REG102UA-3

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The REG102UA-3 is a low-power, low-dropout linear voltage regulator designed to deliver precise output over a broad range of variable loads. It is able to efficiently regulate a wide range of voltage inputs, meaning it is well-suited for applications that require precise regulation at low power levels. The REG102UA-3 is used to convert a higher input voltage to a lower output voltage, such as a 5V output in the presence of a 6V input. The device is capable of delivering up to 20mA of load current while delivering a tightly regulated 3V or 5V output at up to 12V of input. The device also offers short-circuit protection, thermal shutdown protection, and reverse input protection.

The REG102UA-3 is considered a linear voltage regulator, which means it uses a transistor-based pass element to reduce a higher input voltage to a lower output voltage. The pass element can be either a series element or a shunt element. In the case of the REG102UA-3, the pass element is a series element that acts as a variable resistor, with the resistance determined by the control voltage. In turn, this control voltage is determined by the reference voltage and the error amplifier.

The primary application field of the REG102UA-3 is power supply and voltage regulation tasks, such as powering an electronic circuitry, stabilizing an input AC/DC supply, and providing a constant output voltage at varying load conditions. It can also be used to provide a regulated output voltage or current along with protection against input and output over-voltage, thermal overloads, and excessive current. The device is particularly useful where long-term stability, low-noise output, and extremely low power draw are critical attributes.

The REG102UA-3 also responds rapidly to changing input and output signals and has a high-bandwidth error amplifier. The error amplifier provides current to the transistor-based pass element when the output voltage drops below the reference voltage and shuts off the current when the output voltage exceeds the reference voltage. This allows the IC to maintain its output voltage at a precise reference voltage when the load is varied. The REG102UA-3 also has an ultra-low operating current, enabling it to work in energy-saving applications.

The REG102UA-3 requires low external components, as it integrates all of the necessary components into a single eight-lead SOIC package. The device is well-suited for powering microprocessor-based applications, digital signal processing applications, and many other medium to low-power circuits. It is available in two versions: the REG102UA-3 and the REG102UA-3L, which is identical to the standard version but has an improved tolerance over temperature (down to 0.25%).

The REG102UA-3 is a versatile and cost-effective solution for applications where a precise, low-power, low-dropout linear voltage regulator is required. It is able to efficiently regulate a wide range of input voltages and output currents, deliver a tightly regulated output, and respond quickly to changing input and output signals. The device also features a low operating current, which makes it suitable for energy-saving applications. Furthermore, the device has integrated all of the necessary components into a single eight-lead SOIC package, making it easy to incorporate into any design. The REG102UA-3 is an ideal solution for powering microprocessor-based applications, digital signal processing applications, and many other medium to low-power circuits.

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