Overview
TP8553C is a high-efficiency non-isolated buck LED constant current driver chip with three-stage switch dimming function, suitable for non-isolated buck LED dimming power supply with full voltage input range of 85VAC~265VAC.

FEATUREs
• Integrated three-stage switch dimming function
• 100%, 50%, 10% dimming brightness
• Internally integrated 500V power tube
• Inductor current critical mode
• Ultra-low chip operating current
• No auxiliary winding detection and power supply required
• Wide input voltage
• High system operating efficiency
• ±5% LED output current accuracy
• LED open circuit protection
• LED short circuit protection
• CS resistor short circuit protection
• Chip power supply undervoltage protection
• Intelligent chip temperature control
• Insensitive to inductance changes
• Automatic restart function
• Low system BOM cost
• SOP8L package

APPLICATIONs
• LED bulbs, candle lights, corn lights
• LED fluorescent lamps, PAR lamps
• Other LED lighting