SNVS769J March 2000 – December 2014 LM2940-N , LM2940C
PRODUCTION DATA.
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The device is designed to operate from an input voltage supply range between VOUT + 1 V up to a maximum of 26 V. This input supply must be well regulated and free of spurious noise. To ensure that the LM2940 output voltage is well regulated, the input supply should be at least VOUT + 2 V.