UCC25630-1DDBT Integrated Circuits (ICs)

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DC-DC switching regulated controllers, such as the UCC25630-1DDBT, are used in applications requiring step-up and step-down voltage conversion. They are essentially a type of power supply that provide a predetermined and regulated output voltage, independent of the input voltage. Utilizing an internal switching voltage regulator, the DC-DC switching regulated controllers allow for power conservation, high-reliability, and improved electrical performance in end-user applications.

The UCC25630-1DDBT, manufactured by Texas Instruments, is an integrated single-channel synchronous buck switching regulated controller. It functions by converting the supplied input voltage from the power source into a stable output voltage by the use of a switched dc-dc converter. The controller increases supply accuracy and thermal efficiency by automatically regulating its output voltage to within a specified amount.

The UCC25630-1DDBT works by using a controlled current feedback loop and an internal clock oscillator to control its switching regulator configuration. It has two synchronous gate drivers operating at a fixed frequency of 1.36 MHz. The synchronous gate drivers control two internal switches, which alternate between open and closed states to control the output voltage. The current feedback loop compares the output current to the desired external programmed current, adjusting the output voltage to match the specified amount. The UCC25630-1DDBT uses an adjustable ramp voltage to control the rate of change in the output voltage.

The UCC25630-1DDBT has both current limit and short-circuit protection features. It is designed for use with external n-channel MOSFETs, allowing for operation at a wide range of output voltages from 1.5V to 5.5V and operating frequencies from 200kHz to 1.8MHz. The device also includes programmable soft start, making it ideal for applications requiring a soft start up without causing an inrush of current.

The UCC25630-1DDBT is specifically designed for applications with low input voltages and is capable of stepping up or stepping down a supply voltage by achieving a ratio of 0.5 to 5.25. It features input and output over-voltage protection, thermal shutdown, and under-voltage lockout. Its wide input voltage range allows it to be used in a variety of applications ranging from mobile computing and battery-powered instrumentation to integrated circuits, smart meters, and general-purpose power supplies.

The UCC25630-1DDBT is a highly efficient DC-DC switching regulated controller with low ripple and high accuracy output voltage regulation. It is designed for applications that require low input voltages and high levels of accuracy. It operates at fixed internal frequencies of 1.36 MHz and is versatile enough to accept a wide array of inputs while still providing a stable output voltage.

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