ZHT2431F02TC

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PMIC (Power Management Integrated Circuit) is a chip that provides power management and voltage regulation. Voltage references are used in PMIC to maintain a constant voltage level. Voltage reference is a well defined, stable, and accurate voltage source. The most commonly used type of voltage reference is a shunt regulator. The ZHT2431F02TC is an example of a shunt regulator voltage reference used in PMIC.

The ZHT2431F02TC is a low-dropout (LDO) voltage reference designed especially for PMIC applications. It is manufactured by Zilog Inc. and is a 2 ohm resistor which provides precision voltage regulation and temperature compensation. The device is housed in a small TO-220 package and provides an output voltage of 1.4V with adjustable current limit. It features a wide input voltage range (3.3V to 24V), an adjustable voltage reference range from 1.2V to 1.8V, and a temperature stability of 0.2%.

The working principle behind the ZHT2431F02TC is based on a shunt voltage regulator topology. In this topology, a shunt resistor is connected in parallel with the load. The current passing through the resistor is proportional to the input voltage, and it adjusts the output voltage by modulating the voltage drop across the shunt resistor. When the input voltage exceeds the reference voltage, the current passes through the resistor, thus lowering the output voltage. Similarly, when the input voltage is lower than the reference voltage, the current passing through the resistor decreases and the output voltage increases.

The main application field of the ZHT2431F02TC is in PMIC applications such as battery chargers and voltage regulators. It can also be used in motor drive applications and power supply systems. Its low-dropout (LDO) feature makes it ideal for use in portable applications where a minimum number of external components are required.

The ZHT2431F02TC is an important component of modern PMICs as it provides a reliable and accurate voltage reference for power management and voltage regulation. Its wide input voltage range, small size, and low power consumption make it an ideal choice for many power management applications. With its shunt voltage regulator topology, it can also be used in other applications where precise regulation of the output voltage is required. The device is widely used in PMIC applications such as battery charging and voltage regulators, motor drives, and power supplies.

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