SNVS663H June 2010 – August 2015 LMZ12003EXT
The LMZ12003EXT device is designed to operate from an input voltage supply range between 4.5 V and 20 V. This input supply must be well regulated and able to withstand maximum input current and maintain a stable voltage. The resistance of the input supply rail must be low enough that an input current transient does not cause a high enough drop at the LMZ12003EXT supply voltage that can cause a false UVLO fault triggering and system reset. If the input supply is more than a few inches from the LMZ12003EXT, additional bulk capacitance may be required in addition to the ceramic bypass capacitors. The amount of bulk capacitance is not critical, but a 47-μF or 100-μF electrolytic capacitor is a typical choice.