© Semiconductor Components Industries, LLC, 2016
May, 2016 − Rev. 1
1 Publication Order Number:
NCL30186/D
NCL30186
Analog/Digital Dimmable
Power Factor Corrected
Quasi-Resonant Primary
Side Current-Mode
Controller for LED Lighting
The NCL30186 is a controller targeting isolated and non−isolated
“smart−dimmable” constant−current LED drivers. Designed to
support flyback, buck−boost, and SEPIC topologies, its proprietary
current− control algorithm provides near−unity power factor and tightly
regulates a constant LED current from the primary side, thus
eliminating the need for a secondary−side feedback circuitry or an
optocoupler.
Housed in the SOIC10 which has the same body size as a standard
SOIC8, the NCL30186 is specifically intended for very compact
space−efficient designs. The device is highly integrated with a
minimum number of external components. A robust suite of safety
protections is built in to simplify the design. To ensure reliable
operation at elevated temperatures, a user configurable current
foldback circuit is also provided. In addition, it supports analog and
PWM dimming with a dedicated dimming input intended to control
the average LED current.
Pin−to−pin compatible to the NCL30086, the NCL30186 provides
the same benefits with in addition, an increased resolution of the
digital current−control algorithm for a 75% reduction in the LED
current quantization ripple.
Features
• Quasi−resonant Peak Current−mode Control Operation
• Valley Lockout Optimizes Efficiency over the Line/Load Range
• Constant Current Control with Primary Side Feedback
• Tight LED Constant Current Regulation of ±2% Typical
• Power Factor Correction
• Analog or PWM dimming
• Line Feedforward for Enhanced Regulation Accuracy
• Low Start−up Current (10 mA typ.)
• Wide V
cc
Range
• 300 mA / 500 mA Totem Pole Driver with 12 V Gate
Clamp
• Robust Protection Features
♦ Brown−Out Detection
♦ OVP on V
CC
♦
Programmable Over Voltage / LED Open Circuit
Protection
♦ Cycle−by−cycle Peak Current Limit
♦ Winding Short Circuit Protection
♦ Secondary Diode Short Protection
♦ Output Short Circuit Protection
♦ Current Sense (CS) Short Detection
♦ User programmable NTC Based Thermal Foldback
♦ Thermal Shutdown
• −40 to 125°C Operating Junction Temperature
• Pb−Free, Halide−Free Product
• Four Versions: NCL30186A, B, C and D (See Table 1)
Typical Applications
• Integral LED Bulbs
• LED Light Engines
• LED Driver Power Supplies
• Smart LED Lighting Applications
SOIC−10
CASE 751BQ
PIN CONNECTIONS
MARKING DIAGRAM
(Top View)
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
ORDERING INFORMATION
NC
V
CC
DRV
GND
DIM
1
CS
VS
COMP
ZCD
SD
L30186x = Specific Device Code
x = A, B, C, D
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
L30186x
ALYW
G
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