Overview
   TP8217 is a dual-winding primary feedback LED constant current driver chip with three-stage switch dimming function. The chip works in the inductor current discontinuous mode, which is particularly suitable for low-power isolated LED dimming power supply applications with a full voltage input range of 85VAC~265VAC.

FEATUREs
• Integrated three-stage switch dimming function
• 100%, 50%, 10% dimming brightness
• Internally integrated 650V power tube
• Primary feedback mode, no secondary feedback circuit required
• Transformer dual winding control technology
• Low operating current, no auxiliary winding power supply required
• Wide input voltage range
• ±5% LED output current accuracy
• VCC power clamp function
• LED open circuit protection
• LED short circuit protection
• Chip power supply undervoltage protection
• Chip overtemperature protection
• Automatic restart function
• Small system size, low BOM cost
• SOP8L package

APPLICATIONs
• GU10 LED spotlight
• E17/E27 LED candle light
• LED bulb
• Other LED lighting