LM317LCDRE4

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The LM317LCDR4 is a high-performance, low-noise, low-dropout linear voltage regulator in a TO-292 package. It can provide up to 0.6V dropout voltage and a maximum output current of 1.5A, along with excellent noise performance. The LM317LCDR4 is designed for applications requiring low power consumption, compact size and improved PSU efficiency.

Application field

The LM317LCDR4 is widely used in various fields. It is perfect for applications such as notebooks, PDAs, USB Hosts, industrial controls, automotive, wireless and networking products. Its low dropout voltage and high output current capabilities make it well-suited for use in power supplies, battery chargers and voltage regulators. Its low thermal resistance also ensures that it is highly reliable even in tight mounting conditions.

The low output noise level of the LM317LCDR4 makes it more suitable for applications that require an accurate voltage regulation, such as audio and video equipment. Its noise adding feature is also useful for regulating DC signals. Additionally, its high output current capabilities make it suitable for high power applications.

Working Principle

The LM317LCDR4 is a voltage regulator. It uses its proprietary IC technology to generate high-precision, low-noise, Low Dropout (LDO) linear voltage regulation. The device uses a series of pins and connections to transfer the input voltage to the output voltage. The series consist of an input capacitor, error amplifier, compensation network, two power transistors, a control logic block and a reference.The input capacitor is used to smooth any ripples in the input voltage and provide a stable voltage to the error amplifier. The error amplifier compares the input voltage with the reference voltage provided by the reference. It then adjusts the output of the control logic block, which in turn adjusts the power transistor’s gate voltage. This, in turn, adjusts the output voltage.

The LM317LCDR4 also provides an adjustment pin, which can be used to accurately adjust the output voltage, as well as an overtemperature protection pin, which protects the device from any possible thermal runaway. The LM317LCDR4 also has a wide input voltage range of 1V to 40V.

In summary, the LM317LCDR4 is a high-efficiency, low-noise, low-dropout linear voltage regulator. It is designed for a wide range of applications such as power supplies, battery chargers, audio and video equipment and other sensitive systems. Its low dropout voltage and high output current capability make it suitable for high power applications, and its wide input voltage range make it suitable for a variety of applications.

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