LM317LZ/NOPB

The LM317LZ/NOPB is a popular adjustable voltage regulator manufactured by Texas Instruments. It is part of the LM317 family, which is widely used in various electronic applications due to its versatility and reliability. Here’s a detailed description of its features and specifications:

General Overview:

• Type: Adjustable Linear Voltage Regulator
• Package: Typically available in a TO-220 or TO-263 package, which provides good thermal performance and ease of mounting on PCBs.
• Manufacturer: Texas Instruments

Key Features:

1. Adjustable Output Voltage: The LM317LZ/NOPB can provide an output voltage that can be adjusted from 1.25V to 37V, making it suitable for a wide range of applications.
2. Output Current: It can deliver up to 100 mA of output current, which is sufficient for many low to moderate power applications.
3. Line Regulation: The device exhibits excellent line regulation, typically around 0.01%/V, ensuring stable output voltage despite variations in input voltage.
4. Load Regulation: The load regulation is also impressive, typically around 0.1% for a load change from 0 to 100 mA.
5. Thermal Protection: The LM317LZ/NOPB includes built-in thermal overload protection, which prevents damage due to overheating.
6. Short-Circuit Protection: It features current limiting to protect against short circuits, enhancing the reliability of the circuit.
7. Low Dropout Voltage: The dropout voltage is relatively low, typically around 1.5V at full load, allowing it to operate efficiently even with a small difference between input and output voltage.

Electrical Characteristics:

• Input Voltage Range: The input voltage can range from 3V to 40V, providing flexibility in power supply options.
• Temperature Range: The operating temperature range is typically from -40°C to +125°C, making it suitable for industrial and automotive applications.
• Quiescent Current: The quiescent current is low, which helps in battery-powered applications by extending battery life.

Applications:

The LM317LZ/NOPB is widely used in various applications, including:

• Power supplies for electronic devices
• Battery chargers
• Adjustable power supplies
• Voltage regulation in automotive applications
• Circuit protection in sensitive electronic systems

Conclusion:

The LM317LZ/NOPB from Texas Instruments is a robust and versatile adjustable voltage regulator that is ideal for a variety of electronic applications. Its combination of adjustable output voltage, thermal protection, and low dropout voltage makes it a preferred choice for engineers and designers looking for reliable voltage regulation solutions.