UC282T-1

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Linear voltage regulators are a common tool for adjusting the voltage levels present in electrical circuits and power supplies. UC282T-1 is a NPN linear voltage regulator with an operating range of 1.8V to 32V and a large current range of up to 750mA, suitable for various applications. Its ultra-low voltage dropout voltage, frequency compensation circuit, and wide-range operation makes it an attractive regulator.

Features of the UC282T-1

The UC282T-1 features several unique characteristics that make it a viable option for voltage regulation applications. It has an ultra-low voltage dropout of 0.2V, meaning that it does not require an extra voltage drop across it before the load can be powered. The wide operational range of 1.8V-32V allows it to efficiently regulate current in a variety of different circuits. Additionally, it has a high output current of 750mA that allows it to effectively drive large load currents. The device also features a frequency compensation circuit that ensures stable regulation even with varying input or load conditions, and a built-in thermal protection circuit that helps prevent damage due to overheating.

UC282T-1 Application Fields

The UC282T-1 has a wide application range that can fit different applications. It is suitable for use in industrial, automotive, and mobile device systems that require efficient voltage regulation and current driving. It is able to easily support multiple-cell battery packs, allowing it to be used in portable handheld devices such as cell phones and tablets. It is also suitable for voltage regulatration in medical instruments, lighting controllers, and other circuits where precision is critical. Additionally, its frequency compensation circuit makes it ideal for use in switching power supplies and DC-DC converters.

UC282T-1 Working Principle

The UC282T-1 is a linear voltage regulator that uses an NPN transistor as its main switching element. The input voltage is supplied to the base of the transistor via a resistor divider network. The transistor operates as a switch to regulate the current that is supplied to the collector. The output of the transistor is connected to the load through a pass transistor, which is turned on when the voltage at the collector exceeds the reference voltage. The reference voltage is established by a differential amplifier circuit and can be adjusted accordingly. The base-emitter voltage of the NPN transistor is then used to establish a feedback loop, allowing this voltage regulator to accurately control the output voltage.

The UC282T-1 also features an auto-startup circuit which automatically turns on the pass transistor when the output voltage reaches a certain level. This ensures stable voltage regulation even when the input voltage varies over a wide range. The device is also equipped with a thermal protection circuit that turns off the pass transistor when its temperature reaches a certain threshold. This prevents the device from getting damaged due to overheating.

Conclusion

The UC282T-1 is a versatile and reliable linear voltage regulator that can support a wide range of applications. Its ultra-low voltage dropout, frequency compensation circuit, wide operational range, and built-in thermal protection circuit ensure that it can effectively and accurately regulate voltage levels in a variety of different circuits and power supplies. As such, it is an ideal choice for a variety of voltage regulation applications.

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