UC2572DTRG4

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UC2572DTRG4 is a high efficiency, adjustable operating current, 37dB ripple rejection and frequency up to 2MHz DC DC switching controller from Texas Instruments. It is designed to provide an efficient, low input/high output, adjustable output voltage solution to wide range of applications including computer peripherals, cellular phones, automotive circuits, hearing aids, monitors, printers and more.

UC2572DTRG4 Application Field

The UC2572DTRG4 is an ideal choice for a variety of applications where high efficiency, low size, and adjustable operating current is required, such as:

• Automotive Circuits (Oil pumps, fuel systems, HVAC, etc.)
• Computer Peripherals (Scanners, printers, hard drives, etc.)
• Cellular Phones (Battery, speakers, motors, etc.)
• Hearing Aids (Microphone amplifiers, etc.)
• Monitors (Display Driver Circuits, etc.)
• Lead acid battery charging

UC2572DTRG4 Working Principle

The UC2572DTRG4 has a wide output current range from 500mA to 1000mA, and is adjustable between 2.0V to 8.5V, with the output voltage defined by an external reference voltage. The IC uses a Start/Stop input for entering into the mode of operation, and the current limit set by the reference voltage remains constant in the Run and Stop modes. The device is also protected from short circuit and overtemperature conditions, with integrated overvoltage protection.

The UC2572DTRG4 integrates a frequency control circuit which maintains a constant frequency from 200 kHz to 2MHz under varying input and output voltage conditions. The small 4-pin SOT-23 package of the IC makes it more suitable for handheld applications, while its optimized internal operating and protected system increases system efficiency.

Conclusion

UC2572DTRG4 is a low input/high output, adjustable output voltage DC DC switching controller designed to offer efficient solutions for a range of applications that require stable voltage and current output. It features 37dB ripple rejection and frequency up to 2MHz, with adjustable operating current ranging from 500mA to 1000mA, and is also protected from short circuit and overtemperature conditions, with integrated overvoltage protection.

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