-Data Sheet


* General Description 

SFL900B  is  a  high  performance,  high  power  factor flyback   PWM   controller  special   for   LED   lighting applications. The  IC adopts unique super-PFC/PSRTM which can support both PSR and SSR applications.

SFL900B  is  pin   compatible  with  mainstream  PFC controllers such as XX6561/6562,   XX7527,   etc.

SFL900B  also   integrates  proprietary  min-THD  , technique, which can achieveless than 10% THD for universal line input.  SFL900B has built-in Load   CC  Compensation  and AC  Line   CC  Compensation   function,  which  can further increase LED output CC accuracy. The IC has Max.  90KHz  Frequency  Clamping  function  and  soft totem pole Gate driver to improve system conduction and  radiation  EMI.  The  IC   will  Clear  External  EA Feedback  Network  before  IC  power  on,  which  can reduces startup LED current spike. The IC also has Soft Start control during power on period. In  SFL900B,  the  proprietary  "Frequency  Adjusting"can help to improve THD performance, while ensures audio noise free operation. 

SFL900B   integrates  functions   and   protections   of Under  Voltage   Lockout  (UVLO),   LED  Open/Short Protection,    VCC   Over  Voltage  Protection  (OVP), Load Over Voltage Protection (Load OVP), Soft Start, Cycle-by-cycle  Current  Limiting  (OCP),  Burst  Mode Control   @   Light    Loading,   GD   Clamping,   VCC Clamping, etc. SFL900B is available in SOP-8 and DIP-8 packages.

* Features

  1. Super-PFC/PSRTM  Control Supports Both Primary Secondary Side Regulation (SSR) 
  2. Pin Compatible with Popular PFC Controllers
  3. THD<10% using min-THD    Technique
  4. Built-in  AC Line and Load Compensation for High Precision LED Output Current 
  5. Highly  Linear  Analog    Multiplier  with "Frequency Adjusting" for High PF 
  6. Max. 90KHz Frequency Clamping for EMI 
  7. LED Open/Short Protection
  8. Burst Mode Control @ Light Loading
  9. Trimmed 1.5% Internal Voltage Reference 
  10. Very Low Startup Current
  11. Under Voltage Lockout with 11.7V Hysteresis
  12. Built-in Soft Start
  13. Clear  External  EA  Feedback  Network  before  Power On 
  14. Cycle-by-Cycle Current Limiting 
  15. Built-in Leading Edge Blanking (LEB)
  16. VCC Over Voltage Protection (OVP)
  17. Audio Noise Free Operation
  18. 10V to 32V Wide Range of VCC Voltage
  19. 500mA Drive Capability




* Application
 




* Package / Order information

* Typical application circuit















 

Why choose us?

* Specilaze in IC for around 14 years 
* 100% Tested before sale
* Cooperate with over 35 famous brands from domestic and international market
* Competitive and reasonable price 
* Abundant inventory and short lead time about 3-7 days
* 1 Year warranty
* 24hrs supports from our sales and R&D team




Notes

* The pictures are taken by camera.
* You can contact us for a better price.
* Feel free to contact us if you would like to see other models.