MAX6821WUK+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX6821WUK+ belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for voltage monitoring and reset functions in various electronic devices.

Characteristics

• Voltage monitoring: The MAX6821WUK+ can monitor the supply voltage and generate a reset signal when it falls below a certain threshold.
• Reset function: It provides a reliable reset signal to ensure proper operation of the connected device.
• Low power consumption: This IC operates with low power requirements, making it suitable for battery-powered applications.

Package

The MAX6821WUK+ is available in a small SOT23-5 package.

Essence

The essence of this product lies in its ability to provide voltage monitoring and reset functionality, ensuring the stable operation of electronic devices.

Packaging/Quantity

The MAX6821WUK+ is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 4.38V, and Adjustable
• Reset Timeout Period Options: 140ms, 560ms, 1.12s, and Adjustable
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6821WUK+ has the following pin configuration:

1. GND: Ground connection
2. MR: Manual reset input
3. RESET: Reset output
4. VCC: Positive supply voltage
5. TH: Threshold voltage selection pin

Functional Features

1. Voltage Monitoring: The MAX6821WUK+ continuously monitors the supply voltage and compares it with the selected threshold voltage.
2. Reset Generation: When the supply voltage falls below the threshold, the IC generates a reset signal on the RESET pin.
3. Manual Reset Input: The MR pin allows for manual resetting of the device, overriding the automatic reset function.
4. Adjustable Parameters: The IC provides options to adjust the threshold voltage and reset timeout period according to specific requirements.
5. Low Power Consumption: The MAX6821WUK+ operates with low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality
• Adjustable parameters for customization
• Low power consumption
• Small package size for space-constrained designs

Disadvantages

• Limited threshold voltage options compared to some alternative models
• Lack of built-in protection features for overvoltage or undervoltage conditions

Working Principles

The MAX6821WUK+ operates by continuously monitoring the supply voltage through its TH pin. When the voltage falls below the selected threshold, the IC generates a reset signal on the RESET pin. This reset signal ensures that the connected device restarts and operates properly. The IC also provides a manual reset input (MR) for manual control of the reset function.

Detailed Application Field Plans

The MAX6821WUK+ finds application in various electronic devices where voltage monitoring and reliable reset functionality are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper operation and recovery from power supply disturbances.
2. Embedded Systems: Providing reset functionality to maintain system stability.
3. Industrial Control Systems: Monitoring power supply integrity and initiating system resets when necessary.
4. Consumer Electronics: Preventing malfunctions due to voltage fluctuations and ensuring reliable operation.

Detailed and Complete Alternative Models

1. MAX6816: Offers additional overvoltage and undervoltage protection features.
2. MAX6820: Provides a wider range of threshold voltage options.
3. MAX6381: Includes a watchdog timer for enhanced system monitoring.

These alternative models offer similar functionality to the MAX6821WUK+ and can be considered based on specific application requirements.

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