Driver chip , lighting circuit and lighting system

The utility model discloses a driver chip, lighting circuit and lighting system, voltage difference and reference voltage between holding according to chip power supply end and chip ground through thevoltage testing among the driver chip export square signal to the data processing module who comprises high level and low level, duration output data code stream to the logic control module of data processing module high level and low level in according to square signal, address module output address code to logic control module, logic control module is according to data code stream and address code output control signal to output driver module, output driver module is according to the pulse signal of the different duty cycles of control signal output. Realized coming the change of control illumination through receiving signal battery, all chips can both in time correct effectual discernment signal battery, can discern signal battery according to the change of the voltage difference at chip both ends to can contr