• Wide input range: 4V-36V
• Current hysteresis control for boost stage
• Integrated low RDS(ON) FET for boost stage
• Integrated current ripple remover FET
• Compatible with electronic transformer and magnetic transformer
• Compatible with leading-edge (TRIAC) dimmer and trailing-edge dimmer
• Flicker-free dimming
• Active Bleeding Support
• Overvoltage protection for boost output voltage
• Over temperature protection for boost stage and current ripple remover
• Compact package: SO8E

The SY22627 is a high efficiency dimmable LED regulator for 12V halogen lamp-replacement market. It operates over a very wide input voltage range from 4V to 36V and integrates a very low RDS(ON) power switch for boost stage to minimize the conduction loss. A built-in current ripple remover is used to simplify the design for cost down.

The current hysteresis control scheme of boost and current ripple remover are used to improve the electronic transformer compatibility and dimmer compatibility.