LNK417EG

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The LNK417EG ic is a product belonging to Power Integrations “LinkSwitch” family of LED drivers. This LED driver offers high efficiency and superior thermal performance with its primary function being to provide a constant current source for driving LEDs.

Application Field

The LNK417EG is a perfect solution for LED drivers in commercial, industrial, and lighting applications. The device is perfect for applications such as ceiling light fixtures, floodlights, wall packs, down lights, and other types of LED driven lighting products. It can also be used in smart building controls, home appliances, and even automotive lighting.

Working principle

The LNK417EG works by sensing the voltage applied to the LEDs. The IC will then modulate the voltage applied to the LEDs to maintain a constant current. This ensures that the proper amount of current is being supplied to the LEDs at all times to maintain a consistent light output. The device is capable of dimming its output in many applications, such as when paired with a dimmer switch.

The LNK417EG employs a constant-current control method with a hysteretic peak current control. This ensures that the current within the LED strings remains in a permissible range by monitoring the LED voltage. When the LED load varies, a feedback control loop will be activated which will cause the LED driver to increase or reduce the LED current accordingly. This allows for efficient control of LED brightness and improved LED lifetime.

The LNK417EG can operate on an input voltage range of 100V to 277VAC and is capable of providing a maximum output current of up to 350mA. It also features an integrated EMI filter which is tuned to significantly reduce conducted EMI emission compared to a standard full-bridge rectifier circuit. This makes it ideal for use in applications that require compliance to stringent global EMI standards.

Conclusion

In conclusion, the LNK417EG ic is a high efficiency, thermal robust LED driver suitable for a variety of commercial, industrial, and residential applications. With its constant current control method and hysteretic peak current control capability, this device is perfect for applications that require dimming and efficient control of LED brightness. Additionally, its integrated EMI filter makes it perfect for applications where compliance to stringent EMI standards is required.

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