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ON Semiconductor - Dimmable Quasi-Resonant Primary Side Current-Mode Controller

Numéro de référence NCL30083A
Description Dimmable Quasi-Resonant Primary Side Current-Mode Controller
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NCL30083A fiche technique
NCL30083
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
with Thermal Fold-back
The NCL30083 is a PWM current mode controller targeting isolated
http://onsemi.com
flyback and nonisolated constant current topologies. The controller
operates in a quasiresonant 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
Micro8
DM SUFFIX
CASE 846A
the design. This device is specifically intended for very compact space
efficient designs. It supports step dimming by monitoring the AC line
MARKING DIAGRAM
and detecting when the line has been toggled onoffon by the user to
8
reduce the light intensity in 5 steps down to 5% dimming.
Features
Quasiresonant Peak Currentmode Control Operation
AAx
AYWG
G
1
Primary Side Sensing (no optocoupler needed)
Wide VCC Range
Source 300 mA/Sink 500 mA Totem Pole Driver with 12 V Gate Clamp
Precise LED Constant Current Regulation ±1% Typical
Line Feedforward for Enhanced Regulation Accuracy
Low LED Current Ripple
AAx = Specific Device Code
x = E or F
A = Assembly Location
Y = Year
W = Work Week
G = PbFree Package
(Note: Microdot may be in either location)
250 mV ±2% Guaranteed Voltage Reference for Current Regulation
~ 0.9 Power Factor with Valley Fill Input Stage
PIN CONNECTIONS
Low Startup Current (13 mA typ.)
5 State Quasilog Dimmable
Thermal Foldback
Programmable softstart
SD
ZCD
CS
GND
1
SS
VIN
VCC
DRV
Wide Temperature Range of 40 to +125°C
(Top View)
Pbfree, Halidefree MSL1 Product
Robust Protection Features
Over Voltage / LED Open Circuit Protection
Over Temperature Protection
Secondary Diode Short Protection
Output Short Circuit Protection
Shorted Current Sense Pin Fault Detection
Latched and Autorecoverable Versions
Brownout
VCC Under Voltage Lockout
Thermal Shutdown
Typical Applications
Integral LED Bulbs
LED Power Driver Supplies
LED Light Engines
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
April, 2013 Rev. 0
1
Publication Order Number:
NCL30083/D

PagesPages 30
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