Nisshinbo Micro Devices Inc. SOT89-5 R1172H121B-T1-FE

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The R1172H121B-T1-FE is a linear voltage regulator IC from an undisclosed manufacturer, possibly within the R1172x series. This CMOS-based component is designed for positive voltage regulation and features high ripple rejection, low dropout voltage, precise output voltage control, and low quiescent current consumption. It includes built-in elements such as a voltage reference unit, error amplifier, resistor network for setting the output voltage, current limiting circuitry for short-circuit protection, enable control, and thermal shutdown functionality. The output voltage of the R1172H121B-T1-FE model is factory-set within the chip.