MAX6821TUK+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX6821TUK+ belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for voltage monitoring and power sequencing applications.

Characteristics

• Voltage monitoring: The MAX6821TUK+ can monitor multiple voltage levels within a system.
• Power sequencing: It enables controlled power-up and power-down sequences, ensuring proper operation of electronic devices.
• Package: The IC comes in a small SOT23-5 package, which is suitable for space-constrained applications.
• Essence: The MAX6821TUK+ provides reliable and accurate voltage monitoring and power sequencing capabilities.
• Packaging/Quantity: It is typically available in reels or tubes, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Output Current: 20mA
• Quiescent Current: 10µA (typical)
• Threshold Accuracy: ±1.5%
• Power-On Reset Timeout: 140ms (typical)

Pin Configuration

The MAX6821TUK+ has a total of five pins, as follows:

1. GND: Ground pin
2. RESET#: Active-low reset output pin
3. MR#: Active-low manual reset input pin
4. VCC: Positive supply voltage pin
5. TH: Threshold input pin

Functional Features

1. Voltage Monitoring: The MAX6821TUK+ can monitor up to four different voltage levels simultaneously.
2. Power Sequencing: It allows controlled power-up and power-down sequences, preventing potential damage to sensitive components.
3. Power-On Reset: The IC generates a reset signal upon power-up, ensuring a reliable system startup.
4. Manual Reset: The MAX6821TUK+ provides a manual reset input for immediate system reset when required.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring for multiple levels
• Controlled power sequencing for safe operation
• Small package size suitable for space-constrained applications
• Low quiescent current for power efficiency

Disadvantages

• Limited to voltage monitoring and power sequencing applications
• Requires external components for complete functionality

Working Principles

The MAX6821TUK+ operates by comparing the voltages applied to its threshold (TH) pin with internal reference voltages. It generates appropriate output signals based on these comparisons, indicating the status of the monitored voltages. The IC also incorporates power sequencing logic to ensure proper power-up and power-down sequences.

Application Field Plans

The MAX6821TUK+ finds extensive use in various electronic devices and systems, including: - Power supply units - Battery management systems - Industrial control systems - Embedded systems - Consumer electronics

Alternative Models

For voltage monitoring and power sequencing applications, alternative models to consider include: - MAX6822TUK+ - MAX6823TUK+ - MAX6824TUK+

These models offer similar functionality but may have different specifications or additional features.

In conclusion, the MAX6821TUK+ is a versatile integrated circuit that provides accurate voltage monitoring and power sequencing capabilities. Its small package size and low quiescent current make it suitable for a wide range of electronic applications. However, it is important to consider alternative models based on specific requirements.