AP2128K-4.75TRG1

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The AP2128K-4.75TRG1 voltage regulator is a linear era member of the power management integrated circuit (PMIC) family. This voltage regulator is a low-dropout linear regulator intended for voltage regulation in systems that require low current and low power consumption. It provides reliable voltage regulation with high accuracy and wide output voltage range.

The AP2128K-4.75TRG1 voltage regulator is used in a variety of applications, including embedded systems, automotive, industrial, communications, and desktop systems. In embedded systems, it can be employed to power memory, microprocessors, peripheral devices, and other electronic components. In automotive systems, the voltage regulator can be used to power various automotive electronics, such as parking sensors, navigation systems, and multimedia entertainment systems. In industrial and communications systems, it can be used to power computer controlled sensors for machine monitoring, as well as provide power for series voltage regulation in communication systems.

The working principle of the AP2128K-4.75TRG1 voltage regulator is based on a linear regulator architecture. To ensure stable operation and high accuracy, a feedback loop is employed in the regulator. This feedback loop is composed of an error amplifier, reference voltage, and a pass device. The error amplifier senses the output voltage and compares it to the reference voltage. If the output voltage deviates from the reference voltage, the error amplifier will adjust the current to the pass device, thus compensating for the deviation. The pass device is a MOSFET that controls the flow of current out of the regulator to the output.

The AP2128K-4.75TRG1 voltage regulator can be configured in either a fixed output voltage or adjustable output voltage. In the fixed output voltage configuration, the reference voltage is determined by the voltage set resistor. The voltage set resistor is placed between the VSET and GND pins. In the adjustable output voltage configuration, the reference voltage is determined by an external voltage divider connected to the VSET pin. This allows for precise voltage accuracy and fine-tuning of the signal.

The AP2128K-4.75TRG1 has a wide operating range from -40°C to 125°C and is built with a thermal shutdown feature to protect the device from overheating. Additionally, the output voltage is continuously monitored for faults and protected against over-current and over-temperature events. The device is also protected against reverse current flow, and reverse polarity protection is ensured by an internal diode.

The AP2128K-4.75TRG1 voltage regulator is a highly efficient, low-power linear regulator that is ideal for sensitive and low current applications. It provides accurate voltage regulation, protection against over-temperature and over-current events, and built-in reverse current protection. The device is suitable for use in a wide range of applications where reliable and low-power voltage regulation is required. With its wide range of features, this voltage regulator is an excellent choice for all types of voltage regulation projects.

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