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LED Driver. MT7930 Datasheet

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LED Driver. MT7930 Datasheet






MT7930 Driver. Datasheet pdf. Equivalent




MT7930 Driver. Datasheet pdf. Equivalent





Part

MT7930

Description

AC-DC LED Driver



Feature


MT7930 Maximizing IC Performance Single Stage, High PFC, AC-DC LED Driver DESC RIPTION MT7930 is a single-stage,prim ary side control AC-DC LED driver with high power factor. With MAXIC patent pe nding technology, the LED current can b e regulated accurately through sensing the primary side information with few e xternal components without the need of an opto-coupler. MT7.
Manufacture

Maxic Technology

Datasheet
Download MT7930 Datasheet


Maxic Technology MT7930

MT7930; 930 integrates power factor correction f unction and works in DCM and constant O FF time mode. A small harmonic current emission (THD) is achieved. MT7930 is a lso implemented with various protection s, such as over-current protection (OCP ), over-voltage protection protection p rotection (SCP) (OTP), etc, (OVP), and to FEATURES Wide input volt age range from AC8.


Maxic Technology MT7930

5V to AC265V Highly accurate constant LE D current (+/-3%) Up to 50W power driva bility. Primary-side current sensing an d regulation without an opto-coupler Le ading edge blanking (LEB) technique Cyc le-by-cycle current limiting Under-volt age lockout (UVLO) protection VDD and o utput over voltage protection Adjustabl e constant current and output power set ting Power on soft.


Maxic Technology MT7930

-start Available in SOP8 package short- circuit over-temperature ensure a reli able system. APPLICATIONS AC/DC LE D driver applications General purpose c onstant current source Signal and decor ative LED lighting E14/E27/PAR30/PAR38/ GU10 LED lamp Typical Application Circ uit MT7930 Rev. 1.30 www.maxictech.co m Copyright © 2011 Maxic Technology Co rporation Page 1 .

Part

MT7930

Description

AC-DC LED Driver



Feature


MT7930 Maximizing IC Performance Single Stage, High PFC, AC-DC LED Driver DESC RIPTION MT7930 is a single-stage,prim ary side control AC-DC LED driver with high power factor. With MAXIC patent pe nding technology, the LED current can b e regulated accurately through sensing the primary side information with few e xternal components without the need of an opto-coupler. MT7.
Manufacture

Maxic Technology

Datasheet
Download MT7930 Datasheet




 MT7930
Maximizing IC Performance
MT7930
Single Stage, High PFC, AC-DC LED Driver
DESCRIPTION
MT7930 is a single-stageprimary 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
Page 1




 MT7930
Maximizing IC Performance
MT7930
Single Stage, High PFC, AC-DC LED Driver
ABSOLUTE MAXIMUM RATINGS
STP, VDD, DRV Voltage
All Other Pins Voltage
Storage Temperature
Junction Temperature (Tj)
-0.3V to 25V
-0.3V to 6V
-55°C to 150°C
150°C
Recommended operating conditions
Supply voltage
Operating Temperature
7.2V to 18V
-40°C to 105°C
Thermal resistance
Case to ambient (RθCA)
128°C/W
PIN CONFIGURATIONS
PIN DESCRIPTION
Name
DRV
GND
TM
COMP
STP
DSEN
Pin No.
1
2
3
4
5
6
VDD
CS
7
8
Description
Gate drive output for power N-MOSFET.
Ground.
Test pin. Always tie to ground.
Internal EAs output. Connect a capacitor to ground for frequency compensation.
Start-up Pin. The MT7930 is softly started through STP Pin.
The voltage feedback from auxiliary winding. Connected to a resistor divider from
auxiliary winding reflecting output voltage.
Power Supply.
Current Sense pin.
MT7930 Rev. 1.30
www.maxictech.com
Copyright © 2011 Maxic Technology Corporation
Page 2




 MT7930
Maximizing IC Performance
MT7930
Single Stage, High PFC, AC-DC LED Driver
ELECTRICAL CHARACTERISTICS
(Test conditions: VDD=12V, TA=25°C unless otherwise stated.)
Symbol Parameter
Conditions
Start-up (STP pin, VDD pin)
ISTART
UVLO
VSTART
Start up Current
Lower Threshold Voltage of VDD
Start-up Voltage
VDD Pin ramp down
VDD Pin ramp up
Supply Current
Iq Quiescent Current
Icc Operating Current
No switching
Fs=70kHz
Control Loop
VFB
VCOMPH
TOFF
SCP
Primary Current Sense Voltage
Upper Limit of COMP
Off Time of DRV
Short Circuit Protection Threshold
at DSEN pin
Over Voltage Protection
OVP1
Threshold at DSEN
Over Voltage Protection
OVP2
Threshold at VDD pin
Current Sense (CS pin)
LEB Leading Edge Blanking of CS
OCP Over Current Protection at CS pin
Thermal Protection
OTP Over temperature protection
Over temperature release
hysteresis
Drive Stage (DRV pin)
TR Rising Time
CL=1nF, DRV Pin Falls
from VDD to 0V
TF Falling Time
CL=1nF, DRV Pin Rises
from 0V to VDD
Note:
Guaranteed by design.
Min
6.0
15.5
392
2.1
10
190
3.04
18.2
Typ
25
7.2
18.5
1.2
3
400
2.2
11
200
3.2
19.2
300
2.2
150
15
50
30
Max
50
8.5
20
408
2.4
12
210
3.36
23.5
2.4
Unit
μA
V
V
mA
mA
mV
V
uS
mV
V
V
nS
V
nS
nS
MT7930 Rev. 1.30
www.maxictech.com
Copyright © 2011 Maxic Technology Corporation
Page 3



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