LM809M3X-4.63/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a specified threshold - Ensures proper operation and prevents data corruption in electronic devices

Package: SOT-23-3

Essence: The LM809M3X-4.63/NOPB is a voltage supervisor IC designed to monitor the power supply voltage of a system and provide a reset signal when the voltage drops below a predetermined threshold.

Packaging/Quantity: The LM809M3X-4.63/NOPB is available in a SOT-23-3 package, which consists of three pins. It is typically sold in reels or tubes containing multiple units.

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/NOPB features a simple three-pin configuration:

• Pin 1: GND (Ground)
• Pin 2: VDD (Supply Voltage)
• Pin 3: RESET (Reset Output)

Functional Features

1. Voltage Monitoring: The LM809M3X-4.63/NOPB continuously monitors the supply voltage of a system.
2. Reset Generation: When the voltage falls below the specified threshold (4.63V), the IC generates a reset signal on the RESET pin.
3. Timeout Period: The reset signal remains active for a fixed timeout period of 200ms, allowing the system to stabilize before resuming normal operation.
4. Low Power Consumption: The IC operates with a low quiescent current of only 2µA, minimizing power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - Provides reliable voltage monitoring and reset generation for electronic systems - Low power consumption ensures efficient operation in battery-powered devices - Compact SOT-23-3 package allows for easy integration into space-constrained designs

Disadvantages: - Fixed reset threshold voltage may not be suitable for all applications requiring different voltage levels - Limited timeout period may not be adjustable for specific system requirements

Working Principles

The LM809M3X-4.63/NOPB operates by comparing the supply voltage against the preset threshold voltage. When the voltage drops below 4.63V, the internal circuitry triggers the RESET pin, generating a reset signal. This signal remains active for the specified timeout period (200ms) to ensure proper system stabilization before resuming normal operation.

Detailed Application Field Plans

The LM809M3X-4.63/NOPB finds application in various electronic systems where voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers: Ensures reliable operation and prevents data corruption during power fluctuations.
2. Embedded Systems: Provides a reset signal to restart the system in case of power supply issues.
3. Industrial Control Systems: Monitors voltage stability to prevent damage to sensitive equipment.
4. Automotive Electronics: Protects electronic components from voltage variations and ensures proper functioning.

Detailed and Complete Alternative Models

1. LM809M3X-4.38/NOPB: Similar to LM809M3X-4.63/NOPB but with a lower reset threshold voltage of 4.38V.
2. LM809M3X-4.75/NOPB: Similar to LM809M3X-4.63/NOPB but with a higher reset threshold voltage of 4.75V.
3. LM809M3X-5.0/NOPB: Similar to LM809M3X-4.63/NOPB but with a reset threshold voltage of 5.0V.

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

In conclusion, the LM809M3X-4.63/NOPB is an integrated circuit voltage supervisor designed to monitor power supply voltage and generate a reset signal when necessary. With its compact package, low power consumption, and reliable functionality, it finds applications in various electronic systems requiring voltage monitoring and reset generation capabilities.