詳細(xì)信息
免費(fèi)提供樣品 技術(shù)支持
謝達(dá)成
電話 ：13500016905
QQ：2557289845
中山辦事處地址：中山市古鎮(zhèn)鎮(zhèn)樂豐花園三期A2棟502
總部地址：深圳市龍崗區(qū)創(chuàng)新產(chǎn)業(yè)園A4棟10樓
The BF1004is a high performance AC/DC on/off LED driver with four-stages dimming. It uses PFM method to build DCM fly-back power supplies. It operates in primary-side sensing and regulation while removing the need of secondary feedback circuitry. The device operates in PFM in CC mode and ON-OFF in CV mode. The has a four-stages dimming function. That means the output current will be adjusted to 100% when the first time power on corresponding to the first stage, 55% when the second time power on corresponding to the second stage, 25% when the third time power on corresponding to the third stage and 10% when the fourth time power on corresponding to the fourth stage. The cycle will restart to stage-one again when the fifth time power on. So this cycle will go on if the power off time is no more than 0.8 seconds.
Features
4 stages dimming function with ordinary switch
Typical 5% output Current Accuracy
Constant frequency start-up mode accelerate start-up process
Eliminates Opto-coupler and TL431
Built-in Short Circuit Protection, VDD Over Voltage Protection
Cycle-by-Cycle Current Limiting
VDD Under Voltage Lockout with Hysteresis (UVLO)
Small SOT23-5 Package
Application
LED lampion
LED bulb ( E14、E27 etc)