LM3881MM/NOPB

The LM3881MM/NOPB is a voltage supervisor and reset IC manufactured by Texas Instruments. It 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. This ensures that the system operates reliably and prevents erratic behavior during power-up or power-down conditions.

Key Features:

1. Voltage Monitoring: The LM3881 monitors the supply voltage and generates a reset signal when the voltage drops below a predetermined threshold. This is crucial for maintaining the integrity of digital circuits.

2. Adjustable Reset Threshold: The device allows for an adjustable reset threshold, which can be set using external resistors. This flexibility enables designers to tailor the reset voltage to their specific application requirements.

3. Active-Low Reset Output: The reset output is active-low, meaning it goes low when a reset condition is detected. This output can be directly connected to the reset pin of a microcontroller or other digital devices.

4. Debounce Time: The LM3881 includes a built-in debounce time feature, which helps to filter out noise and prevent false triggering of the reset signal during transient conditions.

5. Wide Operating Voltage Range: The device operates over a wide voltage range, typically from 1.5V to 5.5V, making it suitable for various applications, including battery-powered devices and systems with different supply voltages.

6. Low Quiescent Current: The LM3881 is designed to consume minimal power in its idle state, which is particularly beneficial for battery-operated applications where power efficiency is critical.

7. Temperature Range: The device is rated for operation over an extended temperature range, ensuring reliable performance in various environmental conditions.

8. Package Type: The LM3881MM/NOPB is available in a small surface-mount package (MSOP-8), which is ideal for space-constrained applications.

Applications:

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

Conclusion:

The LM3881MM/NOPB from Texas Instruments is a versatile and reliable voltage supervisor that enhances the stability and reliability of electronic systems. Its adjustable reset threshold, low power consumption, and compact package make it an excellent choice for a wide range of applications where voltage monitoring and reset functionality are essential.