LNK6769E

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The LNK6769E is a single-channel, online flyback LED driver with a high power factor. It combines Linear Regulator Technology (LRT) and interleaved PWM Control to create a highly efficient, low-noise AC/DC offline LED driver. It offers power factor correction (PFC), constant power over dimming, and electromagnetic interference (EMI) filtering. It is ideal for general dimming and color-temperature adjustment applications.

The LNK6769E is a flexible LED driver with a wide range of voltage and frequency inputs, a wide operating temperature range, and high-power efficiency, providing solutions for LED lighting solutions ranging from residential to commercial.

Application Fields

The LNK6769E is suitable for applications such as street lamps, garden lights, and wall washers, providing robust solutions for a wide range of LED-based lighting solutions.

Working Principle

The LNK6769E\'s high-efficiency interleaved PWM control uses a two-stage conversion process for single-stage power transfer. The first stage contains a voltage-mode control loop and provides PFC that reduces peak current during startup. The voltage-mode control loop uses a peak-current-mode (PCM) control of an auxiliary rectifier or buck converter to provide feedback and regulation, resulting in a high efficiency at light loads.

The LNK6769E offers a wide adjustable EC/DC dimming output range of 0 to 100%. The dimming output is regulated by an internal voltage-mode feedback loop and supports a wide range of dimming command signals including PWM dimming, Resistive Potentiometer dimming, and 0-10V dimming.

The LNK6769E uses high-frequency operation to reduce filter size and minimize electromagnetic interference (EMI). It contains built-in protection circuitry to protect against open circuit, short circuit, over load, over voltage, and over temperature faults. The protection circuit has a response time of 2 ms, shutting down the supply during fault conditions.

Conclusion

The LNK6769E is a highly efficient single-channel LED driver with high power factor, wide voltage and frequency inputs, wide operating temperature range, and many useful features such as PFC and EMI filter. It is well suited for applications such as street lamps, garden lights, and wall washers. The LNK6769E is a cost-effective and robust solution for LED lighting solutions ranging from residential to commercial.

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