MAX844ISA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX844ISA+ 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
• Compact size and low power consumption
• High accuracy and reliability
• Wide operating temperature range

Package

MAX844ISA+ is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of MAX844ISA+ lies in its ability to monitor and control voltage levels, ensuring proper power supply sequencing in electronic systems.

Packaging/Quantity

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

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Output Current: 20mA
• Quiescent Current: 25µA (typical)
• Threshold Accuracy: ±1.5%
• Power-On Reset Timeout: 100ms (typical)

Detailed Pin Configuration

1. GND: Ground connection
2. IN: Input voltage monitoring pin
3. RESET: Active-low reset output
4. VCC: Positive power supply
5. OUT: Open-drain output for power sequencing

Functional Features

• Voltage Monitoring: MAX844ISA+ monitors the input voltage and generates a reset signal when it falls below a certain threshold.
• Power Sequencing: It ensures proper power supply sequencing by controlling the timing of the reset signal.
• Open-Drain Output: The open-drain output allows for easy integration with other components in the system.
• Low Power Consumption: The IC consumes minimal power during operation, contributing to energy efficiency.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring and power sequencing capabilities
• Compact size allows for easy integration into various electronic devices
• Wide operating temperature range ensures reliability in different environments

Disadvantages

• Limited output current may not be suitable for high-power applications
• Requires external components for proper functionality

Working Principles

MAX844ISA+ operates by continuously monitoring the input voltage. When the voltage falls below a predetermined threshold, it generates a reset signal to initiate a power-on reset sequence. This ensures that the system starts up in a controlled manner, preventing any potential issues caused by improper power supply sequencing.

Detailed Application Field Plans

• Power Supply Units (PSUs): MAX844ISA+ can be used in PSUs to monitor and control the voltage levels, ensuring stable and reliable power delivery.
• Embedded Systems: It finds application in embedded systems where proper power sequencing is crucial for the correct operation of various components.
• Industrial Automation: The IC can be utilized in industrial automation systems to monitor and control voltage levels in critical equipment.

Detailed and Complete Alternative Models

1. MAX845ISA+: Similar to MAX844ISA+, but with additional features such as adjustable threshold voltage and higher output current.
2. MAX846ISA+: A variant with extended temperature range and enhanced ESD protection.
3. MAX847ISA+: Offers multiple voltage monitoring channels and programmable delay timers.

These alternative models provide similar functionalities to MAX844ISA+ while offering additional features tailored to specific requirements.

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