NCL30186: AC-DC Power Factor Corrected Quasi-Resonant Primary Side Current Mode Controller for LED Lighting with Smart Analog/Dimming Capability
The NCL30186 is an AC-DC power factor corrected flyback controller targeting isolated and non−isolated “Smart−dimmable” constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal efficiency. The current control algorithm supports flyback, buck−boost, and SEPIC topologies. Thanks to a novel control method, the device is able to tightly 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 is specifically intended for very compact space efficient designs and supports analog and PWM dimming with a dedicated dimming input intended to control the average LED current. To ensure reliable operation at elevated temperatures, a user configurable current foldback circuit is also provided. The NCL30086 is housed in
the SOIC10 which has the same body size as a standard SOIC8.
Features- Constant Current Control with Primary Side Feedback
- Power factor correction with low harmonic distortion
- Precise Current Regulation Accuracy
- Line feedforward for enhanced regulation accuracy
- Wide Vcc operating range
- User Programmable Thermal Foldback
- Open and Shorted LED/Output Diode Protection
- Wide temperature range of -40 to 125 °C
- Dedicated Analog/Digital Dimming control
- VCC Undervoltage and overvoltage protection
| Benefits- No Optocoupler or secondary control circuitry required
- Exceeds industry needs for lighting
- No need for binning of LEDs or production trimming
- Improve regulation acrross line variation
- Supports wide range of LED forward voltages
- Protects LED driver from overheating under severe conditions
- Enhanced fault handling
- Supports outdoor and high temperature environments
- Enables smart lighting applications
- VCC Undervoltage and overvoltage protection
|
Applications- Integrated LED Drive Electronics
- LED Driver
- Open Frame LED Driver
| End Products- LED Bulbs and Tubes
- LED Lighting Engines
- Electronic Control Gear for LED System
|
Application Notes (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| SOIC-10 NB | 751BQ (56.7kB) | B |
Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCL30186ADR2G | Active | Pb-free
Halide free | SOIC-10 NB | 751BQ | 1 | Tape and Reel | 2500 | $0.4787 |
| NCL30186BDR2G | Active | Pb-free
Halide free | SOIC-10 NB | 751BQ | 1 | Tape and Reel | 2500 | $0.4787 |
| NCL30186DDR2G | Active | Pb-free
Halide free | SOIC-10 NB | 751BQ | 1 | Tape and Reel | 2500 | $0.4787 |
Specifications
| Product | Topology | VI Min (V) | VI Max (V) | VO Max (V) | IO Max (mA) | fSW Typ (kHz) |
|---|
| NCL30186ADR2G | Step-Up/Step-Down | 9.4 | 26 | 200 | 3000 | Up to 150 |
| NCL30186BDR2G | Step-Up/Step-Down | 9.4 | 26 | 200 | 3000 | Up to 150 |
| NCL30186DDR2G | Step-Up/Step-Down | 9.4 | 26 | 200 | 3000 | Up to 150 |
