MP8670DN-LF

Application Field and Working Principle

The MP8670DN-LF is a high-performance DC-DC step-down switching controller. It is specially designed for mobile communication power supply applications like charging for notebook computers, mobile phones and excellent power supplies for cameras that require lower output voltage and higher current. This product includes more features to optimize system performance such as temperature compensation, current regulation and frequency hopping.

Application Field

The MP8670DN-LF is ideal for applications requiring high levels of current and relatively low-voltage magnitudes. It is best suited for devices and applications in digital, analog and networking systems, as well as for products used in automotive, military and aerospace systems. Typical uses for this type of switching controller are for LED backlighting, lighting and audio controls, system controllers, disk drives, flash memory, and mobile devices.

Working Principle

The MP8670DN-LF is based on a Buck topology, and it allows a wide input voltage range. Its integrated voltage regulator employs a low dropout regulator (LDO) to ensure a good voltage stability. The MP8670DN-LF further utilizes the output current feedback limitation to prevent over-current protection and short circuit protection. The quiescent current of this device is very low, which enables the user to achieve high efficiency power supplies. The dynamic response and ripple can be adjusted to meet different noise requirements.

The MP8670DN-LF also offers built-in adjustability, including adjustable load current and voltage, adjustable input voltage, and adjustable peak current limit. It is capable of operating in four switching frequency ranges from 100KHz to 400KHz. It has a soft-start feature to reduce start-up time and dynamic power consumption, and the output voltage can be monitored by its adjust pin to control the load current.

Conclusion

The MP8670DN-LF is an advanced DC-DC controller with excellent performance in small size. It offers adjustable current and voltage, wide input voltage range, low quiescent current, and temperature compensation. It is suitable for a wide range of applications and can help to optimize system performance. For those looking for a reliable and powerful solution, the MP8670DN-LF is an excellent choice.