LM809M3X-2.93

Overview

The LM809M3X-2.93 is a product belonging to the category of voltage supervisors. It is commonly used in electronic circuits to monitor and control the power supply voltage. This device ensures that the voltage remains within specified limits, preventing damage to sensitive components and ensuring reliable operation. The LM809M3X-2.93 exhibits several characteristics that make it suitable for various applications. It comes in a compact package, has low power consumption, and offers accurate voltage monitoring capabilities.

Package and Quantity

The LM809M3X-2.93 is typically available in a small SOT-23 package. Each package contains one unit of the voltage supervisor.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage: 2.93V
• Accuracy: ±1%
• Quiescent Current: 1.5µA (typical)
• Power-On Reset Delay: 200ms (typical)

Pin Configuration

The LM809M3X-2.93 features a three-pin configuration:

1. VDD: Connects to the positive supply voltage.
2. GND: Connects to the ground reference.
3. RESET: Output pin that indicates the status of the monitored voltage.

Functional Features

The LM809M3X-2.93 provides the following functional features:

• Precision Monitoring: The device accurately monitors the supply voltage and asserts the RESET pin when it falls below the threshold voltage.
• Power-On Reset: It ensures that the RESET pin remains asserted during power-up until the supply voltage reaches the specified threshold.
• Manual Reset Input: An external push-button can be connected to the RESET pin to manually reset the system.
• Low Power Consumption: The LM809M3X-2.93 consumes minimal power, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Compact size allows for easy integration into space-constrained designs. - Accurate voltage monitoring ensures reliable operation of electronic circuits. - Low power consumption prolongs battery life in portable devices.

Disadvantages: - The fixed threshold voltage may not be suitable for all applications requiring different voltage levels. - Lack of adjustable hysteresis limits flexibility in certain scenarios.

Working Principles

The LM809M3X-2.93 operates based on a voltage comparator circuit. It compares the supply voltage with the internally set threshold voltage. When the supply voltage drops below the threshold, the RESET pin is asserted, indicating a low-voltage condition. Once the supply voltage rises above the threshold, the RESET pin is de-asserted.

Application Field Plans

The LM809M3X-2.93 finds applications in various fields, including but not limited to:

1. Battery-Powered Devices: It ensures proper functioning by monitoring the battery voltage and preventing damage due to undervoltage conditions.
2. Microcontroller Systems: The voltage supervisor guarantees stable operation by resetting the microcontroller during power-up and voltage fluctuations.
3. Industrial Control Systems: It provides reliable voltage monitoring in industrial environments, protecting sensitive components from voltage variations.

Alternative Models

For those seeking alternative options, the following models can be considered:

1. LM809M3X-3.08: Similar to LM809M3X-2.93, but with a higher threshold voltage of 3.08V.
2. LM809M3X-2.63: Similar to LM809M3X-2.93, but with a lower threshold voltage of 2.63V.
3. LM809M3X-2.5: Similar to LM809M3X-2.93, but with a lower threshold voltage of 2.5V.

In conclusion, the LM809M3X-2.93 is a voltage supervisor that provides accurate monitoring and control of supply voltages. Its compact size, low power consumption, and reliable functionality make it suitable for various applications in different fields.