MAX819LCSA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Monitor
• Characteristics: Low-power, high-accuracy, voltage monitoring
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the voltage level of a power supply and provides an output signal indicating whether the voltage is within the desired range.
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Accuracy: ±1%
• Threshold Voltage Options: 1.575V, 2.048V, 2.5V, 3.3V, 5V
• Output Type: Active low, open-drain
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The MAX819LCSA+T has the following pin configuration:

1. GND: Ground connection
2. VCC: Positive supply voltage input
3. TH: Threshold voltage selection pin
4. RESET: Output signal indicating power supply status
5. MR: Manual reset input
6. NC: No connection
7. NC: No connection
8. GND: Ground connection

Functional Features

• Monitors the voltage level of a power supply in real-time
• Provides a reset signal when the voltage falls below the threshold
• Selectable threshold voltage options for flexibility
• Low quiescent current for power efficiency
• Open-drain output allows for easy interfacing with other devices

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring
• Wide supply voltage range allows for versatile applications
• Low power consumption
• Compact and easy-to-use package

Disadvantages

• Limited threshold voltage options may not suit all applications
• No built-in hysteresis feature for noise immunity

Working Principles

The MAX819LCSA+T operates by continuously monitoring the input voltage level. It compares the voltage against the selected threshold voltage using an internal comparator. When the voltage falls below the threshold, the RESET pin is pulled low, indicating a power supply fault. The MR pin can be used to manually reset the device.

Detailed Application Field Plans

The MAX819LCSA+T finds applications in various fields, including:

1. Power supply units for computers and servers
2. Industrial control systems
3. Battery-powered devices
4. Consumer electronics
5. Automotive electronics

Detailed and Complete Alternative Models

1. MAX809: Similar power supply monitor IC with adjustable threshold voltage.
2. MAX823: Power supply monitor IC with integrated watchdog timer.
3. MAX638: Voltage monitor IC with additional features like power-on reset and manual reset.

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

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