UCC283TDTR-3

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The UCC283TDTR-3 is a wide input voltage range monolithic step-down regulator that provides an accurate output current of 3 A. It is designed for applications such as DC-DC switching converters, point-of-load regulators, and other types of high current regulators. It has a wide input voltage range of 4 V to 60 V and provides a regulated output voltage range of 0.7V - 30V. The device provides excellent load and line regulation and offers high efficiency, low output voltage ripple and low static power consumption.

The UCC283TDTR-3 is a linear step-down regulator that uses a buck- boost topology to efficiently convert a high input voltage to a lower regulated output voltage. The device is capable of working with input voltages exceeding, equal to, or less than the output voltage. The converter consists of an internal FET switch, reference voltage, error amplifier, P-channel MOSFET, N-channel MOSFET and control logic. The switching frequency of the device is controlled by a PWM ramp signal to optimize power efficiency. The synchronous rectifier of the converter provides superior light load efficiency.

The device can be used in a wide variety of applications that require a high current, low voltage regulation such as DC-DC switching converters, point-of-load regulators, voltage positioning systems, motor control systems and other types of high current regulator applications. The device works by switching the internal FET toswitch between two operating modes: continuous current mode and burst mode. In continuous current mode the P-channel MOSFET switches on and off, which maintains the battery voltage with a controlled internal current. When the load demand increases to levels higher than the burst current threshold, the device switches to burst mode. In this mode the N-channel MOSFET starts switching at the switching frequency determined by the PWM Ramp signal, while the P-channel MOSFET remains off. The device provides accurate regulation of the output voltage by monitoring the input and output voltage with its regulation loop.

The UCC283TDTR-3 provides excellent line and load regulation with low ripple over a wide input and output voltage range. The device also offers excellent efficiency with low power consumption. The combination of the high efficiency, low ripple and accurate regulation makes the UCC283TDTR-3 a perfect solution for high current, wide input voltage, and low output voltage linear regulator applications.

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