UC282T-3

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UC282T-3 is a linear voltage regulator under the product category of PMIC — Voltage Regulators. Featuring a surface mount package of SOT-223 and SC-74, the component is specifically designed for applications with limited space. By using the high gain internal PNP pass element and a high current voltage reference, it can provide constant output voltage for a wide range of input voltages and temperatures. Not only that, but the device also features a high voltage on/off control input and two high power output transistors that give it a great advantage in applications that require high power supply.

The main application areas of UC282T-3 are demanding load regulation applications. It is primarily used as a pre-regulator in switching power supplies, providing good load and line regulation pre-regulation. This can take pressure off the secondary regulator which is a crucial component in the switching power supplies system. It is also a good choice as a post regulator in similar applications as it can give very accurate voltage control with a minimum of external components. In addition, it can also be used as a low-dropout regulator for other designs, such as those used in automotive and industrial applications.

The working principle of UC282T-3 is very simple. It functions by using an internal PNP pass element and an external high current voltage reference. It implements a constant voltage regulation scheme which means that, for a given input voltage, the output voltage will remain constant over wide ranges of current and temperature. The PNP pass element works by constantly monitoring the output voltage, comparing it with the voltage reference, and adjusting the current through the output until the two values become equal. This gives the device its good load regulation performances so that output voltage remains extremely stable despite changes in input or load current.

In conclusion, UC282T-3 is a linear voltage regulator designed to provide constant output voltage in demanding load regulation applications. Its high gain internal PNP pass element, coupled with a high current voltage reference, enables it to provide very precise and accurate regulation of the output voltage while being able to handle both high and low input voltages. Its easy to use design, combined with its high precision capabilities, make it a great choice for a wide range of applications.

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