描述 Description

The NCL30185 is an AC-DC power factor corrected flyback controller targeting isolated and non?isolated buck-boost/SEPIC constant current LED drivers. The controller operates in a quasi?resonant mode to provide optimal efficiency. 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 controller has integrated 3 step log dimming which allows an LED bulb or luminaire to be dimming from a standard wall switch.
In addition to steps of 70% and 25% which are similar to a traditional 3 way lamp, one additional step of 5% current is included to support deep dimming applications.

特性 Features

? Constant Current Control with Primary Side Feedback
? No need for binning of LEDs or production trimming for accuracy
? No need for binning of LEDs or production trimming for accuracy
? Exceeds industry requirements for lighting
? 3 dimmable steps of 70%, 25%, and 5% of full current
? Energy saving dimming with standard wall switch
? Line Feedforward for Enhanced Regulation Accuracy
? Supports accurate regulation for universal mains applications
? Wide Vcc operating range
? Simplifies support for a broad range of LED forward voltages with one magnetic design
? User Programmable Thermal Foldback
? Protects LED driver from overheating in severe situations
? Output LED open and short protection
? Robust fault handling of common LED system faults
? Secondary Diode Short Protection
? Avoids overheating in fault condition
? VCC undervoltage and overvoltage protection
? Robust fault handling
? Wide Temperature range of -40 to 125 °C
? Suports outdoor and high temperature environments
? Auto-recoverable (B-version) and Latched (A-version) fault handling options

應(yīng)用 Application

? Integrated LED Driver Electronics
? LED Lighting
? LED Bulbs
? LED Driver Power Supplies
? LED Light Engines
? LED Tubes
? Electronic Control Gear for LED Systems

簡(jiǎn)介

NCL30185屬于集成電路（IC）的LED驅(qū)動(dòng)器。由制造生產(chǎn)的NCL30185LED 驅(qū)動(dòng)器器件屬于 LED 驅(qū)動(dòng)器電源管理集成電路 (PMIC) 系列，可通過標(biāo)稱固定電壓的電源為負(fù)載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通?？蓪?duì)器件工作點(diǎn)進(jìn)行外部控制，可在照明應(yīng)用中用于實(shí)現(xiàn)調(diào)光功能。