MAX6725KASYD3+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitoring and Resetting
• Characteristics: Low-power, Precision Voltage Monitoring, Programmable Delay Time
• Package: SOT23-6
• Essence: Supervisory Circuit with Watchdog Timer
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V, 4.63V
• Adjustable Reset Timeout Period: 1.6ms to 640ms
• Watchdog Timer Timeout Period: 1.6ms, 40ms, 160ms, 640ms

Detailed Pin Configuration

1. GND: Ground
2. RESET: Active-Low Reset Output
3. MR: Manual Reset Input
4. VCC: Supply Voltage
5. WDI: Watchdog Timer Input
6. NC: No Connection

Functional Features

• Voltage Monitoring: Monitors the supply voltage and asserts a reset signal when it falls below the programmed threshold.
• Watchdog Timer: Provides a mechanism to detect and recover from system malfunctions by resetting the microcontroller if it fails to toggle the watchdog input within the specified timeout period.
• Manual Reset: Allows for an external reset signal to be applied, overriding the internal monitoring circuitry.
• Programmable Delay Time: The reset timeout period can be adjusted using an external capacitor.

Advantages

• Low-power consumption makes it suitable for battery-powered applications.
• Wide supply voltage range allows for compatibility with various systems.
• Small package size enables space-efficient designs.
• Precision voltage monitoring ensures reliable operation.

Disadvantages

• Limited number of reset threshold voltage options.
• Watchdog timer timeout periods may not be suitable for all applications.
• Manual reset input may require additional external components.

Working Principles

The MAX6725KASYD3+T is a supervisory circuit that continuously monitors the supply voltage and provides a reset signal to the microcontroller when it falls below the programmed threshold. It also includes a watchdog timer that detects system malfunctions by monitoring a specific input signal from the microcontroller. If the watchdog input is not toggled within the specified timeout period, the MAX6725KASYD3+T asserts a reset signal to restart the microcontroller.

The reset timeout period can be adjusted using an external capacitor connected to the CT pin. This allows for customization based on the specific requirements of the application.

Detailed Application Field Plans

The MAX6725KASYD3+T is commonly used in various electronic systems where reliable voltage monitoring and resetting are crucial. Some typical application fields include: 1. Microcontroller-based Systems: Provides a safeguard against power supply fluctuations and ensures proper initialization of the microcontroller. 2. Industrial Control Systems: Monitors critical voltages in industrial equipment to prevent damage or data corruption during power disturbances. 3. Automotive Electronics: Ensures stable operation of automotive control units by monitoring the vehicle's power supply. 4. Medical Devices: Protects sensitive medical equipment from voltage variations and guarantees safe operation. 5. Consumer Electronics: Used in devices such as smart home appliances, gaming consoles, and audio/video equipment to maintain system integrity.

Detailed and Complete Alternative Models

1. MAX6710: Voltage Monitoring with Adjustable Reset Timeout Period
2. MAX6381: Voltage Monitoring with Dual Reset Outputs
3. MAX6746: Voltage Monitoring with Programmable Reset Thresholds
4. MAX6316: Voltage Monitoring with Watchdog Timer and Manual Reset
5. MAX6753: Voltage Monitoring with Adjustable Reset Threshold and Timeout

These alternative models offer similar functionality to the MAX6725KASYD3+T but may have different specifications, package options, or additional features.

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