SC4518ISTRT

PMIC - Voltage Regulators - DC DC Switching Regulators

SC4518ISTRT is a type of switching regulator designed to convert DC current from one voltage to another, typically down to a lower voltage while efficiently converting most of the current to the required level. As a switching regulator, the SC4518ISTRT provides a more reliable and efficient alternative to linear regulators. It has a wide range of applications and comes in a variety of package options including surface mount, TO-3 and DIP.

Application Field

The SC4518ISTRT is most commonly used as a DC-to-DC voltage converter in low voltage, high current applications. Its wide range of output voltage and current makes it suitable for a wide range of applications. It can be used for a variety of functionalities such as powering the microprocessor in a laptop or providing a voltage or current supply for mobile communication devices, gaming consoles, TV sets, printers, switches and security systems.

Working Principle

The SC4518ISTRT uses a controlled switch to step down the input voltage. This way, the more efficient switch is used as opposed to a linear regulator, which requires a steady supply to the output, with a large voltage drop over a small current. The switch, usually a MOSFET, is pulse width modulated at a frequency of 400kHz. This PWM control ensures accurate regulation of the output voltage.

The SC4518ISTRT also integrates other features such as protection from over-voltage and over-current, temperature control and over temperature reduce functions. These features make the SC4518ISTRT an ideal solution for low voltage, high current applications.

Conclusion

The SC4518ISTRT is a versatile, high current, low voltage switching regulator suitable for a wide range of applications in portable and embedded products. Its features make it an ideal choice for powering the microprocessor in a laptop or providing an adequate supply of voltage or current for TVs, printers, switches and gaming consoles.