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Maxic Technology - High Accuracy Dual Winding PSR AC-DC LED Driver

Numéro de référence MT7968
Description High Accuracy Dual Winding PSR AC-DC LED Driver
Fabricant Maxic Technology 
Logo Maxic Technology 





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MT7968 fiche technique
MT7968
High Accuracy, Dual Winding PSR AC-DC LED Driver
DESCRIPTION
MT7968 is a PWM controller for AC-DC LED
lighting. With primary side sensing and
regulation technology, no secondary side
feedback circuit is needed. Further, the loop
compensation components are also eliminated
while maintaining system stability. Integrated
with 600V power switch and adjustable LED
open-circuit protection (OVP) function simplifies
the system design and improves the reliablity.
With Maxic’s proprietary current regulation
technique, the MT7968 achieves ±3% accuracy
of LED current along with excellent line
regulation and load regulation.
FEATURES
Build in 600V power MOSFET
No auxiliary winding needed
Supporting 85V to265V AC line voltage
range
Primary side sensing and regulation, no
need of secondary side feedback
High precision constant LED current (+/-3%)
Adjustable LED open-circuit voltage
protection threshold
LED short circuit protection
Cycle-by-cycle peak current control
VDD under voltage lock-out protection
Over temperature protection
Available in DIP8 package
MT7968 provides plenty of protections, such as
over current protection(OCP), short circuit
protection (SCP)over voltage protection (OVP)
and over temperature protection(OTP),etc, to
enhance system reliability.
APPLICATION
LED bulb, Spotlight
LED lighting application
General purpose constant current source
Typical Application Circuit
Vin_ac
MT7968
3 VCC
4
SW
8
CS
CS 7
2 OVP
DRAIN 6
15
RCS
RSET
GND
DRAIN
NP:NS
LED+
LED-
MT7968 Rev. 1.35
www.maxictech.com
Copyright © 2014 Maxic Technology Corporation
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