The IR11671ASTRPBF is an IC component designed by Infineon Technologies. It is a buck LED driver with an integrated 600V or 650V power MOSFET. This IC is specifically geared towards offline LED lighting applications, providing a seamless and efficient LED current regulation scheme.
Key features of the IR11671ASTRPBF include:
1. Buck Converter: The IC operates as a buck converter, converting a high input voltage to a lower output voltage required for LED lighting applications.
2. Integrated Power MOSFET: The IR11671ASTRPBF incorporates a built-in high-voltage power MOSFET, which eliminates the need for an external discrete device, saving board space and reducing overall system costs.
3. High Efficiency: The IC offers excellent power conversion efficiency, ensuring minimal power losses and optimal use of energy.
4. Quasi-Resonant Control: It employs quasi-resonant control, which ensures high-frequency operation, reducing electromagnetic interference (EMI) noise and meeting global EMI standards.
5. Programmable Output Current: The output current can be programmed through an external resistor or via a dedicated DIM pin, enabling precise control of the LED brightness.
6. Versatile Protection Features: The IC incorporates various protection mechanisms, including over-voltage protection, cycle-by-cycle over-current protection, and over-temperature protection, ensuring safe and reliable operation even under fault conditions
