MT7930 查看數據表（PDF） - Unspecified
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MT7930 Datasheet PDF : 8 Pages
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Maximizing IC Performance
MT7930
Single Stage, High PFC, AC-DC LED Driver
DESCRIPTION
MT7930 is a single-stage，primary side control
AC-DC LED driver with high power factor. With
MAXIC patent pending technology, the LED
current can be regulated accurately through
sensing the primary side information with few
external components without the need of an
opto-coupler.
MT7930 integrates power factor correction
function and works in DCM and constant OFF
time mode. A small harmonic current emission
(THD) is achieved.
MT7930 is also implemented with various
protections, such as over-current protection
(OCP), over-voltage protection (OVP),
short-circuit protection (SCP) and
over-temperature protection (OTP), etc, to
ensure a reliable system.
FEATURES
Wide input voltage range from AC85V to
AC265V
Highly accurate constant LED current
(+/-3%)
Up to 50W power drivability.
Primary-side current sensing and regulation
without an opto-coupler
Leading edge blanking (LEB) technique
Cycle-by-cycle current limiting
Under-voltage lockout (UVLO) protection
VDD and output over voltage protection
Adjustable constant current and output
power setting
Power on soft-start
Available in SOP8 package
APPLICATIONS
AC/DC LED driver applications
General purpose constant current source
Signal and decorative LED lighting
E14/E27/PAR30/PAR38/GU10 LED lamp
Typical Application Circuit
MT7930 Rev. 1.30
www.maxictech.com
Copyright © 2011 Maxic Technology Corporation
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