signal is at its intended logic high level when not actively driven low. 5. What is the operating voltage range of the MAX809SEUR? The MAX809SEUR has an operating voltage range from 1.2V to 5.5V, making it compatible with various power supply voltages commonly found in digital systems.