LM809M3X-4.63/NOPB PMIC - Супервизоры от Texas Instruments

The LM809M3X-4.63/NOPB is a voltage supervisor integrated circuit (IC) manufactured by Texas Instruments. This device is designed to monitor power supply voltages and provide a reset signal to microcontrollers and other digital devices when the supply voltage falls below a specified threshold. Here’s a detailed description of its features and specifications:

Key Features:

1. Voltage Monitoring: The LM809 monitors supply voltages and ensures that the voltage remains within a specified range. It is particularly useful in battery-operated devices and systems that require reliable power management.

2. Reset Output: The IC provides a reset output signal that is asserted when the supply voltage drops below the preset threshold. This output can be used to reset microcontrollers or other digital logic devices, preventing erratic behavior during power fluctuations.

3. Adjustable Threshold: The LM809 allows for an adjustable reset threshold voltage, which can be set to various levels depending on the application requirements. The specific version, LM809M3X-4.63, has a fixed threshold of 4.63V.

4. Low Supply Current: The device is designed to operate with low supply current, making it suitable for battery-powered applications where power efficiency is critical.

5. Temperature Range: The LM809 is rated for operation over a wide temperature range, typically from -40°C to +125°C, ensuring reliability in various environmental conditions.

6. Compact Package: The LM809M3X-4.63/NOPB is available in a small SOT-23 package, which is ideal for space-constrained applications. The compact size allows for easy integration into printed circuit boards (PCBs).

7. No External Components Required: The design of the LM809 allows it to function without the need for external components, simplifying the circuit design and reducing overall system costs.

Electrical Characteristics:

• Supply Voltage Range: The device operates within a specified voltage range, typically from 2.5V to 5.5V.
• Reset Threshold Voltage: The LM809M3X-4.63 has a fixed reset threshold of 4.63V.
• Reset Timeout: The reset signal is typically held low for a defined period after the supply voltage returns to normal, ensuring that the system has stabilized before re-enabling operation.

Applications:

The LM809M3X-4.63/NOPB is suitable for a variety of applications, including:

• Microcontroller reset circuits
• Power management systems
• Battery-operated devices
• Automotive electronics
• Industrial control systems

Conclusion:

The LM809M3X-4.63/NOPB from Texas Instruments is a reliable and efficient voltage supervisor that provides essential monitoring and reset functionality for digital systems. Its adjustable threshold, low power consumption, and compact design make it an excellent choice for a wide range of electronic applications.