On Semiconductor NCL30081 Evaluation Board NCL30081LEDGEVB NCL30081LEDGEVB Data Sheet
Product codes
NCL30081LEDGEVB
© Semiconductor Components Industries, LLC, 2013
April, 2013 − Rev. 0
1
Publication Order Number:
NCL30081/D
NCL30081
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
Primary Side Current-Mode
Controller for LED Lighting
The NCL30081 is a PWM current mode controller targeting isolated
flyback and non−isolated constant current topologies. The controller
operates in a quasi−resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to precisely regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, biasing and an optocoupler.
operates in a quasi−resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to precisely regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, biasing and an optocoupler.
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design. This device is specifically intended for very compact space
efficient designs. It supports step dimming by monitoring the AC line
and detecting when the line has been toggled on−off−on by the user to
reduce the light intensity in 5 steps down to 5% dimming.
the design. This device is specifically intended for very compact space
efficient designs. It supports step dimming by monitoring the AC line
and detecting when the line has been toggled on−off−on by the user to
reduce the light intensity in 5 steps down to 5% dimming.
Features
•
Quasi−resonant Peak Current−mode Control Operation
•
Primary Side Sensing (no optocoupler needed)
•
Wide V
CC
Range
•
Precise LED Constant Current Regulation
±1% Typical
•
Line Feed−forward for Enhanced Regulation Accuracy
•
Low LED Current Ripple
•
250 mV
±2% Guaranteed Voltage Reference for Current Regulation
•
~ 0.9 Power Factor with Valley Fill Input Stage
•
Low Start−up Current (10
mA typ.)
•
Small Space Saving Low Profile Package
•
5 State Quasi−log Dimmable
•
Wide Temperature Range of −40 to +125
°C
•
Pb−free, Halide−free MSL1 Product
•
Robust Protection Features
♦
Over Voltage / LED Open Circuit Protection
♦
Secondary Diode Short Protection
♦
Output Short Circuit Protection
♦
Shorted Current Sense Pin Fault Detection
♦
Latched and Auto−recoverable Versions
♦
Brown−out
♦
V
CC
Under Voltage Lockout
♦
Thermal Shutdown
Typical Applications
•
Integral LED Bulbs
•
LED Power Driver Supplies
•
LED Light Engines
http://onsemi.com
PIN CONNECTIONS
See detailed ordering and shipping information in the package
dimensions section on page 30 of this data sheet.
dimensions section on page 30 of this data sheet.
ORDERING INFORMATION
TSOP−6
SN SUFFIX
CASE 318G
MARKING DIAGRAM
VIN
VCC
DRV
ZCD
GND
CS
(Top View)
1
1
AAx = Specific Device Code
x
x
= G or H
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb−Free Package
AAxAYWG
G
1
(Note: Microdot may be in either location)