MAX642AEPA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX642AEPA+ belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for voltage monitoring and power supply sequencing.

Characteristics

• Voltage monitoring and sequencing capabilities
• Low power consumption
• Wide operating temperature range
• High accuracy
• Small form factor

Package

The MAX642AEPA+ is available in a standard 8-pin plastic DIP package.

Essence

The essence of MAX642AEPA+ lies in its ability to monitor and control voltage levels, ensuring proper functioning of electronic devices.

Packaging/Quantity

This product is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 11V
• Operating Temperature Range: -40°C to +85°C
• Output Current: 20mA
• Quiescent Current: 10µA
• Threshold Accuracy: ±1.5%
• Power-On Reset Delay: 100ms

Detailed Pin Configuration

1. GND: Ground connection
2. IN: Input voltage pin
3. RESET: Active-low reset output
4. VCC: Positive supply voltage
5. MR: Manual reset input
6. TH: Threshold voltage setting pin
7. CT: Capacitor connection for reset delay
8. OUT: Output voltage pin

Functional Features

• Voltage Monitoring: The MAX642AEPA+ monitors the input voltage and provides a reset signal when it falls below a certain threshold.
• Power-On Reset: It generates a reset pulse during power-up to ensure a controlled start-up sequence.
• Manual Reset: The manual reset input allows for an external reset signal to override the internal monitoring circuit.
• Adjustable Threshold: The threshold voltage can be set using an external resistor, allowing flexibility in voltage monitoring.
• Low Power Consumption: The IC operates with low quiescent current, minimizing power consumption.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring
• Flexible threshold voltage adjustment
• Small form factor
• Wide operating temperature range

Disadvantages

• Limited output current capacity (20mA)
• Requires an external capacitor for reset delay

Working Principles

The MAX642AEPA+ works by comparing the input voltage (IN) with a reference voltage (TH). If the input voltage falls below the threshold voltage, the internal circuit generates a reset signal (RESET) to initiate a system reset. The reset signal remains active until the input voltage rises above the threshold voltage.

Detailed Application Field Plans

The MAX642AEPA+ finds applications in various electronic devices that require voltage monitoring and power supply sequencing. Some potential application fields include:

1. Embedded Systems: Used to ensure proper power-up sequencing and voltage monitoring in microcontroller-based systems.
2. Industrial Automation: Employed in control panels and PLCs to monitor power supply integrity and initiate system resets if necessary.
3. Automotive Electronics: Integrated into automotive modules to monitor battery voltage and trigger appropriate actions in case of voltage fluctuations.
4. Consumer Electronics: Utilized in devices such as smartphones, tablets, and gaming consoles to protect sensitive components from voltage variations.

Detailed and Complete Alternative Models

1. MAX641AEPA+: Similar to MAX642AEPA+, but with fixed threshold voltage.
2. MAX643AEPA+: Offers additional features like adjustable reset timeout and watchdog timer functionality.
3. MAX644AEPA+: Provides multiple voltage monitoring channels and individual reset outputs.

Note: This is not an exhaustive list, and there may be other alternative models available in the market.

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