MAX802RCSA+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX802RCSA+ belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• The MAX802RCSA+ is a low-power, microprocessor supervisory circuit.
• It operates at a supply voltage range of 1.0V to 5.5V.
• This IC provides a reset output when the power supply voltage drops below a predetermined threshold.
• It offers a manual reset input for immediate system reset.
• The MAX802RCSA+ has a small form factor, making it suitable for space-constrained applications.

Package and Quantity

The MAX802RCSA+ is available in a small SOT23-3 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.2V to 4.63V
• Reset Timeout Period: Fixed at 140ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX802RCSA+ features a simple three-pin configuration:

1. VCC: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin that goes low when the supply voltage falls below the reset threshold.

Functional Features

• Voltage Monitoring: The MAX802RCSA+ continuously monitors the supply voltage and generates a reset signal if it drops below the set threshold.
• Manual Reset Input: A manual reset input allows for an immediate system reset, overriding the voltage monitoring function.
• Low Power Consumption: This IC consumes minimal power, making it suitable for battery-powered applications.
• Small Form Factor: The SOT23-3 package ensures a compact footprint, enabling usage in space-constrained designs.

Advantages and Disadvantages

Advantages

• Accurate Voltage Monitoring: The MAX802RCSA+ provides precise voltage monitoring, ensuring reliable system operation.
• Adjustable Reset Threshold: The reset threshold voltage can be easily adjusted to suit specific application requirements.
• Low Power Consumption: This IC minimizes power consumption, prolonging battery life in portable devices.

Disadvantages

• Fixed Reset Timeout Period: The reset timeout period of 140ms may not be suitable for all applications requiring longer or shorter timeouts.
• Limited Package Options: The MAX802RCSA+ is only available in the SOT23-3 package, which may limit its compatibility with certain designs.

Working Principles

The MAX802RCSA+ operates by comparing the supply voltage with a preset threshold. When the voltage drops below this threshold, the reset output is activated, indicating a power failure. The manual reset input allows for an immediate system reset, overriding the voltage monitoring function.

Detailed Application Field Plans

The MAX802RCSA+ finds applications in various fields, including:

1. Consumer Electronics: Used in smartphones, tablets, and wearable devices to ensure proper system reset during power fluctuations.
2. Industrial Automation: Employed in control systems and PLCs to monitor power supply integrity and initiate system resets if necessary.
3. Automotive Electronics: Integrated into automotive modules to provide reliable voltage monitoring and reset functions.
4. Medical Devices: Utilized in medical equipment to ensure safe operation by monitoring power supply stability.

Detailed and Complete Alternative Models

1. MAX803RCSA+: Similar to the MAX802RCSA+, but with an adjustable reset timeout period.
2. MAX809RCSA+: Provides a push-pull active-low reset output instead of the open-drain output of the MAX802RCSA+.
3. MAX811RCSA+: Offers a manual reset input with a guaranteed minimum pulse width, ensuring reliable system resets.

In conclusion, the MAX802RCSA+ is a versatile microprocessor supervisory IC that provides accurate voltage monitoring and reset functions. Its small form factor, low power consumption, and adjustable threshold make it suitable for various applications in consumer electronics, industrial automation, automotive electronics, and medical devices.

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