The LM5026MT/NOPB is an Integrated Circuit (IC) component designed by Texas Instruments. It is a highly efficient primary-side regulated Flyback controller, specifically developed for isolated power supplies.
The key feature of LM5026MT/NOPB is its unique primary-side sensing technique, which eliminates the need for an opto-coupler or a third winding on the transformer for feedback regulation. This innovative design simplifies the circuitry and reduces cost while still providing accurate output voltage regulation.
The IC operates in a quasi-resonant mode that reduces switching losses and improves overall efficiency. It is capable of delivering up to 5W of power with low standby power consumption. The LM5026MT/NOPB supports multiple operating modes, including frequency foldback and valley switching, which enhance efficiency at light load conditions.
The integrated high-voltage startup regulator reduces the number of external components required, saving PCB space and simplifying system design. The IC also includes comprehensive protection features like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring the safety and reliability of the power supply.
The LM5026MT/NOPB has a wide operating input voltage range of 9V to 100V, making it suitable for a variety of applications such as industrial control systems, medical equipment, and automotive electronics. It has a fixed frequency operating mode and can operate with high-frequency transformers up to 1 MHz
