UC3825QTR

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The UC3825QTR is a high performance current mode Pulse Width Modulation (PWM) controller from the UC3825 family. This device is designed to provide a cost effective, low profile, and power efficient solution for semiconductor system applications. Its unique features and excellent performance make the UC3825QTR an ideal choice for regulators, switch mode power supplies, and variable speed fan control applications. The device is available in QFN package, providing low EMI and a low profile that helps to reduce the complexity of design and mass of product.The UC3825QTR is used in a wide range of applications and is an ideal choice for DC-DC switching controllers. It is primarily used in two types of applications, Constant Voltage (CV) and Constant Current (CC) applications. In CV applications, the UC3825QTR can be used to maintain a constant output voltage regardless of load and input voltage fluctuations. In CC applications, it can be used to maintain a constant current regardless of output voltage and load changes. It features current mode control, which gives it a fast response time, minimal noise, and excellent output stability.

The UC3825QTR is designed to operate in either fixed frequency operation or burst mode operation. In fixed frequency operation, the output voltage will be within a specified tolerance even at light load conditions, thus providing good efficiency and no output voltage ripple due to low ESR of the output capacitor. In burst mode operation, the device will reduce its switching frequency as the load current decreases in order to improve efficiency and reduce power dissipation. The device is equipped with an internal compensation network that can be used to optimize its performance for a given application. It also includes protection circuitry to protect against overvoltage, overcurrent, and short-circuit conditions.

The UC3825QTR is capable of operating from both 5V and 3.3V power supply rails and supports a wide range of output voltage requirements. It can be configured to supply up to 2A of output current. The device features a power good indicator, an enable control output, an oscillator synchronization input pin, and a soft start control pin. All of these features make it ideal for use in DC-DC switching applications.

In summary, the UC3825QTR is an excellent choice for DC-DC switching controllers, constant voltage and constant current applications. It features current mode control, which provides fast response, minimal noise and excellent output stability. It is available in a low power, low profile QFN package, making it ideal for applications where space is at a premium. It is equipped with protection circuitry to protect against overvoltage and overcurrent conditions and offers a wide range of output voltage requirements and current capability. The UC3825QTR’s unique features and excellent performance make it a popular choice for projects that require DC-DC switching and voltage regulation.

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