Selection and Solution Guides

Application Notes

Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A)


In many applications, a constant-current constant-voltage (CC/CV) dc source is needed. The I-V characteristic of a constant-current constant-voltage (CC/CV) source is shown in Figure 1. This application report presents an external op-amp based accurate current limit circuit suitable for CC/CV operation when the required constant current range is very narrow.