BU28TD2WNVX-TL Integrated Circuits (ICs)

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The BU28TD2WNVX-TL is a positive voltage-regulator integrated circuit utilizing integrated sub power technology, ideal for a variety of consumer electronic applications that require exceptional noise and thermal performance. The BU28TD2WNVX-TL provides an adjustable output voltage range of 1.25V to 3.3V, with a maximum output current of 1A. This voltage regulator operates from an input voltage between 5V and 10V, making it suitable for wide range of consumer electronics applications.

When it comes to voltage regulator integrated circuits, there are two common types of regulation. The first type is linear regulation, which is the typical solution for consumer electronics applications, where output voltage is regulated with a linear reduction from the input voltage. This is the type employed by the BU28TD2WNVX-TL. The second type of regulation is switching regulation, where an integrated circuit switches the current to regulate the output voltage, with a higher efficiency but more complex integration and more noise.

The working principle of a linear voltage regulator is based on a series pass transistor, whose base-current is controlled through an error amplifier. The function of the error amplifier is to compare the output voltage to a reference voltage and adjust the base-current of the series pass transistor accordingly. If a load is connected to the output of the regulator, the output voltage drops according to the load current. The error amplifier detects the drop in output voltage and increases the base current to the series pass transistor, which in turn increases the output voltage so that it reaches the reference value. As load current is the only factor that affects the output voltage, the BU28TD2WNVX-TL can maintain a stable output voltage even when the input voltage fluctuates.

The BU28TD2WNVX-TL can be used to generate a stable voltage for many common consumer electronics applications such as cell phones, GPS systems, PDAs, digital cameras,notebooks, tablet computers, video game consoles, and more. In addition, the wide input voltage range of 5V to 10V allows the integrated circuit to be used in automotive, industrial, and telecom applications such as voltage converters, embedded systems,power conditioning, power supply for audio amplifiers, portable instruments, and so on.

The BU28TD2WNVX-TL features an integrated thermal shutdown circuit, which will shut the regulator down when the internal temperature exceeds a certain threshold. This integrated circuit also features an enhanced power-on reset circuit. The reset is activated when the power supply voltage rises to within 0.3V of the output voltage. This ensures that the BU28TD2WNVX-TL will not start up until after the power supply has stabilized, reducing the risk of damaging other components in the system.

The BU28TD2WNVX-TL is a highly efficient and reliable linear regulator, ideal for a variety of consumer electronics applications. Its wide input voltage range and adjustable output voltage, combined with its integrated thermal shutdown and enhanced power-on reset circuits, make it an excellent choice for power supply design and power conditioning. The linear regulation technology employed by the BU28TD2WNVX-TL ensures consistent and reliable voltage regulation. It’s suitable for a wide range of consumer, automotive, industrial, and telecom applications.

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