Description
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.

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

Application
• 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