MT7967 Driver Datasheet

MT7967 Datasheet, PDF, Equivalent


Part Number

MT7967

Description

Dual Winding PSR AC-DC LED Driver

Manufacture

Maxic Technology

Total Page 8 Pages
Datasheet
Download MT7967 Datasheet


MT7967
MT7967
High Accuracy, Dual Winding PSR AC-DC LED Driver
DESCRIPTION
MT7967 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 MT7967 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
MT7967 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
MT7967
3 VCC
4
SW
8
CS
CS 7
2 OVP
DRAIN 6
15
RCS
RSET
GND
DRAIN
NP:NS
LED+
LED-
MT7967 Rev. 1.35
www.maxictech.com
Copyright © 2014 Maxic Technology Corporation
Page 1

MT7967
MT7967
High Accuracy, Dual Winding PSR AC-DC LED Driver
ABSOLUTE MAXIMUM RATINGS
DRAIN
VCC
VCC maximum sink current
OVP, CS
PDMAXMaximum Power
Storage Temperature
Junction Temperature (Tj)
-0.3V to 600V
-0.3V to 40V
5mA
-0.3V to 6V
1.2W
-55°C to 150°C
150°C
Recommended operating conditions
Supply voltage
Operating Temperature (Environment)
8V to 15V
-40°C to 105°C
Thermal resistance
Case to ambient (RθCA)
70°C/W
PIN CONFIGURATIONS
Chip Mark
MT7967
YY WW xxxx
Manufacture code
Week code
Year code
PIN DESCRIPTION
Name Pin No.
GND
1
OVP
2
VCC
SW
DRAIN
CS
3
4
5
6
7
8
Description
Ground
LED open-circuit voltage protection setup. Refer to LED Open Circuit Protection
section.
Power supply
Internal power MOS source
Internal power MOS drain
Current sense input, sense resistor connected between CS and GND
MT7967 Rev. 1.35
www.maxictech.com
Copyright © 2014 Maxic Technology Corporation
Page 2


Features MT7967 High Accuracy, Dual Winding PSR A C-DC LED Driver DESCRIPTION MT7967 is a PWM controller for AC-DC LED lighting . With primary side sensing and regulat ion technology, no secondary side feedb ack circuit is needed. Further, the loo p compensation components are also elim inated while maintaining system stabili ty. Integrated with 600V power switch a nd adjustable LED open-circuit protecti on (OVP) function simplifies the system design and improves the reliablity. Wi th Maxic’s proprietary current regula tion technique, the MT7967 achieves ±3 % accuracy of LED current along with ex cellent line regulation and load regula tion. FEATURES  Build in 600V power MOSFET  No auxiliary winding needed  Supporting 85V to265V AC line volt age range  Primary side sensing and regulation, no need of secondary side f eedback  High precision constant LED current (+/-3%)  Adjustable LED ope n-circuit voltage protection threshold  LED short circuit protection  Cycle-by-cycle peak current control  VDD und.
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