DESCRIPTION
MT7816B 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 and
PWM/Analog dimmable application.
Critical conduction mode ensures that the
MT7816B turns on the internal switch when the
inductor current reaches zero, reducing the
switch-on switching losses, and achieving more
than 93% efficiency.
With critical conduction mode, and the input
compensation, MT7816B outputs high accuracy
LED current, and further achieves excellent line
regulation and load regulation.
MT7816B has wide working voltage range, which
is suitable for full-range AC input or 12V ~ 500V
DC input voltage. MT7816B provides various
protection features to improve the system
reliability, including over current protection (OCP),
short circuit protection (SCP), adjustable over
voltage protection (OVP) and over temperature
regulation (OTR), etc.

FEATURES
 Internal 500V power MOSFET
 Critical Conduction Mode, insensitive to the
inductance
 PWM/ Analog dimming function
 High efficiency (up to 93%)
 Highly accurate constant LED current
 Cycle-by-cycle current limiting
 LED short circuit protection
 Adjustable LED over voltage protection
 Leading edge blanking technique
 Under-voltage lockout (UVLO) protection
 Over temperature regulation (OTR)
 Available in SOP8 / DIP7package

APPLICATIONS
 LED tube, signal lamp, landscape lamp
 LED stage light, etc
 Intelligent LED lighting application