UC28025DWRG4

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UC28025DWRG4, produced by TI (Texas Instruments), is a family of 3-terminal, 42V, dual step-down DC DC switching controllers. It is designed for Synchronous Buck applications to help reduce the overall power loss and extend battery life. This family of ICs is capable of driving two outputs with flexible voltage and current ratings, making them suitable for powering various industrial and consumer applications.

UC28025DWRG4 integrates separate enable, power ok, and output enable pins with an adjustable dead time, which enable flexible control and protection features. The electrical parameters and functionality of the family can be tailored to fit a specific application and the power efficiency improved with the same amount of components. This feature saves additional BOM costs.

The device is housed in a small QFN (Quad-Flat No-lead) package and is characterized for up to +125 degree C junction temperature operation. This makes it suitable for applications due to the wide operating temperature requirements. In addition, this family is designed to meet the applicable standards for the protection of electronic devices from the damaging effect of electrical transients.

The working principle of the UC28025DWRG4 is based on a control loop, which provides the switching controller that switches an internal power switch. This power switch is typically connected to an inductor and output capacitor. The loop is fed back to the power switch, which is responsible for delivering the output current and controlling the output voltage. The system automatically adjusts the output voltage according to the set/required voltage. This is done by varying the duty cycle of the power switch, thereby maintaining a stable output voltage.

The controllers are generally used in applications that demand high current such as portable equipment, automotive audio and automotive displays. The family can also be used in other applications such as robotics, factory automation, power supplies and motor control.

In summary, UC28025DWRG4 is a family of 3-terminal, 42V, dual step-down DC DC switching controllers designed for Synchronous Buck applications. This IC integrates separate enable, power ok, and output enable pins with an adjustable dead time, which enable flexible control and protection features. Housed in a small QFN package and capable of driving two outputs with flexible voltage and current ratings, this family of ICs is suitable for powering various industrial and consumer applications.

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