LM3880MFX-1AE/NOPB

The LM3880MFX-1AE/NOPB is a voltage supervisor integrated circuit (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 fluctuations.

Key Features:

1. Voltage Monitoring: The LM3880 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 the monitored voltage is below the threshold. This output can be directly connected to the reset pins of microcontrollers or other digital devices.

4. Low Quiescent Current: The LM3880 is designed to operate with low quiescent current, making it suitable for battery-powered applications where power efficiency is critical.

5. Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

6. Small Package Size: The LM3880MFX-1AE/NOPB comes in a compact MFP (Micro-Fine Pitch) package, which is ideal for space-constrained designs.

7. Built-in Hysteresis: The IC features built-in hysteresis to prevent rapid toggling of the reset output during voltage fluctuations, ensuring stable operation.

8. No External Components Required: The LM3880 can function without the need for additional external components, simplifying the design process and reducing board space.

Applications:

• Microcontroller and microprocessor reset circuits
• Power supply monitoring in embedded systems
• Automotive electronics
• Industrial control systems
• Battery-powered devices

Electrical Characteristics:

• Supply Voltage Range: Typically operates from 1.5V to 5.5V.
• Reset Threshold Voltage: Configurable based on external resistor values.
• Reset Timeout: The reset signal remains low for a specified duration after the supply voltage returns to normal, ensuring that the system has stabilized before resuming operation.

Conclusion:

The LM3880MFX-1AE/NOPB from Texas Instruments is a versatile and reliable voltage supervisor that enhances the stability and reliability of electronic systems. Its adjustable threshold, low power consumption, and compact design make it an excellent choice for a wide range of applications, particularly in environments where power supply integrity is critical.