MAX6821VUK+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX6821VUK+ 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 MAX6821VUK+ can monitor multiple voltage levels within a system, ensuring stable operation.
• Power sequencing: It enables controlled power-up and power-down sequences, preventing potential damage to sensitive components.
• Low power consumption: The IC operates with low power requirements, making it suitable for battery-powered devices.
• Wide operating temperature range: It can function reliably in a wide range of temperatures, enhancing its versatility.

Package

The MAX6821VUK+ is available in a compact SOT23-5 package.

Essence

The essence of this IC lies in its ability to provide accurate voltage monitoring and power sequencing capabilities, contributing to the overall stability and protection of electronic systems.

Packaging/Quantity

The MAX6821VUK+ is typically packaged in reels, containing 3,000 units per reel.

Specifications

• Supply voltage range: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Quiescent current: 10µA (typical)
• Output current: 20mA (maximum)

Detailed Pin Configuration

The MAX6821VUK+ features a 5-pin configuration:

1. GND: Ground connection
2. IN: Input voltage for monitoring
3. RESET#: Active-low reset output
4. MR#: Active-low manual reset input
5. VCC: Power supply voltage input

Functional Features

1. Voltage Monitoring: The MAX6821VUK+ continuously monitors the input voltage (IN) and compares it to predefined thresholds. It generates a reset signal (RESET#) when the voltage falls below the specified threshold, indicating a power failure or abnormal condition.

2. Power Sequencing: This IC allows controlled power-up and power-down sequences by utilizing the MR# pin. It ensures that specific components are powered in the correct order, preventing potential damage due to improper power sequencing.

3. Manual Reset: The MR# pin provides the option for manual reset, allowing users to initiate a system reset manually.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring enhances system stability.
• Controlled power sequencing protects sensitive components.
• Low power consumption prolongs battery life.
• Wide operating temperature range ensures reliability in various environments.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• SOT23-5 package may require additional space compared to smaller packages.

Working Principles

The MAX6821VUK+ operates based on a voltage comparator circuit. It compares the input voltage (IN) with internally set thresholds. When the voltage drops below a certain threshold, it triggers the reset signal (RESET#), indicating a power failure or abnormal condition. The power sequencing feature is achieved through the MR# pin, which controls the timing of power-up and power-down sequences.

Detailed Application Field Plans

The MAX6821VUK+ finds application in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable gaming consoles - Industrial control systems - Automotive electronics

In these applications, the IC ensures proper voltage monitoring and power sequencing, safeguarding the integrity and functionality of the devices.

Detailed and Complete Alternative Models

Some alternative models to the MAX6821VUK+ include: - MAX6822VUK+ - MAX6823VUK+ - MAX6824VUK+

These models offer similar voltage monitoring and power sequencing capabilities, with slight variations in specifications and pin configurations. Users can choose the most suitable alternative based on their specific requirements.

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