UCC28C43DR Integrated Circuits (ICs)

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The UC28C43DR is a DC DC switching controller IC of the PMIC – Voltage Regulators – DC DC Switching Controllers family. It offers a wide current range with lower on-state resistance. This integrated circuit is housed in an SO-8 package, and is designed for non-isolated synchronous buck topology with multiple input configurations. The device is equipped with one of the fastest switching speeds for DC-DC switching applications, with a fast transient response time.

UC28C43DR is a current mode controller with its internal current loop controller and an external PWM comparator. It includes an oscillator and sub-systems to make this device easier to use. It has a real-time steady-state operating temperature monitor and an adjustable soft-start limit feature. This device is designed with an on-board reset circuit, over-current protection, cycle by cycle current limiting, temp limit, voltage limiting and other advanced features.

The UC28C43DR device is suitable for many applications such as DC-DC converters and switching power supplies. It has excellent efficiency, high reliability and a wide input voltage range (6V to 40V). It offers superior protection from short circuit, peak current, over-voltage, temperature, and under-voltage. The wide-body SOIC package allows for low levels of inductive loop area and reduces EMI.

The typical applications for this device include power supplies for laptop adapters, industrial computing systems, peripheral computer power, networking and telecommunication systems, and in automotive and battery powered systems. It can be used as a primary controller or a secondary adjustable voltage output regulator.

The working principle of the UC28C43DR is simple and quite straightforward. This device makes use of an on-board oscillator to create a duty cycle signal which is used by the external PWM comparator. The duty signal is then passed to the current mode comparator, and the integrated current loop controller adjusts the duty cycle based on the output voltage. This is a fast switching method which is used to ensure that the output voltage remains stable.

The device is designed with several protections such as the on-board reset circuit, the over-current and peak current limit, the temperature limit, the voltage limit and so on. All of these protections make the device a very robust and stable DC-DC switching controller. Furthermore, the device also has a wide input voltage range and a wide operational temperature range (– 40°C to 125°C), making it suitable for use in a variety of industrial and commercial applications.

In summary, the UC28C43DR is a very efficient, robust and stable DC-DC switching controller IC of the PMIC – Voltage Regulators – DC DC Switching Controllers family. It offers superior protection from current, over-voltage, temperature and other faults. The device is suitable for many applications and can be used as a primary controller or secondary adjustable voltage output regulator. With its excellent efficiency, wide input voltage range and fast switching speeds, this device is suitable for a wide range of applications.

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