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                                      SSL4101T - Flyback power supply controller IC with PFC for LED lighting

                                      Features

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

                                      • Integrated PFC and flyback controller
                                      • True universal mains supply operation: 70 V (AC) to 305 V (AC)
                                      • High level of integration, resulting in a:
                                      • - very low external component count
                                      • - cost-effective design
                                      • On-chip start-up current source
                                      • Valley/zero voltage switching for minimum switching losses
                                      • Frequency limitation to reduce switching losses
                                      • PFC is switched off when a low load is detected at the flyback output
                                      • Valley switching for minimum switching losses
                                      • Frequency reduction with fixed minimum peak current at low power operation
                                      • Safe restart mode for system fault conditions
                                      • Continuous mode protection by means of demagnetization detection
                                      • UnderVoltage Protection (UVP) (foldback during overload)
                                      • Accurate OverVoltage Protection (OVP) for both converters
                                      • Open control loop protection for both converters
                                      • IC overtemperature protection
                                      • Low and adjustable OverCurrent Protection (OCP)
                                      • General purpose input for latched protection

                                      Typical Application


                                      Description

                                      The SSL4101T combines a controller for Power Factor Correction (PFC)and a flyback controller. Its high level of integration allows the design of a cost-effective LED lighting application power supply with a very low number of external components. The built-in green functions provide high efficiency at all power levels. This applies to quasi-resonant operation at high power levels, quasi-resonant operation with valley skipping, as well as to reduced frequency operation at lower power levels. At low power levels, the PFC switches off to maintain high efficiency.

                                      Applications


                                      • Industrial high-bay and low-bay lighting
                                      • Commercial interior lighting
                                      • Parking garage and area lighting
                                      • Street lighting

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