MAX809SQ400T1G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, reset output, precision voltage reference
• Package: SOT-23-3
• Essence: Monolithic microprocessor supervisory circuit
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage: 4.00V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809SQ400T1G has three pins:

1. GND: Ground pin
2. RESET: Reset output pin
3. VCC: Supply voltage input pin

Functional Features

• Monitors the supply voltage and asserts a reset signal when the voltage drops below the reset threshold.
• Provides a precision voltage reference for accurate monitoring.
• Low quiescent current makes it suitable for battery-powered applications.
• Reset timeout period ensures proper system reset.

Advantages and Disadvantages

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

Disadvantages: - Fixed reset threshold voltage may not be suitable for all applications. - Limited reset timeout period may not be sufficient for certain system requirements.

Working Principles

The MAX809SQ400T1G operates by continuously monitoring the supply voltage. When the voltage drops below the reset threshold of 4.00V, the reset output is asserted, indicating a low-voltage condition. The reset signal remains active until the voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX809SQ400T1G is commonly used in various applications, including:

1. Microcontrollers: Ensures proper system initialization and prevents erratic behavior during power-up.
2. Embedded Systems: Provides reliable voltage monitoring for stable operation.
3. Battery-Powered Devices: Maximizes battery life by minimizing power consumption during standby or low-power modes.
4. Industrial Control Systems: Enhances system reliability by detecting and resetting in case of voltage fluctuations.

Detailed and Complete Alternative Models

Some alternative models to the MAX809SQ400T1G include:

1. MAX809SQ438T1G: Similar features with a higher reset threshold voltage of 4.38V.
2. MAX809SQ450T1G: Similar features with a higher reset threshold voltage of 4.50V.
3. MAX809SQ460T1G: Similar features with a higher reset threshold voltage of 4.60V.
4. MAX809SQ480T1G: Similar features with a higher reset threshold voltage of 4.80V.

These alternative models provide flexibility in choosing the appropriate reset threshold voltage for specific application requirements.

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