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 www.onsemi.com flyback and nonisolated constant current topologies. The controller operates in a quasiresonant mode to provide high efficiency. Thanks 8 8 to a novel control method, the device is able to precisely regulate a 1 1 constant LED current from the primary side. This removes the need Micro8 SOIC8 for secondary side feedback circuitry, biasing and an optocoupler. DM SUFFIX D SUFFIX The device is highly integrated with a minimum number of external CASE 846A CASE 751 components. A robust suite of safety protection is built in to simplify the design. This device supports analog/digital dimming as well as MARKING DIAGRAMS thermal current foldback. While the NCL30082 has integrated fixed overvoltage protection, the designer has the flexibility to program a 8 lower OVP level. AAx Features AYW Quasiresonant Peak Currentmode Control Operation 1 Primary Side Sensing (no optocoupler needed) AAx = Specific Device Code Wide V Range CC x = C, D or H Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate A = Assembly Location Clamp Y = Year W = Work Week Precise LED Constant Current Regulation 1% Typical = PbFree Package Line Feedforward for Enhanced Regulation Accuracy (Note: Microdot may be in either location) Low LED Current Ripple 8 250 mV 2% Guaranteed Voltage Reference for Current Regulation L30082x ~0.9 Power Factor with Valley Fill Input Stage ALYW Low Startup Current (13 A typ.) 1 Analog or Digital Dimming L30082x = Specific Device Code Thermal Foldback x = B, B1, B2, B3, D Wide Temperature Range of 40 to +125C A = Assembly Location L = Wafer Lot PbFree, HalideFree MSL1 Product Y = Year Robust Protection Features W = Work Week Over Voltage / LED Open Circuit Protection = PbFree Package Over Temperature Protection Secondary Diode Short Protection PIN CONNECTIONS Output Short Circuit Protection 1 Shorted Current Sense Pin Fault Detection SD DIM Latched and Autorecoverable Versions ZCD VIN Brownout CS VCC GND DRV V Under Voltage Lockout CC Thermal Shutdown (Top View) These Devices are PbFree and Halogen Free/BFR Free Typical Applications ORDERING INFORMATION Integral LED Bulbs See detailed ordering and shipping information on page 33 of this data sheet. LED Power Driver Supplies LED Light Engines Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: January, 2015 Rev. 5 NCL30082/DNCL30082 Aux . V DIM 1 8 2 7 3 6 45 Figure 1. Typical Application Schematic for NCL30082 Table 1. PIN FUNCTION DESCRIPTION Pin No Pin Name Function Pin Description 1 SD Thermal Foldback Connecting an NTC to this pin allows reducing the output current down to 50% and shutdown of its fixed value before stopping the controller. A Zener diode can also be used to pullup the pin and stop the controller for adjustable OVP protection 2 ZCD Zero Crossing Detection Connected to the auxiliary winding, this pin detects the core reset event. 3 CS Current sense This pin monitors the primary peak current 4 GND The controller ground 5 DRV Driver output The current capability of the totem pole gate drive (+0.3/0.5 A) makes it suit- able to effectively drive a broad range of power MOSFETs. 6 VCC Supplies the controller This pin is connected to an external auxiliary voltage. 7 VIN Input voltage sensing This pin observes the HV rail and is used in valley selection. This pin also BrownOut monitors and protects for low mains conditions. 8 DIM Analog / PWM dimming This pin is used for analog or PWM dimming control. An analog signal than can be varied between V and V can be used to vary the current, DIM(EN) DIM100 or a PWM signal with an amplitude greater than V . DIM100 www.onsemi.com 2