SC189BSKTRT

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The SC189BSKTRT is a DC-DC switching power supply controller developed by Silikron Technologies and is part of the PMIC (Power Management Integrated Circuit) voltage regulators family. It provides an efficient solution for an array of energy related applications.

This regulator is equipped with a single-step synchronous boost conversion technique, and a high-voltage N-channel MOSFET which eliminates the need of an external sensing resistor. The output current is regulated by feeding back some of the output voltage to the PWM controller via a sense resistor or a high-side current sense circuit. This ensures the correct amount of current is drawn from the system.

The regulator features a very low quiescent current and offers a combination of high efficiency and low output ripple. It also has a thermal shutdown (TSD) feature which will automatically duce the duty of the output switch and help protect the circuit from damage due to high temperatures.

The application field of the SC189BSKTRT is quite wide as it can be used in a variety of environments such as automotive, automation, lighting and power plants, Li-ion battery application, etc. It is primarily designed for DC power supply applications and is especially suitable for offline Boost / Beat Step-Up applications.

The working principle of the SC189BSKTRT is quite simple. The input voltage is converted to a high frequency to reduce switching losses, and the high frequency AC signal is rectified and filtered into a DC output. The current sense circuit monitors the output current and adjusts the output voltage accordingly. The input voltage and the output voltage are monitored and sensing circuits are used to adjust the duty cycle of the output switch so that the regulation point can be maintained.

The SC189BSKTRT can operate over a wide range of input voltages, with minimum output ripple and high operating currents. With the built-in current sensing circuit, the power output can be maintained at the desired level without an external current sense resistor. This makes the regulator a very efficient solution for a variety of low voltage applications.

All in all, the SC189BSKTRT DC-DC switching power supply controller is a very efficient and powerful voltage regulator which provides a reliable and cost-effective solution for a wide variety of energy-related applications. It is especially suitable for offline Boost / Beat Step-Up applications, and its combination of low quiescent current, high efficiency and low output ripple make it an ideal choice for many different types of systems.

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