LED driver with increased efficiency

摘要: One of the several driver topologies provided by present invention combines a charge pump, DC/DC converter and current source. The pump is unregulated and, as result, has high efficiency. efficiency also combination yields an overall potentially more than 92%. A second topology voltage regulator connected to monitor forward driven LED uses reference produce adaptive regulated voltage. This allows react changes in setting lowest appropriate level. may be configured disable when battery exceeds predetermined