NCP5623BMUTBG Integrated Circuits (ICs)

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Power Management Integrated Circuits (PMIC) form the backbone of many consumer and industrial electronics. The NCP5623BMUTBG is a 3-channel, low-side, boost/SEPIC LED Driver from ON Semiconductor, ideal for controlling the current in three separate LED strings. This article will examine the application field and working principle of the NCP5623BMUTBG.

Application Field

The NCP5623BMUTBG is a configurable LED driver with three control modes: peak current mode control (PCMC), voltage regulation mode (VRM) and DCDC boost/SEPIC LED regulator mode. It supports up to 18V of input voltage and is suitable for operation from a wide range of input sources. The power-saving feature includes a stand-by mode that enables the device to minimize its power consumption when not in use. As a low-side LED driver, the NCP5623BMUTBG is ideal for applications such as LCD/OLED backlighting, illumination and solid-state street/area lighting.

Working Principle

The working principle of the NCP5623BMUTBG is based on its use of current mirror (CM) technology, a circuitry in which the current in one transistor is made to match the current in another transistor, thus allowing two or more outputs to be adjusted together. This allows for precise current regulation, which is essential in many LED lighting applications. The NCP5623BMUTBG also uses a charge pump voltage-feedback technique to optimize light intensity or drive constant current. This allows it to reduce power consumption while still providing the desired amount of light.

The NCP5623BMUTBG is also equipped with a thermal warning and shutdown protection feature, which helps to protect the device from damage due to excessive temperatures. In addition, it has a wide junction temperature operating range of -40°C to 125°C. The NCP5623BMUTBG also boasts a robust underlying hardware architecture which provides high PSR ratings, as well as a high degree of EMI immunity.

Conclusion

The NCP5623BMUTBG is a power-efficient and feature-rich low-side LED driver from ON Semiconductor, specifically designed to meet the needs of LED lighting applications. Its key features include the utilization of current mirror (CM) technology, voltage feedback techniques, thermal warning/shutdown protection and a wide operating temperature range. All of these features make the NCP5623BMUTBG a reliable and cost-effective solution for controlling LED lighting systems.

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