MAX825ZEXK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT23-5
• Essence: Monitors the power supply voltage and generates a reset signal when the voltage falls below a predetermined threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Reset Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 3.6V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX825ZEXK+T has a total of five pins arranged as follows:

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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: RESET (Reset Output)

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage falls below the preset threshold.
• Provides manual reset capability through the MR pin.
• Low quiescent current makes it suitable for battery-powered applications.
• Wide operating temperature range allows usage in various environments.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Low-power consumption extends battery life. - Small package size enables space-saving designs. - Manual reset input provides flexibility in system control.

Disadvantages: - Limited reset threshold voltage and timeout period options. - Not suitable for high-voltage applications.

Working Principles

The MAX825ZEXK+T operates by continuously monitoring the supply voltage. When the voltage drops below the preset threshold, it triggers the internal circuitry to generate a reset signal. This signal can be used to reset the microcontroller or other system components, ensuring proper operation during power fluctuations or brownout conditions. The manual reset input (MR) allows the user to manually initiate a reset if required.

Detailed Application Field Plans

The MAX825ZEXK+T is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some typical application fields include:

1. Microcontroller-based Systems: Provides voltage supervision and reset capability for microcontrollers, ensuring stable operation and preventing data corruption during power disturbances.
2. Industrial Control Systems: Monitors power supply voltages in industrial control equipment, enabling safe shutdown or recovery procedures in case of voltage fluctuations.
3. Battery-Powered Devices: Protects battery-powered devices from undervoltage conditions, preventing damage to sensitive components and ensuring proper system operation.
4. Automotive Electronics: Ensures reliable operation of automotive electronics by monitoring the vehicle's power supply and initiating resets when necessary.
5. Home Automation Systems: Integrates voltage monitoring and reset functionality into home automation systems, enhancing overall system reliability.

Detailed and Complete Alternative Models

1. MAX823ZEXK+T: Similar to MAX825ZEXK+T but with different reset threshold voltage options.
2. MAX826ZEXK+T: Voltage supervisor IC with additional features such as adjustable reset timeout period.
3. MAX809ZEXK+T: Low-power microprocessor reset circuits with different package options.
4. MAX638ZEXK+T: Voltage monitors with integrated watchdog timer for enhanced system reliability.
5. MAX6719ZEXK+T: Voltage supervisors with adjustable reset threshold and manual reset input.

These alternative models offer similar functionality to the MAX825ZEXK+T but may have different specifications or additional features to suit specific application requirements.

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