LNK454DG Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LNK454DG is a Power Management Integrated Circuit (PMIC) specifically designed to drive light emitting diodes (LEDs), incorporated into a 14-pin plastic package. This device provides a cost effective solution for reliable performance with a robust thermal design of the Power Factor Correction (PFC) and LED string current regulating algorithms.

The application field of the LNK454DG PMIC includes industrial and commercial LED lighting systems such as LED down-lighting, indoor and outdoor lighting, LED panel lighting, outdoor LED signage, LED street lighting and LED decorative lighting. This PMIC is suitable for a wide range of LED applications from low power LED bulbs to high power LED lighting that require high power supply.

The working principle of the LNK454DG PMIC starts by rectifying the AC voltage into a DC voltage. Once it is converted, the PMIC then uses a 2-phase boost converter to provide tightly regulated, constant current outputs for driving one or two strings of LEDs. The PMIC is designed to provide a constant voltage source for the LED strings and can drive LEDs with a wide range of forward voltages, independent of input line voltage, LED forward voltage or LED string current; it also offers pulse width modulation (PWM) dimming control which can be accomplished through an external pin.

This PMIC offers several features that enhance the performance of LED lighting systems, such as an adjustable output-low side driver that enables three-way dimming control, over temperature protection and an adjustable start-up current. It also features a 120 degree-C junction rating and is compliant with global SMPS EMI standards. Additionally, it can operate in temperatures up to 70C with minimal audible noise.

The LNK454DG PMIC provides a reliable, cost-effective solution for controlling the brightness and color of LED lighting systems. When combined with an external power factor correction (PFC) boost converter, it reduces overall system cost and complexity, while providing high efficiency and a small form factor for LED lighting systems.

The specific data is subject to PDF, and the above content is for reference