TL317CPWE4

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TL317CPWE4 Application Field and Working Principle

Designed by ON Semiconductor, the TL317CPWE4 is a constant-voltage, constant-current regulator IC. It is a part of the PMIC (Power Management IC) family, specifically the Voltage Regulators category, and is a Linear type. It offers the user an integrated circuit solution that is projected to provide excellent output with great accuracy over a single-device platform without the usage of multiple voltage-regulation devices.

Features

The TL317CPWE4 is a low-voltage, high-current voltage regulator that operates with a 1.2 MHz switching frequency and features a current limit of 3.2A. It houses a wide input voltage source of 4.5V-36V, thus providing superior output voltage from 1.25V to 33V. More features like thermal protection, over current protection, and short-circuit protection makes it a viable choice for high-current applications. The device also has a power-good indicator for short-circuit and over voltage protection.

Applications

Due to its wide range of input and output voltages, the TL317CPWE4 is suitable for a variety of applications. It can be employed in a number of power conditioning applications, such as LED lighting, LED displays, power supplies, and audio amplifiers. The device is also ideal for automotive, consumer, and computing applications with efficient and great performance.

Working Principle

The TL317CPWE4 uses a constant-voltage, constant-current regulation technique. It works by using a comparison circuit that utilizes voltage feedback. This technique is guided by an internal current-limit indicator, and this current-limit indicator works alongside the voltage samples produced. Depending on the examined voltages, the output will either rise or fall. This allows the regulator to accurately and reliably maintain the output voltage and current.

The regulator also offers an additional power-good indicator for short-circuit and over voltage protection. This indicator works in tandem with the comparison circuit to accurately monitor the state of the device. It can provide an indication when the device is finely regulated or when the input or output voltages are outside the desired range. With the use of this power good indicator, the regulators can communicate any voltage deviations between the input and output in an efficient manner.

Conclusion

The TL317CPWE4 is an excellent linear voltage regulator designed by ON Semiconductor. With its wide input and output voltage ranges, it is the ideal device for high-current applications. Moreover, the device comes equipped with thermal, over current, and short-circuit protection features. Finally, it uses a constant-voltage and constant-current regulation technique to deliver unprecedented output accuracy and reliability. The TL317CPWE4 is an ideal device that can provide an efficient solution for a multitude of power conditioning applications.

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