SY5810(矽力杰一级代理)SY5810ABC假一赔十_SY5810

SY5810
General  DeSCRJPTion
The  SY5810  is  a  single  stage  Flyback  and  PFC  controller  targeting  at  LED  lighting  applications.  It  is  a  primary  side  controller  without  applying  any  secondary  feedback  circuit  for  low  cost,  and  drives  the  Flyback  converter  in  the  quasi-resonant  mode  to  achieve  higher  efficiency.  It  keeps  the  Flyback  converter  in  constant  on  time  operation  to  achieve  high  power  factor.

Features
*  Primary  side  control  eliminates  the  opto-coupler.
*  Valley  turn-on  of  the  primary  MOSFET  to  achieve
low  switching  losses
*  0.3V  primary  current  sense  reference  voltage  leads  to  a  lower  sense  resistance  thus  a  lower  conduction  loss.
*  Internal  high  current  MOSFET  driver:  0.25A  sourcing  and  0.5A  sinking
*Low  start  up  current:  15μA  typical
*Reliable  short  LED  and  Open  LED  protection
*Power  factor  >0.90  with  single-stage  conversion.
*Compact  package:  SOT23-6
高效率高PFC,SY5810,1.  集成PFC,功率因数很高,  隔离效率大部分情况下在88%、89%,高达92%,PFC  0.95到0.99,  2.原边控制QR模式,省去光耦和相关电路,降低BOM  cost  3.  独特的MOSFET控制技术,对MOSFET和快恢复二极管的要求降低很多,不必选择昂贵的MOSFET和二极管,  高功率因数、精度3%以内,QR模式、  高效率、稳定性高、一致性好、外围器件少、空间小、性价比高。

SY5810(矽力杰一级代理)SY5810ABC假一赔十

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