深圳海立辉科技代理JW1767B单级PFC非隔离过EMCLED驱动电源方案IC或EV1767B
JW1767B概述：
The JW1767A/B is a constant current LED regulator with high current accuracywhich applies to single stage step-down powerfactor corrected LED drivers. 600V power MOSis integrated, which can significantlysimplify the design of LED lighting system.
High accuracy of output current isachieved by sampling the output current directly.Critical conduction mode operation reduces theswitching losses and largely increases theefficiency. JW1767A/B is supplied from the outputdirectly, and auxiliary winding is not needed.
JW1767A/B has multi-protectionfunctions which largely enhance the safety andreliability of thesystem, including VCC over-voltageprotection, VCC UVLO, short-circuit protection, LEDopen protection, cycle-by-cycle currentlimit and over-temperature protection.
JW1767B特点：
◆No auxiliary winding
◆600V high voltage MOSFET integrated
◆High current accuracy of line and load regulation
◆High power factor with low output current-ripple
◆Critical conduction mode
◆High efficiency over wide operatingrange
◆Cycle-by-cycle current limit
◆LED short protection
◆LED open protection
◆Over-temperature protection
◆Compact SOP7 package
公司名：深圳市海立辉科技有限公司
联系人：张小姐
座机 ：0755-82538095
手机：15999667050
QQ : 340316564 619223627
邮箱:hailihuikj@163.com
http://www.hailihuidz.com
