NSI45020T1G Constant current Regulator

A Nifty Chip !

The NSI45020T1G from ON semi is a linear constant current regulator, simple, economical and robust designed to
provide a cost effective solution for regulating ie current in LEDs.

You can now replace the old series resistor and not worry about if the voltage is 12V or 20V, the LED current will be 20mA ! In fact the NSI45020T1G is a direct replacement for 1206 resistors. The 45V input makes it supply noise tolerant.