UC1825VTD2

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Part Status:	Active

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UC1825VTD2 Application Field and Working Principle

The UC1825VTD2 is a five-terminal regulator IC designed specifically for voltage regulation in DC to DC converters. This device features high accuracy, fast transient response, and excellent control characteristics. The UC1825VTD2 is ideal for use in a wide variety of DC to DC conversion applications as it can be used as either a Buck (step-down) or Boost (step-up) converter, and operates at greater than 85% efficiency from low to high loads.

Application Field

The UC1825VTD2 is ideal for use in a variety of DC to DC conversion applications, including laptop computer power supplies, cellular phone battery chargers, and portable battery-operated equipment. It provides high efficiency, fast transient response and excellent control characteristics. The UC1825VTD2 can also be used in switch mode power supplies, isolated DC to DC converters, and any other application requiring a five-terminal voltage regulator.

Working Principle and Design Features

The UC1825VTD2 is a five-terminal, on-off control device designed specifically for regulated DC to DC converter applications. The UC1825VTD2 utilizes a pulse-width modulation (PWM) control loop along with an internal pull-up regulator. The PWM control loop regulates the output voltage by modulating the current applied to the output voltage sense resistor. The feedback voltage is compared to the internal reference voltage to close the loop. The UC1825VTD2 features a wide operating range, with a maximum output current of 20mA and an output voltage range of 2V to 45V. The input voltage range is 3.2V to 18V.The UC1825VTD2 includes several features to facilitate the design of high efficiency, high performance DC to DC converters. The UC1825VTD2 features low output voltage ripple, fast transient response, and low switching losses. The UC1825VTD2 also features an internal soft-start circuit and a high noise immunity filter circuit. The filter circuit helps to eliminate any interference that may be caused by the high-frequency switching signal.The UC1825VTD2 is available in a range of packaging options, including surface mount, through-hole and lead frame. The device also includes under/over voltage protection, short-circuit protection, and thermal protection. The UC1825VTD2 is a highly integrated device, making it ideal for use in space-constrained applications.

Conclusion

The UC1825VTD2 is a five-terminal, on-off control device designed specifically for regulated DC to DC converter applications. It features high accuracy, fast transient response, and excellent control characteristics. The UC1825VTD2 is ideal for use in a wide variety of DC to DC conversion applications, including laptop computer power supplies, cellular phone battery chargers, and portable battery-operated equipment. It provides high efficiency, fast transient response and excellent control characteristics. The UC1825VTD2 is available in a range of packaging options and is highly integrated, making it an ideal solution for space-constrained applications.

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