LM317sarjat

The LM317 series is a family of three-terminal adjustable voltage regulators produced by National Semiconductor (now part of Texas Instruments). These regulators are widely used in electronic circuits to provide a stable and adjustable output voltage. The LM317 series includes several models, each with different specifications and features, but they all share the same basic design and functionality.

The LM317 series operates by using a reference voltage and a pass transistor to regulate the output voltage. The reference voltage is typically around 1.25 volts, and the pass transistor is used to adjust the output voltage to the desired level. The LM317 series can provide output voltages ranging from 1.2 volts to 37 volts, with a maximum output current of 1.5 amperes.

The LM317 series is available in several package types, including TO-220, TO-92, and SOT-223. The TO-220 package is the most common and is suitable for high-power applications, while the TO-92 and SOT-223 packages are smaller and are suitable for low-power applications.

The LM317 series is widely used in a variety of applications, including power supplies, battery chargers, and voltage regulators. It is a popular choice for hobbyists and professionals alike due to its simplicity, reliability, and low cost. However, it is important to note that the LM317 series has a relatively low dropout voltage, which means that it requires a significant input voltage to achieve a stable output voltage. Additionally, the LM317 series has a relatively high quiescent current, which can be a concern in low-power applications. Despite these limitations, the LM317 series remains a popular and widely used voltage regulator.