SC4505MLTRT

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The SC4505MLTRT is a DC/DC switching regulator specifically designed for high efficiency DC/DC voltage conversion. Its primary applications range from low input voltage to negative output voltage conversion. The regulator’s tolerant operating range is from 2.8V to 18V input with no minimum load and output voltage range from -3.3V to 18V with ±5% accuracy. With a low input current (IIN) of 0.5A, high efficiency (hFE) up to 95%, low output ripple and high switching frequency (fOSC) of 625kHz, the SC4505MLTRT is the ideal must have DC/DC power supply solutions for applications such as mobile, communications and computing.

SC4505MLTRT application field and working principle

The SC4505MLTRT DC/DC switching regulators can be used to support a wide range of power requirements in applications such as mobile, communication and computing. As the terminology implies, a DC-DC converter uses electric signals to convert a DC power supply into a different DC output. This DC-DC converter is used for multiple applications including voltage conversion, voltage regulation, power conversion, and power factor correction.

In the case of the SC4505MLTRT, however, it is the accurate regulation and precise control of output voltage which makes this DC/DC regulator attractive for applications. With an accuracy rated up to ±5%, it delivers a steady, precise output voltage with excellent low ripple, making it ideal for motion control, industrial and automotive applications as well as for digital systems, portable devices, notebooks and PCs.

The working principle of the SC4505MLTRT DC/DC converter relies on a series of switching operations that are controlled by a closed-loop feedback system. The fundamental components of the system are a high frequency switch, a rectifier, and a voltage regulator. The high frequency switching function of the converter is achieved by using a gate driver and a MOSFET chip to drive a low frequency oscillator. The rectifier converts the AC voltage into a DC voltage while the voltage regulation circuit maintains a stable voltage at the output even with changing conditions at the input.

As the input voltage increases or decreases, the circuit adjusts the duty cycle of the low frequency oscillator to match the input voltage. This ensures that the output of the regulator remains constant. Output ripple is also reduced since the low frequency oscillator allows for faster dynamic response. In addition, the SC4505MLTRT DC/DC converter is equipped with various protection features such as, over current, over voltage, and short circuit protection, which ensure that the load is safeguarded against any changes in the input voltage.

In summary, the SC4505MLTRT DC/DC converter is a high-performance, high-efficiency, and long-lasting regulator, designed to meet the power requirements of many different applications. Its features and performance characteristics make it the ideal power supply solution for applications that require precise voltage regulation and efficient power conversion. Its wide input voltage, low ripple, and high efficiency make it a must-have solution for mobile, communication and computing applications.

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