LM809M3X-4.63

Overview

Product Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage drops below a specified threshold - Ensures proper operation and prevents data corruption in microcontrollers and other digital systems

Package: SOT-23-3

Essence: The LM809M3X-4.63 is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems and provide a reset signal when the voltage falls below a predetermined level.

Packaging/Quantity: The LM809M3X-4.63 is typically available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: 4.63V
• Reset Timeout Period: 200ms (typical)
• Quiescent Current: 2µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM809M3X-4.63 features a standard SOT-23-3 package with the following pin configuration:

____ VDD| |GND RST|____|

Functional Features

• Accurate monitoring of power supply voltage
• Precision voltage reference for accurate threshold detection
• Open-drain output for flexibility in interfacing with various microcontrollers and digital systems
• Low quiescent current for power efficiency
• Built-in hysteresis to prevent oscillation near the threshold voltage

Advantages

• Small form factor and low power consumption make it suitable for portable and battery-powered applications
• Wide supply voltage range allows compatibility with various systems
• Accurate reset threshold ensures reliable system operation
• Open-drain output allows for easy integration with different microcontrollers and digital systems

Disadvantages

• Fixed reset threshold voltage may not be suitable for all applications requiring different voltage levels
• Lack of adjustable timeout period limits flexibility in certain scenarios

Working Principles

The LM809M3X-4.63 operates by comparing the power supply voltage (VDD) against a fixed threshold voltage. When VDD falls below the threshold voltage, the internal comparator triggers, pulling the RST pin low and generating a reset signal. The reset signal remains active until VDD rises above the threshold voltage and the reset timeout period elapses.

Detailed Application Field Plans

The LM809M3X-4.63 is commonly used in various electronic systems where reliable power supply monitoring and reset functionality are crucial. Some typical application fields include:

1. Microcontroller-based Systems: Ensures proper initialization and prevents data corruption during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides reliable reset functionality to ensure safe and controlled operation of critical equipment.
3. Automotive Electronics: Monitors the vehicle's power supply voltage to prevent malfunctions and protect sensitive components.
4. Battery-Powered Devices: Protects battery life by initiating a reset when the voltage drops below a safe operating level.

Detailed and Complete Alternative Models

1. LM809M3X-4.00: Similar to LM809M3X-4.63 but with a lower reset threshold voltage of 4.00V.
2. LM809M3X-5.00: Similar to LM809M3X-4.63 but with a higher reset threshold voltage of 5.00V.
3. LM809M3X-3.30: Similar to LM809M3X-4.63 but with a lower reset threshold voltage of 3.30V.
4. LM809M3X-2.50: Similar to LM809M3X-4.63 but with a lower reset threshold voltage of 2.50V.

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

In conclusion, the LM809M3X-4.63 is an integrated circuit voltage supervisor designed to monitor power supply voltage and generate a reset signal when necessary. Its small form factor, low power consumption, and accurate threshold detection make it suitable for a wide range of applications in various industries.