© Semiconductor Components Industries, LLC, 2016
March, 2016 − Rev. 0
1 Publication Order Number:
NCL30188/D
NCL30188
Power Factor Corrected
Quasi-Resonant Primary
Side Current-Mode
Controller for LED Lighting
with Thermal Foldback
The NCL30188 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 SOIC8, the NCL30188 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
operations at elevated temperatures, a user configurable current
foldback circuit is also provided.
Pin−to−pin compatible to the NCL30088, the NCL30188 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
• Constant Current Control with Primary Side Feedback
• Tight LED Constant Current Regulation of ±2% Typical
• Power Factor Correction
• Line Feedforward for Enhanced Regulation Accuracy
• Low Start−up Current (13 mA typ.)
• Wide V
cc
Range
• 300 mA / 500 mA Totem Pole Driver with 12 V Gate Clamp
• Robust Protection Features
♦ 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
♦ Shorted Current Sense Protection
♦ User Programmable NTC Based Thermal Foldback
♦ Thermal Shutdown
♦ V
cc
Undervoltage Lockout
♦ Brown−out Protection
• Pb−Free, Halide−Free Product
• Latching−off (NCL30188A) or 4−s Auto−recovery
(NCL30188B) Protection Modes (See Table 4)
Typical Applications
• Integral LED Bulbs and Tubes
• LED Light Engines
• LED Drivers/Power Supplies
• Electronic Control Gear for LED Lighting
www.onsemi.com
SOIC−8 NB
CASE 751
PIN CONNECTIONS
MARKING DIAGRAM
(Top View)
L30188x = Specific Device Code
x = A, B
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
ORDERING INFORMATION
V
CC
DRV
GND
1
CS
VS
COMP
ZCD
SD
1
8
L30188x
ALYW
G
1
8
