UC2834Q

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UC2834Q is a linear regulator controller. It is a member of the UC28xx family of voltage regulator controllers which are designed specifically for application in positive linear regulator designs. Typical applications of UC2834Q include batteries, computer peripheral power supply, servo controllers, circuit power supply, and power supplies for automotive applications.

The UC2834Q is a highly integrated and cost-effective linear regulator. Its design incorporates a high-voltage PMOS/NPN/control transistor combination and an input voltage regulator to provide the necessary on-chip bias voltages, along with advanced power-saving techniques that reduce the total power consumption of the system. As with other members of the UC28xx family, the UC2834Q has an operating temperature range of –40°C to 125°C making it suitable for harsh environments.

The UC2834Q is designed to operate as a 5V linear regulator, providing a regulated 5V output voltage from a 6V to 16V input voltage. It has a wide range of features that allow the device to be used in a variety of applications. The most important features of the UC2834Q include an adjustable minimum off-time and a temperature-compensated current limit. The adjustable minimum off-time allows the current limit setting to be adjusted to prevent excessive power dissipation in the regulator output stage. The temperature compensation feature ensures that the current limit setting remains constant as the temperature of the system increases.

In addition to these features, the UC2834Q has several other features that make it highly desirable for use in voltage regulation applications. It includes over-temperature and over-current protection, a power-down mode, a precision reference voltage for improved regulation accuracy, and a low-current standby mode.

The UC2834Q controller is connected to the external components needed to implement a linear voltage regulator. This includes an N-channel MOSFET pass element, a power transistor, and a set of external current-sense resistors. The UC2834Q also requires a decoupling capacitor and an external power supply to provide power to the IC during normal operation.

The UC2834Q operates via an internal control loop that uses the voltage across the current-sense resistors to adjust the output voltage to the desired set-point. As the input voltage and output voltage vary, the current-sense feedback loop automatically compensates for the changes and maintains the output voltage within a tightly regulated range. In addition, the UC2834Q also incorporates several protection features such as short-circuit protection, over-current protection, and over-temperature protection.

The UC2834Q is designed to provide a wide range of features and capabilities to ensure the linear voltage regulator operates with maximum efficiency and reliability. Its wide operating voltage range and temperature compensation features make it suitable for a wide range of applications, while its advanced power-saving techniques and precision regulation accuracy enable it to deliver reliable performance.

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