UCC2803QDRQ1 Integrated Circuits (ICs)

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The UCC2803QDRQ1 is a wide voltage range, high efficiency, low ripple, non-synchronous Buck switching controller. It is designed for DC/DC boost, buck, and inverting applications from 12 Vin to 48 Vin. The device operates over a frequency range from 100 kHz to 650 kHz, so it can be optimized for given application constraints.

The UCC2803QDRQ1 is a DC-DC switching controller, which can be used in both solenoid driven and brushless DC motor applications. It is specifically designed for use with either buck or boost converters. It offers very low output voltage ripple and noise, along with high efficiency. The device can be optimized to a wide range of frequencies which makes it suitable for a variety of applications ranging from low power to high current.

The UCC2803QDRQ1 is designed for use in a buck converter configuration. In such a configuration, it operates in the continuous conduction mode (CCM) reducing the need for an external compensation. The internal synchronous rectifier (SR) eliminates the need for an external especially dedicated to synchronous rectification. The UCC2803QDRQ1 also features a built-in soft-start, which enables a simpler circuit design and reduces the start-up time.

The device works on the principle of voltage regulation. When the output voltage reaches the predetermined regulation voltage level, the integrated driver block turns off the switch, stopping the modulation action and allowing the output voltage to remain constant. This helps the device to maintain the output voltage within a certain range. At the same time, the driver block turns on the switch, allowing the inductor current to return to zero. This reduces the switching losses and increases the efficiency of the converter.

The UCC2803QDRQ1 has various other features like the input current limit and undervoltage lockout, which protect the converter from high input current and low input voltage conditions. It also features an overvoltage protection, which allows the device to detect when the output voltage exceeds the limits and turn off the switch to prevent further damage. The device also helps in improving the EMI/EMC characteristics by suppressing the high frequency noise.

The UCC2803QDRQ1 is a great choice for a variety of applications including power adaptors, power supplies, automotive applications, battery chargers, industrial and medical applications, and general-purpose DC/DC converters. Its small form factor and high efficiency make it an ideal choice for many applications, and its integrated features make it easy to implement in a variety of applications.

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