Introduction
   The ON Semiconductor Constant Current Regulator (CCR) family of devices offer outstanding regulation for LEDs and other current based loads, such as battery charging circuits. The CCR reduces the complexity of resistor biased designs for sensitive loads, such as LED strings connected in series. The CCR can also be connected in parallel for higher load current applications. The two−terminal CCR requires no external components to regulate at the specified current. These devices can be used wherever a constant current is needed to maintain luminosity under varying voltage conditions.