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                                      SSL5255TE - Mains dimmable buck-boost LED driver IC 5 Ohm/450 V

                                      Features

                                      This device is no longer available.  Please see the EOL notice.

                                      • Integrated MOSFET (5 Ω /450 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 %)
                                        • Ultra low IC current during operation (< 200 μA)
                                      • Auto-recovery protections:
                                        • UnderVoltage LockOut (UVLO)
                                        • Cycle-by-cycle OverCurrent Protection (OCP)
                                        • Internal OverTemperature Protection (OTP)
                                        • Output OverVoltage Protection (OVP)
                                        • Output Short Protection (OSP)

                                      Extended IC lifetime

                                      Typical Application


                                      Description

                                      The SSL5255TE 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 12 W. The SSL5255TE is designed to achieve high power factor, phase-dimmable applications.

                                      The SSL5255TE operates in Boundary Conduction Mode (BCM) with on-time control. It regulates a constant output current over line and load variations. The wide switching frequency range makes it possible to choose an inductor, which enables the optimization of inductor size, efficiency and EMI.

                                      The SSL5255TE can start up and operate in switching mode directly from the rectified mains. To provide a low-cost driver design, an off-the-shelf inductor can be used, which provides flexibility in application design.

                                      Applications


                                      The SSL5255TE is intended for low-cost, non-isolated dimmable lighting applications that work from single mains voltage.

                                      湖北十一选五遗漏走势图

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