The R1180N291B-TR-FE from Ricoh is a linear voltage regulator Integrated Circuit with low supply current, rated 150m.
The R1180N291B-TR-FE from Nisshinbo Micro Devices Inc. is a positive fixed linear voltage regulator Integrated Circuit with 1 output, 2.9 V and 150 mA, in a SOT-23-5 package.
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