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LM317BT

LM317BT Description

The LM317BT is a versatile, adjustable linear voltage regulator from onsemi, designed to provide a stable and efficient power supply solution. This device features a single positive output configuration, capable of delivering up to 1.5A of current with an adjustable output voltage ranging from 1.2V to 37V. The LM317BT is housed in a through-hole TO220 package, making it suitable for a wide range of applications.

LM317BT Features

• Adjustable Output Voltage: The LM317BT offers an adjustable output voltage range from 1.2V to 37V, providing flexibility in various power supply applications.
• High Output Current: With a maximum output current of 1.5A, the LM317BT can handle demanding power requirements in a single regulator.
• Over Current, Over Temperature, and Short Circuit Protection: The LM317BT is equipped with built-in protection features to ensure reliable operation and prevent damage in case of faults.
• High PSRR: The LM317BT boasts a high power supply rejection ratio (PSRR) of 80dB to 65dB at 120Hz, ensuring minimal noise coupling from the input to the output.
• Low Quiescent Current: The LM317BT consumes only 10mA of quiescent current, making it an energy-efficient solution for low-power applications.
• Wide Input Voltage Range: The LM317BT can handle input voltages up to 40V, making it suitable for a variety of power supply sources.

LM317BT Applications

The LM317BT is ideal for a wide range of applications, including:

1. Power Supply Designs: The LM317BT can be used as a primary voltage regulator in various power supply designs, providing a stable and adjustable output voltage.
2. Battery Charging Circuits: The LM317BT can be employed in battery charging circuits to provide a regulated output voltage, ensuring safe and efficient charging.
3. LED Drivers: The LM317BT can be used in LED driver circuits to provide a stable and adjustable current source, ensuring consistent brightness and preventing overcurrent.
4. Audio Amplifiers: The LM317BT can be utilized in audio amplifier designs to provide a stable and low-noise power supply, enhancing audio quality.

Conclusion of LM317BT

The LM317BT is a robust and versatile linear voltage regulator, offering a wide range of features and benefits for various power supply applications. Its adjustable output voltage, high output current, and built-in protection features make it an ideal choice for demanding power supply designs. However, it is important to note that the LM317BT is currently classified as obsolete, which may affect its availability and support. Despite this, the LM317BT remains a reliable and cost-effective solution for a variety of applications in the electronics industry.