The ZXSC300 is a single or multi cell LED driver designed for applications where step-up voltage conversion from very low input voltages is required.These applications mainly operate from single 1.5V or 1.2V battery cells. The circuit generates constant current pulses that are ideal for driving single or multiple LED’s over a wide range of operating voltages.
The ZXSC300 is a PFM controller IC that drives an external Zetex switching transistor with a very low saturation resistance. These transistors are the best
switching devices available for this type of switching conversion enabling high efficiency conversion with input voltages below 1 volt. The drive output of the
ZXSC controller generates a dynamic drive signal for the switching transistor.