PMIC - LED Drivers

A LED Driver is an electronic device that modulates current across a LED or array of LEDs, powering them for various lighting applications. The TB62777FNG EL LED Driver is a high-efficiency, high-voltage linear LED Driver from Toshiba. This family of Drivers provides accurate current regulation with low energy consumption, allowing for high quality lighting performance.

Application Field

The TB62777FNG EL LED Driver integrates variable frequency oscillator, thermistor, PWM dimming and off-time control into one package for total control of the LED. It is suitable for use in medium to high current lighting applications such as automotive, industrial, and consumer lighting.

Working Principle

The TB62777FNG EL LED Driver is designed to boost the voltage of an AC mains input and use a high frequency, fixed frequency oscillator to regulate the current in the LEDs. The Driver regulates the peak current, as well as pulse width modulation (PWM) of the current, which allows for dimming functionality. The frequency of the oscillator is also adjustable, allowing for further customisation of brightness and dimming characteristics.

In addition, the TB62777FNG EL LED Driver also integrates a thermistor for over temperature protection, which ensures the LEDs and the surrounding components are not damaged if the operating temperature exceeds safe levels.

Conclusion

The TB62777FNG EL LED Driver from Toshiba is an high-efficiency and high-voltage LED Driver suitable for medium to high current LED lighting applications. It provides accurate and consistent current regulation and low-power consumption, enabling high-quality lighting performance.The integrated variable frequency oscillator, thermistor and PWM dimming and off-time control ensure that the LED lighting system is customised to the user requirements.