LNK302GN

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 LNK302GN is a member of Linear Technology’s family of offline and switching power supply controllers. This a popular choice for applications such as LED lighting, consumer electronics, portable device chargers, and low-powered motor drives. It drives an external power MOSFET to regulate an isolated DC output voltage with an output power up to 10W.

This IC consists of an oscillator, system control, power supply controller, power MOSFET driver, and MOSFET and sensing protections. It also offers many features including overload protections, UVLO and other trip points, and accurate temperature monitoring and control. In addition, the frequency of the IC’s switching action can be adjusted for resonance modes and for frequency-dependent efficiency.

One of the main benefits of the LNK302GN is its high efficiency, low power dissipation, and low output voltage ripple. Its output voltage is adjustable from 1.2 V to 15 V with a +/-5% accuracy, and it is able to regulate the output voltage over input voltage and load changes. Furthermore, it includes built-in UVLO and OVP/OCP protection and system status that can be monitored via its dedicated pin. In addition, it is also able to provide constant current, dimming if necessary, and accurate power monitoring.

The LNK302GN’s working principle is to utilize its oscillator in the start mode, to control the buck converter at a fix-duty cycle and frequency. Thus the voltage across the power MOSFET (Vgs) is controlled to generate the output voltage. It can also regulate the output voltage by utilizing its voltage reference, error amplifier and its comparator, when necessary. It also uses an adaptive chopping/skip mode to regulate the Vgs and power MOSFET to ensure the desired output voltage is maintained during light load conditions.

In conclusion, the LNK302GN is an ideal converter for applications such as LED lighting and consumer electronics that require an isolated DC output with an output power up to 10W. It offers high efficiency, low power dissipation, and low output voltage ripple. Its features include overload protections, UVLO and other trip points, and accurate temperature monitoring and control. With its operating frequency that can be adjusted for resonance modes and for frequency-dependent efficiency, the LNK302GN is a reliable and cost effective solution for power supply design.

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