G8211

G8211/GP8211 High Power Factor & Accuracy Constant Current LED Driver Description Application The G8211 is a highly-integrated, low startup current, average current mode, one cycle control PFC and fixed switching frequency PWM controller. These functions enable the LED driver to easily meet the accuracy average LED current and high power factor requirements. The integrated functions also include the LED short protection, open protection, and internal over temperature protection. The COMP pin controls the duty by connected an RC compensation network to ground and forming the closed loop feedback control. To protect the external power MOSFET from being damaged by supply over voltage, the G8211 OUT pin voltage is clamped to about 12V. The G8211 improves the performance and reduces the cost of the LED driver. LED Off-line Lamps High Voltage DC-DC LED Driver Signage and Decorative LED Lighting Back Lighting of Flat Panel Displays General Purpose Constant Current Source Features High Power Factor by One Cycle Control Accuracy Constant Current Low BOM Cost Linear Dimming on DIM Pin Average Current / Fixed Frequency Control Gate Output Voltage Clamp LED Open Protection (OVP) LED Short Protection (SCP) Over Current Protection (OCP) Internal OTP Protection Ordering Information Device G8211 GP8211 Marking G8211 GP8211 Package 8-SOP 8-DIP 8-SOP 8-DIP Rev.1 - 1 - Jul. 2014 G8211/GP8211 Block Diagram VCC CS COMP 15V/8V Internal Bias & Vref ...