MAX809SQ232T1G

Product Overview

• Category: Integrated Circuit
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Low-power consumption
  • Precision voltage monitoring
  • Wide operating voltage range
  • Small package size
• Package: SOT-23
• Essence: Provides accurate voltage monitoring and reset functionality for various electronic systems.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.32V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Reset Timeout Period: 140ms (typical)

Detailed Pin Configuration

The MAX809SQ232T1G has three pins:

1. VCC: Connects to the positive supply voltage.
2. GND: Connects to the ground reference.
3. RESET: Output pin that provides a reset signal when the monitored voltage drops below the threshold.

Functional Features

• Accurate Voltage Monitoring: The MAX809SQ232T1G ensures precise monitoring of the supply voltage, preventing system malfunctions due to undervoltage conditions.
• Reset Functionality: When the monitored voltage falls below the threshold, the device asserts the RESET pin, allowing the system to perform a controlled reset.
• Power-On Reset: The device generates a reset pulse during power-up, ensuring proper initialization of the system.
• Manual Reset Input: An external push-button can be connected to the RESET pin to manually trigger a system reset.

Advantages and Disadvantages

Advantages: - Low-power consumption extends battery life in portable devices. - Wide operating voltage range makes it suitable for various applications. - Small package size saves board space. - Accurate voltage monitoring prevents system errors.

Disadvantages: - Limited threshold voltage options may not suit all applications. - Lack of adjustable timeout period limits flexibility in certain scenarios.

Working Principles

The MAX809SQ232T1G operates by comparing the supply voltage with a fixed threshold voltage. When the supply voltage drops below the threshold, the device asserts the RESET pin, triggering a system reset. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX809SQ232T1G finds applications in various electronic systems that require reliable voltage monitoring and reset functionality. Some potential application fields include:

1. Microcontrollers: Ensures proper initialization and protection against undervoltage conditions.
2. Embedded Systems: Provides a controlled reset during power-up and voltage fluctuations.
3. Industrial Control Systems: Monitors power supply integrity to prevent critical failures.
4. Automotive Electronics: Protects sensitive components from voltage dips and spikes.
5. Battery-Powered Devices: Maximizes battery life by preventing deep discharge.

Detailed and Complete Alternative Models

1. MAX809SEUR+: Similar features, but with an adjustable threshold voltage.
2. MAX809REUR+: Higher threshold voltage option for specific applications.
3. MAX809MEUR+: Lower quiescent current for ultra-low-power applications.
4. MAX809TEUR+: Extended temperature range for harsh environments.

These alternative models offer similar functionality with slight variations to cater to different requirements.

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