MAX6422XS31+T

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: Surface Mount
• Essence: Ensures reliable system operation by monitoring power supply voltages
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 3.08V, 3.13V, 3.30V, 3.63V, 4.38V, 4.63V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)
• Output Type: Active-Low, Open-Drain
• Reset Timeout Period: 140ms (typical)

Detailed Pin Configuration

The MAX6422XS31+T has a total of six pins:

1. GND: Ground connection.
2. RESET: Active-low reset output.
3. MR: Manual reset input.
4. VCC: Positive supply voltage.
5. TH: Threshold voltage selection pin.
6. NC: No connect.

Functional Features

• Precision Voltage Monitoring: The MAX6422XS31+T accurately monitors the power supply voltage and provides a reset signal when it falls below a specified threshold.
• Low-Power Operation: With a quiescent current of only 1µA, this voltage supervisor minimizes power consumption in battery-powered applications.
• Reset Timeout Period: The device ensures that the reset signal remains active for a minimum period of 140ms after the power supply voltage rises above the threshold, preventing premature system restarts.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring enhances system reliability. - Low quiescent current minimizes power consumption. - Reset timeout period prevents premature system restarts.

Disadvantages: - Limited threshold voltage options may not suit all applications. - No connect (NC) pin reduces flexibility in pin configuration.

Working Principles

The MAX6422XS31+T operates by comparing the power supply voltage with a user-selectable threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a fault condition. The reset signal remains active for a minimum period of 140ms after the supply voltage rises above the threshold, ensuring stable system operation.

Detailed Application Field Plans

The MAX6422XS31+T finds applications in various fields, including:

1. Industrial Control Systems: Provides reliable voltage monitoring in control systems to prevent malfunctions and ensure safe operation.
2. Automotive Electronics: Monitors power supply voltages in automotive applications, enhancing overall system reliability.
3. Consumer Electronics: Ensures stable operation of electronic devices by detecting and responding to voltage fluctuations.
4. Medical Equipment: Voltage supervision in medical devices guarantees patient safety and uninterrupted operation.

Detailed and Complete Alternative Models

1. MAX6422US26+T: Similar voltage supervisor with a different threshold voltage range (2.63V to 5.5V).
2. MAX6422XS29+T: Voltage supervisor with a narrower threshold voltage range (2.88V to 3.13V).
3. MAX6422US30+T: Alternative model with a higher threshold voltage range (2.93V to 5.5V).

These alternative models offer similar functionality but cater to different voltage requirements.

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