TL317CDE4

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TL317CDE4 is a linear voltage regulator and forms part of a family of low dropout regulators produced by Texas Instruments. The product utilizes a PNP bipolar transistor and a series pass voltage reference to regulate output voltage levels. It features high accuracy, low temperature coefficients and good load regulation, and is ideal for use in general purpose or battery applications.

TL317CDE4 has been designed with a high current rating, allowing it to deliver up to 1A and support a wide range of regulated output voltages, from 0.8V to 26V. It provides an improved input voltage range of up to 32V, making it suitable for powering a wide variety of applications where power sources may not typically run such high input voltages, like automotive and medical applications.

Additionally, TL317CDE4 includes programmable current limit, temperature protection and in-rush current limiting to protect the device against unexpected current overloads, temperature transients and component stress. The device features a wide operational temperature range, from -40°C to +125°C, making it suitable for applications requiring operation in extreme temperatures.

TL317CDE4 offers excellent performance due to its high accuracy and stability, as well as its low ripple and noise characteristics. It features a low operating temperature coefficient of 0.01%/°C, providing good transient response and allowing the device to maintain its output voltage levels despite overshoot or undershoot conditions.

The TL317CDE4 part is designed to satisfy sophisticated power supply needs in a range of application areas. It can be used as a linear voltage regulator in automotive systems, multimedia systems, medical equipment, industrial and embedded systems, and other power-sensitive applications.

The basic operating principles of the TL317CDE4 linear regulator involves compensating the output voltage via a control loop, which compares the output voltage to the reference voltage. When the output voltage drops below the reference voltage, the device compensates by increasing the output voltage with more current until the reference voltage is reached. Conversely, when the reference level is exceeded, the output voltage is decreased until the reference level is attained.

Thus, the TL317CDE4 linear regulator comprises of a series pass transistor structure, a reference voltage, current limiting and thermal protection features, an error amplifier block and feedback network for monitoring the output voltage, and an output done for driving the load.

In summary, the TL317CDE4 is a low dropout, PNP bipolar linear voltage regulator that provides high accuracy, wide input voltage range and extended temperature range, making it suitable for a wide range of applications. Its low ripple and noise characteristics, high accuracy, low temperature coefficient and good load regulation gives it excellent overall performance.

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