LM317LILPE3

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The LM317LILPE3 is a type of Linear Voltage Regulator, more specifically known as a Positive Voltage Regulator. It is a three terminal adjustable voltage regulator with an output voltage range of 1.2V to 37V. The LM317LILPE3 can supply up to 1.5A of output current and utilizes a low dropout (LDO) voltage regulator technology to maintain a remarkably low quiescent current (1.5mA Max). In addition, the LM317LILPE3 provides enhanced line and load regulation, and temperature stability in a small package. This makes it ideal for use in applications where a power supply needs to have low noise and precision regulation.

The LM317LILPE3 is frequently used in high-end consumer and professional audio and video applications because of its low noise and good temperature stability. Additionally, it is commonly found in precision timing systems, current limit, high voltage power supplies and local voltage regulation. Due to its wide input voltage range (2V to 37V), the LM317LILPE3 is an excellent regulator choice in a wide range of applications.

The LM317LILPE3 utilizes a three-terminal linear adjustment circuit that is capable of regulating an output voltage between 1.2V and 37V, and can provide up to 1.5A of output current. It is designed so that the voltage between the adjustment pin and output pin is always positive, even when a current is flowing through the regulator in either direction. The adjustment pin is used to adjust the output voltage from the LM317LILPE3 by providing a voltage divider to the internal bandgap reference. The output voltage is set by the following equation: Output Voltage (Vout) = RefVoltage × (1+R2/R1).

The LM317LILPE3 also contains several protection features, making it well suited for use in harsher operating conditions. The regulator is short circuit protected, with an internal current limit of 1.5A. Additionally, the device is protected for Reverse Battery, Thermal Protection, as well as OVP (Over Voltage Protection). Reverse battery protection prevents damage to the IC caused by reverse-polarity connections on the input rails, while OVP prevents the output voltage from exceeding its maximum rating due to an overshoot or system malfunction.

The LM317LILPE3 is available in a wide variety of packages, making it suitable for a variety of system form factors. It is available in a 3-terminal TO-220 package, or optionally in a SMD / SOIC package. The TO-220 package offers easier mounting, as well as better thermal transfer due to its metal tab. The SMD / SOIC package, on the other hand, is more suitable for space-constrained applications where board real estate is limited.

In summary, the LM317LILPE3 is a wide input voltage range, low noise, and extremely precise three-terminal adjustable voltage regulator. It is widely used in consumer, industrial and professional-grade audio and video applications, as well as in precision timing systems, current limit power supplies, and local voltage regulation. Its short circuit protection and other protection features make it suitable for use in more demanding operating environments. The LM317LILPE3 is available in a wide variety of packages, making it an ideal voltage regulator solution in an increasing variety of applications.

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