HT7L4661 Active PFC Non-isolation Buck LED Lighting Driver With Dimming Function
Feature
• Non-isolation buck topology
• Wide AC input range − from 85VAC to 265VAC • High Power Factor of 0.
9 without additional
circuitry
• Internal 650V high
voltage JFET for quick startup
• Provides 5V LDO output
• Accurate constant current ( ±3%)
• Includes linear dimming function
• Low operating current to maximise conversion efficiency
• Under-
voltage lockout with hysteresis
• Full protection functions for enhanced safety –– Maximum gate drive output clamp –– VCC over
voltage protection − VCC OVP –– VCC under-
voltage lockout with hysteresis − VCC UVLO –– Output LED string over current protecti...