DESCRIPTION
MT7814BD is a high precision LED constant current controller 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 MT7814BD 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, and the input compensation, MT7814BD can achieve precise output current and excellent line regulation and load regulation.
MT7814BD embedded with internal power MOSFET, it can achieve simplified peripheral circuits and low BOM cost.
MT7814BD has wide working voltage range, which is suitable for full-range AC input. MT7814BD provides various protection features to improve the system reliability, including over current protection (OCP), short circuit protection (SCP), adjustable over voltage protection (OVP) and thermal adjustment, etc.

FEATURES
Critical Conduction Mode, insensitive to the inductance.
High efficiency (up to 95%)
Highly accurate constant LED current
Cycle-by-cycle current limiting
LED short circuit protection
Adjustable OVP through external resistor
Leading edge blanking technique
Under-voltage lockout (UVLO) protection
Thermal adjustment
Available in DIP7 package