MAX818LCPA+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX818LCPA+ belongs to the category of integrated circuits (ICs) and specifically falls under the family of voltage supervisors.

Use

This product is primarily used for monitoring and supervising voltage levels in electronic systems. It ensures that the voltage remains within specified limits, providing reliable operation and preventing damage to sensitive components.

Characteristics

• Voltage supervision range: The MAX818LCPA+ can monitor voltages from 1.8V to 5.0V.
• Low power consumption: This IC consumes minimal power during operation, making it suitable for battery-powered applications.
• Adjustable reset threshold: The reset threshold voltage can be adjusted using external resistors.
• Precision monitoring: The MAX818LCPA+ offers accurate voltage monitoring with a low voltage threshold deviation.

Package

The MAX818LCPA+ is available in an 8-pin plastic small outline package (SOIC). This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the MAX818LCPA+ lies in its ability to ensure stable voltage levels, preventing system failures and protecting electronic components.

Packaging/Quantity

This product is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Options: Adjustable or Fixed
• Reset Timeout Period: Selectable options ranging from 1ms to 640ms
• Quiescent Current: Typically 7µA

Detailed Pin Configuration

The MAX818LCPA+ features eight pins, each serving a specific function:

1. VCC: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin that indicates the system reset status.
4. MR: Master Reset input pin for manual reset control.
5. GND: Ground reference pin.
6. RESET: Output pin that indicates the system reset status.
7. VCC: Power supply input pin.
8. NC: No connection pin.

Functional Features

• Voltage Monitoring: The MAX818LCPA+ continuously monitors the voltage level and generates a reset signal if it falls below the specified threshold.
• Manual Reset: The MR pin allows for manual reset control, enabling system initialization or recovery.
• Adjustable Threshold: By using external resistors, the reset threshold voltage can be adjusted to suit specific application requirements.
• Reset Timeout: The IC provides a selectable reset timeout period, allowing flexibility in defining the duration of the reset signal.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various systems.
• Low power consumption prolongs battery life in portable devices.
• Accurate voltage monitoring ensures system reliability.
• Adjustable reset threshold offers customization options.
• Selectable reset timeout period enhances flexibility.

Disadvantages

• Limited number of pins may restrict the integration of additional features.
• Requires external resistors for adjusting the reset threshold.

Working Principles

The MAX818LCPA+ operates by comparing the monitored voltage with a preset threshold. If the voltage drops below this threshold, the IC triggers a reset signal, indicating a fault condition. The reset signal remains active until the voltage rises above the threshold or a specified timeout period elapses.

Detailed Application Field Plans

The MAX818LCPA+ finds applications in various fields, including but not limited to: - Battery-powered devices: Ensures safe operation and prevents damage due to low voltage conditions. - Industrial automation: Monitors voltage levels in control systems, preventing malfunctions and ensuring reliable operation. - Automotive electronics: Protects sensitive components from voltage fluctuations, enhancing the overall performance and longevity of the system.

Detailed and Complete Alternative Models

Some alternative models to the MAX818LCPA+ include: - MAX809: Similar voltage supervisor IC with fixed reset threshold options. - MAX811: Voltage supervisor IC with manual reset input and adjustable reset threshold. - MAX823: Voltage supervisor IC with additional power-on reset delay feature.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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