UC3827DWTR-1G4

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UC3827DWTR-1G4 is a single-channel, current mode, hysteretic, dc-dc switching controller designed with low voltage operation, optimal propagation delay time and temperature characteristics. It is suitable for a wide range of applications, ranging from low-voltage integrator circuits to high-power converter circuits, as well as for industrial and telecommunications applications.

Application Field

UC3827DWTR-1G4 is designed to be used in voltage regulators and dc-dc switching controllers. It provides a high degree of accuracy and dependability, making it suitable for a variety of applications including, but not limited to, regulated DC power supplies, battery charging/discharging/conditioning, digital and adjustable server and desktop power supplies, as well as telecom and other high-frequency applications. This device is also compatible with multiple types of power converters, such as forward, flyback, pulse-width modulated (PWM) buck and boost, and is therefore suitable for a wide range of dc-to-dc switching applications.

Working Principle

UC3827DWTR-1G4 uses a simplified control principle for effectively controlling the switching of a dc-dc converter. The device features an internal comparator and hysteresis which allows for fine-tuning the current sense signal from the converter and guaranteeing reliable operation. By controlling the hysteresis and the comparator, the device ensures that the voltage regulation duty cycle is maintained within a specific range. During operation, the hysteresis threshold of the comparator is adjusted to maintain a certain output voltage across the load, thereby providing an accurate and stable control over the output.

The device also features a programmable current sense amplifier that ensures the controller is able to respond quickly to changes in output voltage. In addition, the high switching frequency of the device allows high power conversion efficiency, which makes it ideal for applications in which low power losses are desired. Additionally, the device also includes under-voltage lockout circuitry to avoid overcharging different types of batteries.

UC3827DWTR-1G4 is an ideal voltage regulator and dc-dc switching controller that enables users to easily and accurately control the voltage of a dc-dc converter. It offers a high degree of accuracy and dependability, making it suitable for a wide range of applications including regulated DC power supplies, battery charging and discharging, digital and adjustable server and desktop power supplies, as well as telecommunications applications.

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