MAX825SEXK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT23-5
• Essence: Ensures proper system operation by monitoring the power supply voltage
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, or Adjustable
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, or Adjustable
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX825SEXK+T has a total of five pins:

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

Functional Features

• Voltage Monitoring: The MAX825SEXK+T continuously monitors the power supply voltage and asserts the reset signal when it falls below the specified threshold.
• Reset Output: The active-low reset output remains asserted until the power supply voltage rises above the threshold for a specified timeout period.
• Manual Reset: The manual reset input (MR) allows an external signal to assert the reset output.
• Adjustable Parameters: The threshold voltage and timeout period can be adjusted using external resistors.
• Low Power Consumption: The IC operates with low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Adjustable parameters provide flexibility in different applications. - Low power consumption extends battery life.

Disadvantages: - Limited number of threshold voltage options. - Manual reset input may require additional circuitry for implementation.

Working Principles

The MAX825SEXK+T operates by comparing the power supply voltage with a reference voltage set by the threshold pin (TH). When the power supply voltage falls below the threshold, the reset output is asserted. The reset remains active until the power supply voltage rises above the threshold for the specified timeout period. The manual reset input (MR) allows an external signal to override the internal monitoring and assert the reset output.

Detailed Application Field Plans

The MAX825SEXK+T is commonly used in various applications where reliable voltage monitoring is critical. Some typical application fields include:

1. Microcontrollers: Ensuring proper operation by monitoring the supply voltage.
2. Embedded Systems: Protecting sensitive components from voltage fluctuations.
3. Industrial Control Systems: Preventing system malfunctions due to power supply issues.
4. Automotive Electronics: Monitoring the vehicle's electrical system for safe operation.
5. Battery-Powered Devices: Extending battery life by efficiently managing power supply.

Detailed and Complete Alternative Models

1. MAX823SEXK+T: Similar functionality but with a different package (SOT23-6).
2. MAX826SEXK+T: Lower quiescent current and wider supply voltage range.
3. MAX828SEXK+T: Adjustable threshold voltage and timeout period.
4. MAX829SEXK+T: Higher operating temperature range and lower supply voltage range.

(Note: This list is not exhaustive and other alternative models may exist.)

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