REG102NA-2.85/3K

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REG102NA-2.85/3K Voltage Regulator Application Field and Working Principle

The REG102NA-2.85/3K voltage regulator is one of Linear Technology\'s PMIC (Power Management ICs) variable voltage regulators. It provides strong, accurate, and reliable output voltage regulation in a number of applications, including AC/DC wall transformers, DC/DC converters, and battery powered devices. This ultra-low-dropout regulator features premium stability, low noise, and excellent efficiency in a tiny 3-pin SOT-23 package. It has an input voltage range of 3V to 6V and an output voltage range of 0.75V to 3.3V.

The REG102NA-2.85/3K is designed for a variety of applications, including powering microprocessors, wireless and optical transceiver, DSP peripherals, memory, and communication interface circuits. It is also ideal for automotive, personal computer, telecommunications, and consumer electronics applications.

Working Principle

The REG102NA-2.85/3K utilizes a two-stage low power regulation architecture to achieve a high degree of precision, low dropping voltage and a fast transient response. It uses an internal voltage reference and error amplifier to compare the regulated output voltage with the reference and the amplified difference is used to control the pass transistor of the regulator. This allows the regulator to maintain a constant output voltage in spite of changes in line, load and temperature. Additionally, the output voltage (Vo) can be fine-tuned through adjustment of an external feedback resistors.

The REG102NA-2.85/3K also has a power-on reset (POR) feature which ensures that the regulator start-up from a no-load condition. This POR function monitors the input voltage and if the input voltage is above a certain specified level, the voltage supply will be enabled. When the input voltage drops, the supply is inhibited until the input voltage increases to the pre-set value. This POR feature is useful in providing a stable output voltage during varying environmental conditions.

The REG102NA-2.85/3K is a high performance, low-power voltage regulator which provides a wide range of output voltages, high accuracy, and fast transient response time. It is ideal for a variety of applications, from AC/DC wall transformers, DC/DC converters, to battery-powered devices. With its precise voltage regulation, low-drop and fast response, the REG102NA-2.85/3K is the ideal solution for any PMIC - Voltage Regulators - Linear applications.

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