MT7822

MT7822 High Efficiency Buck Constant Current LED Driver DESCRIPTION MT7822 is a high precision LED constant current control chip operating at critical conduction mode (CRM) with zero current switched-on and peak current switched-off. It’s mainly targeted for non-isolated buck LED power systems. Critical conduction mode ensures that the MT7822 turns on the internal power MOSFET when the inductor current reaches zero, reducing the power MOSFET switching loss, and achieving more than 95% efficiency. With critical conduction mode, MT7822 outputs high accuracy LED current, and further achieves excellent line regulation and load regulation. It’s insensitive to inductance and the I-shape inductor can be used. MT7822 is intended for simplified peripheral circuits, low BOM cost application with an internal power MOSFET. MT7822 has wide working voltage range, which is suitable for full-range AC input or 60V - 400V DC input voltage. MT7822 provides various protection features to enhance the ...