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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
高性能LED驅(qū)動(dòng)芯片  30W四級調(diào)光   
BF1005ON/OFF Dimming LED Driver IC
General Description
The BF1005 is 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 BF1005 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
l4 stages dimming function with ordinary switch
lTypical 5% output Current Accuracy
lConstant frequency start-up mode accelerate start-up process
lEliminatesOpto-coupler and TL431
lBuilt-in Short Circuit Protection, VDD Over Voltage Protection
lCycle-by-Cycle Current Limiting
lVDD Under Voltage Lockout with Hysteresis (UVLO)
lSmall SOT23-5 Package
Application
lLED lampion
lLED bulb ( E14、E27 etc)
lLED bedlamp
Typical Application

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