产品简介 :

FT8350x is a high precision primary-side feedback and regulation constant current driver for LED lighting applications. It operates in inductor current discontinuous conduction mode (DCM) and is especially suitable for flyback converter under universal input. Under universal input voltage from 85V to 265V, the system output power is recommended from 3W to 24W respectively of different internal power switch.

The FT8350x integrates a 700V power NPN and eliminates secondary sense and feedback circuit. The loop compensation components are also removed while maintaining stability over all operating conditions. It uses a source drive architecture and patent demagnetization sensing technology with very low operating current, Patents of self power supply technology. the auxiliary winding for sensing the output and supplying the chip is therefore eliminated, resulting in low component counts and small system size. 

With its highly accurate current sense method, the FT8350x realizes ±3% accuracy of LED current along with excellent line and load regulation.

The multi-protection function of FT8350x can greatly enhance the system reliability and safety. The FT8350x features LED open/short circuit protection, CS resistor short circuit protection, over temperature compensation and VCC UVLO protection. The industry leading OVP voltage accuracy ensures the best LED open circuit protection.

产品特点 :

Built-in 700V power NPN 

PSR constant current control without secondary sense and feedback circuit 

Patents of demagnetization sensing and self power-supply technology

Ultra low operating current for high efficiency

Universal input voltage 

±3% LED current accuracy 

Programmable precision OVP voltage for best LED open circuit protection 

LED short circuit protection 

Patent of CS resistor short circuit protection 

VCC under-voltage protection 

Over temperature compensation 

Available in SOP8 and DIP8 packages 


规格书 Part No.: FT8350x 版本: 0.80 添加时间: 2018-05-24 支持型号: FT8350A、FT8350C、FT8350CD、FT8350DD 附件: ft8350x_ds_rev0.80.pdf
推广资料 Part No.: FT8350A 12S250mA 版本: 1.0 添加时间: 2018-05-24 支持型号: FT8350A 附件: ft8350a 12s250ma promotion.pdf