MAX820REPE+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX820REPE+ belongs to the category of integrated circuits (ICs).

Use

This product is primarily used for voltage monitoring and reset functions in electronic devices.

Characteristics

• The MAX820REPE+ is a low-power, microprocessor supervisory circuit.
• It operates over a wide voltage range, making it suitable for various applications.
• This IC provides accurate monitoring of power supply voltages.
• It offers a reset output during power-up, power-down, and brownout conditions.

Package

The MAX820REPE+ is available in an 8-pin plastic DIP (Dual In-line Package) or SO (Small Outline) package.

Essence

The essence of this product lies in its ability to ensure reliable operation by monitoring and resetting the microprocessor when necessary.

Packaging/Quantity

The MAX820REPE+ is typically packaged in reels or tubes, with a quantity of 2500 units per reel or 50 units per tube.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, or adjustable
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The MAX820REPE+ has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. RESET#: Active-low reset output
4. MR#: Manual reset input
5. TH: Threshold adjust input
6. CT: Capacitor connection for reset timeout
7. GND: Ground reference
8. VCC: Power supply input

Functional Features

• Accurate voltage monitoring and reset generation
• Adjustable reset threshold voltage for flexibility
• Manual reset input for external control
• Capacitor connection for reset timeout customization
• Low quiescent current for power efficiency

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Accurate voltage monitoring ensures reliable operation.
• Adjustable reset threshold voltage provides flexibility in different applications.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited number of available reset threshold voltage options.
• Manual reset input may require additional external circuitry.

Working Principles

The MAX820REPE+ monitors the power supply voltage and generates a reset signal when the voltage falls below a specified threshold. It utilizes an internal voltage reference and comparator to accurately detect voltage levels. The reset output is activated during power-up, power-down, or brownout conditions, ensuring proper initialization and preventing erratic behavior of the microprocessor.

Detailed Application Field Plans

The MAX820REPE+ finds applications in various electronic devices where voltage monitoring and reset functions are critical. Some potential application fields include:

1. Microcontroller-based systems
2. Industrial automation equipment
3. Automotive electronics
4. Power management systems
5. Medical devices

Detailed and Complete Alternative Models

1. MAX821REUS+: Similar to MAX820REPE+, but available in a smaller SOT23 package.
2. MAX809REUR+: Offers similar functionality with adjustable reset threshold voltage and a push-pull reset output.
3. MAX811TEUS+: Provides manual reset input and adjustable reset threshold voltage in a SOT23 package.

These alternative models offer similar features and can be considered based on specific requirements and constraints.

In conclusion, the MAX820REPE+ is a versatile integrated circuit used for voltage monitoring and reset functions. Its wide operating range, accurate monitoring, and adjustable threshold voltage make it suitable for various applications. While it has some limitations, its functional features and advantages outweigh the disadvantages. The working principle ensures reliable operation, and it finds application in diverse fields. Additionally, alternative models provide flexibility for different design considerations.