NCL30082_15 Datasheet, PDF (1/35 Pages) ON Semiconductor – Dimmable Quasi-Resonant Primary Side Current-Mode Primary Side Current-Mode

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
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.
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 supports analog/digital dimming as well as
thermal current fold−back. While the NCL30082 has integrated fixed
overvoltage protection, the designer has the flexibility to program a
lower OVP level.
Features
• 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
• 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
• 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
♦ 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
• These Devices are Pb−Free and Halogen Free/BFR Free
Typical Applications
• Integral LED Bulbs
• LED Power Driver Supplies
• LED Light Engines
www.onsemi.com
8
1
Micro8
DM SUFFIX
CASE 846A
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING DIAGRAMS
8
AAx
AYWG
G
1
AAx = Specific Device Code
x
= C, D or H
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
8
L30082x
ALYW
G
1
L30082x = Specific Device Code
x
= B, B1, B2, B3, D
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
PIN CONNECTIONS
1
SD
ZCD
CS
GND
DIM
VIN
VCC
DRV
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information on page 33 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
January, 2015 − Rev. 5
Publication Order Number:
NCL30082/D