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M8916 is a high-precision non-isolated step-down LED constant current control chip with active power factor correction. M8916 integrates active power factor correction circuit , can achieve very high power factor and very low total harmonic distortion. Because it works in the critical continuous mode of the inductor current, the power MOS tube is in a zero-current turn-on state, the switching loss is reduced, and the utilization rate of the inductor is also high. M8916 integrates a 500V power MOSFET internally and requires only a few peripheral devices to achieve excellent constant current characteristics. M8916 adopts a patented floating structure to sample the inductor current throughout the cycle, achieving high-precision output constant current control, and Achieve excellent line voltage regulation and load regulation. In addition, the M8916 has an overheating adjustment function that reduces the output current when the driving power supply overheats to improve system reliability.
Features:
■Built-in active power factor correction,
■Inductor current critical continuous mode
■High performance line voltage Regulation and load regulation
■±3% output current accuracy
■Built-in 500V power
■Start-up current
■Up to 95% system efficiency
■Ultra-low starting current
■Multiple protection functions
Open circuit/short circuit protection
Open circuit of current sampling resistor Protection
Cycle-by-cycle primary current limiting
Chip power supply overvoltage/undervoltage protection
Auto-restart function
Overheating adjustment function
■Adopt SOP-8 package
Application:
■GU10/E27 LED bulb, spotlight
■LED PAR Lamp
■LED Fluorescent Lamp
■Others