LM809M3X-3.08

Product Overview

Category

The LM809M3X-3.08 belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the voltage levels in electronic circuits.

Characteristics

• Voltage threshold: 3.08V
• Low quiescent current: <10µA
• Wide operating voltage range: 1.6V to 5.5V
• Accuracy: ±2%
• Reset timeout delay: 200ms (typical)
• Active-low push-pull output
• Small package size for space-constrained applications

Package

The LM809M3X-3.08 is available in a small SOT-23 package, which is suitable for compact electronic devices.

Essence

The essence of the LM809M3X-3.08 lies in its ability to provide reliable voltage monitoring and reset generation in various electronic systems.

Packaging/Quantity

This product is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage: 3.08V
• Quiescent Current: <10µA
• Accuracy: ±2%
• Reset Timeout Delay: 200ms (typical)
• Output Type: Active-Low Push-Pull

Detailed Pin Configuration

The LM809M3X-3.08 features a standard SOT-23 package with three pins:

1. VDD: Connect this pin to the positive supply voltage.
2. GND: Connect this pin to the ground reference.
3. RESET: This pin outputs an active-low signal indicating a reset condition when the monitored voltage falls below the threshold.

Functional Features

• Voltage Monitoring: The LM809M3X-3.08 continuously monitors the input voltage and generates a reset signal when it falls below the threshold.
• Reset Generation: The active-low reset signal is provided to ensure proper system initialization after a power-on or voltage drop event.
• Low Quiescent Current: With a quiescent current of less than 10µA, this device minimizes power consumption in battery-powered applications.
• Wide Operating Voltage Range: The LM809M3X-3.08 can operate within a wide voltage range from 1.6V to 5.5V, making it suitable for various electronic systems.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring and reset generation.
• Low power consumption.
• Small package size for space-constrained designs.
• Wide operating voltage range allows for versatile applications.

Disadvantages

• Fixed threshold voltage may not be suitable for all voltage monitoring requirements.
• Lack of adjustable timeout delay limits customization options.

Working Principles

The LM809M3X-3.08 operates based on a voltage comparator circuit. It compares the input voltage with the fixed threshold voltage (3.08V) set internally. When the input voltage drops below the threshold, the comparator triggers the reset signal, indicating a reset condition. This signal remains active until the input voltage rises above the threshold and the reset timeout delay (200ms) elapses.

Detailed Application Field Plans

The LM809M3X-3.08 finds applications in various fields, including:

1. Battery-Powered Devices: It ensures proper system reset and initialization in portable electronics, such as smartphones, tablets, and wearables.
2. Industrial Control Systems: It provides voltage monitoring and reset functionality in industrial automation equipment, ensuring reliable operation.
3. Automotive Electronics: It plays a crucial role in automotive systems, monitoring voltage levels and generating resets when necessary, enhancing safety and reliability.
4. Medical Devices: It ensures the stable operation of medical equipment by monitoring voltage levels and initiating resets in case of voltage fluctuations.

Detailed and Complete Alternative Models

1. LM809M3X-2.93: Similar to LM809M3X-3.08, but with a lower threshold voltage of 2.93V.
2. LM809M3X-3.30: Similar to LM809M3X-3.08, but with a higher threshold voltage of 3.30V.
3. LM809M3X-3.00: Similar to LM809M3X-3.08, but with a slightly lower threshold voltage of 3.00V.

These alternative models provide flexibility in voltage monitoring applications, allowing users to select the appropriate threshold voltage for their specific requirements.

In conclusion, the LM809M3X-3.08 is a voltage supervisor device that offers accurate voltage monitoring, reset generation, and low power consumption. Its small package size and wide operating voltage range make it suitable for various electronic systems. However, its fixed threshold voltage and lack of adjustable timeout delay may limit customization