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UCL5811

更新时间: 2024-11-22 01:21:03
品牌 Logo 应用领域
友顺 - UTC 驱动功率因数校正
页数 文件大小 规格书
5页 192K
描述
PSR & PFC LED DRIVER CONTROLLER

UCL5811 数据手册

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UNISONIC TECHNOLOGIES CO., LTD  
UCL5811  
Preliminary  
CMOS IC  
PSR & PFC LED DRIVER  
CONTROLLER  
DESCRIPTION  
The UTC UCL5811 is a single-power stage, isolated and primary  
side offline LED lighting regulator which achieves high power factor.  
The proprietary real-current control method can control the LED  
current accurately from the primary side information. It can  
significantly simplify the LED lighting system design by eliminating the  
feedback components and the opto-coupler.  
SOP-8  
The UTC UCL5811 integrates active power factor correction and  
works in Quasi Resonance mode (QRM) in order to reduce the  
MOSFET switching losses. With a building in 700V start-up MOSFET,  
IC can eliminate the power loss caused by start-up resistors to provide  
a high efficiency solution for lighting applications. The external  
programmable line voltage compensation provides a more precise  
output current throughout the universal AC input voltage range. The  
leading edge blanking circuit on the CS/FB input removes the signal  
glitch and results in reduced external components and system cost.  
The multi-protection features of UTC UCL5811 greatly enhance the  
system reliability and safety.  
The UTC UCL5811 VDD and output over voltage protection; output  
short circuit protection, cycle-by-cycle current limit and secondary  
peak current protection on CS pin, VDD UVLO andauto-restart and  
over-temperature protection.The driver output voltage is clamped at  
18V to protect the external power MOSFET.  
FEATURES  
* Single stage PFC  
* Building in hysteresis OTP  
* Primary side regulation without Secondary Feedback  
* Quasi Resonance (QR) mode with Fly-back topology  
* Real-Current control to meet accurate output current  
* Very less components  
* VDD over voltage protection  
* Cycle by cycle current limiting on CS pin  
* Secondary peak current protection on CS pin  
* Output short to GND protection  
* Programmable input AC compensation  
* Leading Edge Blanking on CS/FB pin  
* Output programmable over voltage protection  
* FB and CS pins default protection  
ORDERING INFORMATION  
Ordering Number  
UCL5811G-S08-R  
Package  
SOP-8  
Packing  
Tape Reel  
www.unisonic.com.tw  
1 of 5  
Copyright © 2016 Unisonic Technologies Co., Ltd  
QW-R125-060.a  

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