MAX6426UK46+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision Monitoring, Adjustable Reset Threshold
• Package: SOT23-5
• Essence: Provides voltage monitoring and reset generation for microcontrollers and other digital systems.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 4.6V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6426UK46+T has a SOT23-5 package with the following pin configuration:

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Pin 1: GND (Ground) Pin 2: RESET (Reset Output) Pin 3: MR (Manual Reset Input) Pin 4: VCC (Supply Voltage) Pin 5: TH (Threshold Voltage)

Functional Features

• Precision Monitoring: The MAX6426UK46+T accurately monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Adjustable Reset Threshold: The threshold voltage can be set to 4.6V, providing flexibility in different applications.
• Low-Power Operation: With a quiescent current of only 3µA, the MAX6426UK46+T minimizes power consumption.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable operation of microcontrollers and digital systems. - Adjustable reset threshold allows customization for specific requirements. - Low-power operation prolongs battery life in portable devices.

Disadvantages: - Limited to a single threshold voltage option (4.6V). - SOT23-5 package may require additional space on the PCB compared to smaller packages.

Working Principles

The MAX6426UK46+T operates by continuously monitoring the supply voltage through the TH pin. When the voltage falls below the preset threshold of 4.6V, the RESET pin is asserted low, indicating a reset condition. The reset signal remains active until the supply voltage rises above the threshold and a timeout period of 140ms elapses.

Detailed Application Field Plans

The MAX6426UK46+T finds applications in various fields, including: 1. Battery-Powered Devices: Provides reliable voltage monitoring for battery-powered microcontroller-based systems, preventing erratic behavior due to low voltage. 2. Industrial Control Systems: Ensures proper operation of digital control systems by generating a reset signal when the supply voltage drops below the threshold. 3. Automotive Electronics: Monitors the vehicle's electrical system voltage, triggering a reset if it falls below the specified level, preventing malfunctions.

Detailed and Complete Alternative Models

1. MAX6427UK46+T: Similar to MAX6426UK46+T but with an adjustable reset threshold.
2. MAX6428UK46+T: Offers multiple threshold voltage options for greater flexibility.
3. MAX6429UK46+T: Provides additional features such as power-on reset delay and watchdog timer functionality.

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