MAX6423XS28+T

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: Surface Mount, 5-Pin SC70
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.8V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6423XS28+T has the following pin configuration:

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

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Provides an adjustable timeout period for the reset signal.
• Allows manual reset through the MR pin.
• Low quiescent current consumption for power-sensitive applications.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Adjustable threshold voltage provides flexibility in monitoring different voltage levels. - Low quiescent current minimizes power consumption. - Small package size enables space-saving designs.

Disadvantages: - Limited reset timeout period range may not suit all application requirements. - Lack of additional features such as hysteresis adjustment.

Working Principles

The MAX6423XS28+T operates by continuously monitoring the supply voltage connected to the VCC pin. When the voltage falls below the threshold voltage set by the TH pin, the RESET pin is driven low, indicating a reset condition. The timeout period determines how long the reset signal remains active after the voltage rises above the threshold.

The MR pin allows for manual reset, overriding the automatic reset function. By pulling the MR pin low, the user can force the reset output to go low, regardless of the supply voltage level.

Detailed Application Field Plans

The MAX6423XS28+T finds applications in various fields where reliable voltage monitoring and reset functionality are required. Some potential application areas include:

1. Microcontroller Systems: Ensuring proper system initialization and preventing erratic behavior during power-up or brownout conditions.
2. Battery-Powered Devices: Protecting sensitive circuitry from undervoltage conditions that could lead to data loss or malfunction.
3. Industrial Control Systems: Providing fault detection and recovery capabilities in critical control systems.
4. Automotive Electronics: Monitoring automotive power supplies to prevent damage to electronic components during voltage fluctuations.

Detailed and Complete Alternative Models

1. MAX6423XS28+T+: Similar to MAX6423XS28+T, but with an extended temperature range (-40°C to +125°C).
2. MAX6423XS28+T/V+: Variant with adjustable reset timeout period through external capacitor selection.
3. MAX6423XS28+T/R+: Enhanced version with additional hysteresis adjustment for improved noise immunity.

These alternative models offer similar functionality with slight variations to cater to specific application requirements.

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