SSL2109AT Datasheet PDF - Silergy

●The SSL2109AT, a controller-only device used to drive an external switch, is for applications up to 25 W (external MOSFET selection enables flexibility on efficiency and system cost) and extends the feature set with high power factor (>0.9), universal mains, and isolated topologies.

●Features

● Flyback or Buck controller-only with external MOSFET

● Power-efficient boundary conduction mode

● Tight LED current regulation: better than 5%

● Direct PWM dimming possible

● Fast transient response via cycle-by-cycle control

● No need for binning on LED forward voltage

● Full set of internal protections

● Simple design-in

● “A” versions without short winding protection

● Support for high power factor (>0.9) and universal mains

● High efficiency: up to 95% measured on reference board

● Low bill of materials: only 14 components for full application

● Easy, low-cost manufacturing at high volumes

● High reliability: IC lifetime easily matches or surpasses LED lamp lifetime