NCL30082_13 Datasheet, PDF (1/33 Pages) ON Semiconductor – Dimmable Quasi-Resonant Primary Side Current-ModeController for LED Lighting with Thermal Fold-back

NCL30082
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
with Thermal Fold-back
The NCL30082 is a PWM current mode controller targeting isolated
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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
The device is highly integrated with a minimum number of external
CASE 846A
components. A robust suite of safety protection is built in to simplify
the design. This device supports analog/digital dimming as well as
thermal current fold−back. While the NCL30082 has integrated fixed
MARKING DIAGRAM
overvoltage protection, the designer has the flexibility to program a
8
lower OVP level.
AAx
Features
• Quasi−resonant Peak Current−mode Control Operation
AYWG
G
1
• 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
= C or D
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.)
• Analog or Digital Dimming
• Thermal Fold−back
PIN CONNECTIONS
1
SD
ZCD
CS
GND
DIM
VIN
VCC
DRV
• Wide Temperature Range of −40 to +125°C
(Top View)
• 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
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 32 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
April, 2013 − Rev. 0
Publication Order Number:
NCL30082/D