LNK304DN

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

PMIC (Power Management Integrated Circuits) are an important part of modern consumer electronics, providing reliable and efficient energy management solutions for applications from cell phones to tablets and from laptops to home appliances. One of these PMIC solutions is LNK304DN, a low-cost and high-efficiency AC-to-DC offline switcher. This PMIC is well suited for applications such as PC motherboards, industrial control equipment and portable measurement devices.

The LNK304DN integrates several features into one package, including a low-power controller, an input mains supervisor, a high voltage power switch, an opto-coupler, and an auxiliary winding. This configuration allows the LNK304DN to operate as an offline switcher with high efficiency, low power consumption and minimal external components. Furthermore, the LNK304DN has a wide input voltage range of 90-277VAC, making it suitable for use in a variety of AC power sources.

LNK304DN’s working principle is based on an AC-DC low-voltage flyback conversion model. The chip has a high-voltage power switch, which is part of the controller, and also has an opto-coupler and auxiliary winding. When the AC voltage is applied to the chip’s input, it is rectified and filtered to get the DC voltage. The high-voltage power switch then turns the transformer on and off periodically, creating a flyback current that is then converted to DC with the help of the auxiliary winding and the opto-coupler, which together create the feedback loop.

The output of the feedback loop is then compared to the reference voltage to adjust the on-time of the switch. This enables the LNK304DN to provide an output voltage that is regulated, consistent and reliable. The LNK304DN is also capable of providing over-voltage, under-voltage, over-current and over-temperature protection, further increasing its efficiency and reliability.

The LNK304DN is suitable for off-line applications with higher power consumption such as PC motherboards, industrial control equipments, lighting, and portable measurement devices. The chip has low power consumption, high efficiency and low external components, making it an ideal solution for these applications. Furthermore, the wide input voltage range of 90-277VAC makes the LNK304DN suitable for applications in a variety of input power sources.

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