NCL30083 Datasheet, PDF (1/34 Pages) ON Semiconductor – Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting

NCL30083
Product Preview
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
with Thermal Fold-back
http://onsemi.com
The NCL30083 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.
Micro8
DM SUFFIX
CASE 846A
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
MARKING DIAGRAM
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.
8
AAx
AYWG
G
Features
1
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Sensing (no optocoupler needed)
• Wide V_CC Range
• Source 300 mA/Sink 500 mA Totem Pole Driver with 12 V Gate Clamp
• Precise LED Constant Current Regulation ±1% Typical
• Line Feed−forward for Enhanced Regulation Accuracy
AAx = Specific Device Code
x
= E or F
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
• 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 (13 mA typ.)
• 5 State Quasi−log Dimmable
• Thermal Fold−back
• Programmable soft−start
PIN CONNECTIONS
1
SD
ZCD
CS
GND
SS
VIN
VCC
DRV
(Top View)
• Wide Temperature Range of −40 to +125°C
• Pb−free, Halide−free MSL1 Product
• Robust Protection Features
♦ Over Voltage / LED Open Circuit Protection
♦ Over Temperature Protection
Typical Applications
• Integral LED Bulbs
♦ Secondary Diode Short Protection
♦ Output Short Circuit Protection
♦ Shorted Current Sense Pin Fault Detection
• LED Power Driver Supplies
• LED Light Engines
♦ Latched and Auto−recoverable Versions
♦ Brown−out
♦ V_CC Under Voltage Lockout
♦ Thermal Shutdown
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 34 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
February, 2013 − Rev. P2
Publication Order Number:
NCL30083/D