SSL5257TE - Silergy

SSL5257TE Mains dimmable buck-boost LED driver

The SSL5257TE is a highly integrated, high-precision buck-boost controller with an internal MOSFET. It is intended to drive low-cost compact dimmable LED lamps up to 10 W. The SSL5257TE is designed to achieve high power factor, phase-dimmable applications. The SSL5257TE operates in Boundary Conduction Mode (BCM) with on-time control. It regulates a constant .

Features

 Integrated MOSFET (10 /700 V)
 Supports most available dimming solutions
 Deep dimming level
 Flicker-free dimming
 Low component count ensuring a compact solution and small, single layer Printed-Circuit Board (PCB) footprint
 Excellent line regulation and load regulation and good LED output current accuracy
 Hotaru current control
 Internal thermal foldback
 Efficient BCM operation with:  Minimal recovery losses in freewheel diode  Zero Current Switching (ZCS) and Valley switching for turn-on of switch  Minimal inductance value and size required  High efficiency (up to 90 %)  .