MAX6423US47+T

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: Low-power, adjustable threshold voltage, small package size
• Package: SOT23-5
• Essence: Monitors the power supply voltage and generates 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
• Threshold Voltage Options: Adjustable from 0.4V to 4.625V in 25mV steps
• Reset Timeout Period: Fixed or adjustable using external capacitor
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 2µA (typical)

Detailed Pin Configuration

The MAX6423US47+T is a five-pin device with the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. TH: Threshold voltage selection input
5. VCC: Positive supply voltage input

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below the set threshold.
• Provides an active-low reset output that remains low until the supply voltage rises above the threshold.
• Offers an adjustable threshold voltage option for flexibility in different applications.
• Includes a manual reset input for immediate system reset.
• Low quiescent current consumption makes it suitable for battery-powered devices.

Advantages and Disadvantages

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

Disadvantages: - Fixed or adjustable reset timeout period may limit certain applications. - Limited pin configuration may restrict integration with complex systems.

Working Principles

The MAX6423US47+T operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the set threshold, the reset output is activated, indicating a power failure or low voltage condition. The reset output remains low until the supply voltage rises above the threshold, ensuring proper system operation. The device also includes a manual reset input that allows immediate system reset when triggered.

Detailed Application Field Plans

The MAX6423US47+T finds application in various fields, including:

1. Battery-Powered Devices: Provides voltage supervision to prevent damage due to low battery voltage and ensure safe operation.
2. Microcontroller Systems: Ensures reliable system startup by generating a reset signal during power-up until the supply voltage stabilizes.
3. Industrial Control Systems: Monitors power supply integrity to prevent data corruption or equipment malfunction in critical industrial environments.
4. Automotive Electronics: Protects sensitive electronic components from voltage fluctuations and ensures proper functioning of automotive systems.

Detailed and Complete Alternative Models

1. MAX6424US23+T: Similar to MAX6423US47+T but with a different package (SOT23-6) and fixed threshold voltage options.
2. MAX6425US29+T: Offers adjustable threshold voltage options like MAX6423US47+T but with a higher supply voltage range (up to 10V).
3. MAX6426US33+T: Suitable for applications requiring a fixed threshold voltage of 3.3V and a wider operating temperature range (-40°C to +125°C).

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