BA18BC0WT-V5

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BA18BC0WT-V5 is one of the voltage regulators of the linear PMIC (Power Management IC) family. This Voltage Regulator has wide application fields and works based on its working principle.

The BA18BC0WT-V5 IC features adjustable and fixed output voltage range with a maximum output of 35V and is used in high power applications needing precise voltage regulation. It is a Series Voltage Regulator with positive output voltage, so it can be used to provide constant voltage at the output, even when the load draws variable currents. The input voltage applied to the BA18BC0WT-V5 must be higher than the output voltage by about 3V.

There are mainly two application fields for BA18BC0WT-V5. The first is the high speed DC motor drives. The constant voltage at the output helps the DC motor maintain constant speed even when the input voltage varies. The other application field is in renewable energy systems, such as solar and wind energy. BA18BC0WT-V5 regulate these variable power sources and provide constant supply at the output.

To understand the working principle of BA18BC0WT-V5, we shall consider the internal circuit diagram. There are two control sections, the error amplifier and the output control. The error amplifier compares the input voltage and the output voltage across a feedback resistor. It produces an error voltage, which is amplified and used to control the output control section. The output control section operates using a series regulator configuration, which includes a Darlington pair, pass transistor and a zener diode. It maintains the voltage difference between the input and output, even when the load current changes.

The pass transistor acts as a switch, turning on and off based on the error voltage. It allows current to flow from the input to the output depending on the load drawn from the load. The Darlington pair operated in the reverse active mode and helps in fast transitions of the pass transistor. It helps the IC maintain constant output voltage and respond quickly to changes in load, so that it can maintain fast response time. Finally, the zener diode helps the output control section to provide the required output voltage.

In short, the BA18BC0WT-V5 is a linear PMIC voltage regulator with adjustable and fixed output voltage range. Its wide application fields include high-speed DC motor drives and renewable energy systems, such as solar and wind energy. The internal circuit consists of an error amplifier and an output control section, with a series regulator configuration. The error amplifier and the output control section work together and help the BA18BC0WT-V5 regulate voltage and maintain a constant supply even when the input voltage changes.

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