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The LDK120PU12R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.2V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 100mV at 100mA load. Key electrical specifications include a maximum quiescent current of 60µA, a power supply rejection ratio (PSRR) of 55dB from 120Hz to 10kHz, and a maximum supply current of 100µA. The unit is housed in a compact 6-DFN package measuring 1.2x1.3mm.
Verify the specific suffix PU12R against official datasheets to confirm the 1.2V fixed output and DFN6 packaging. Ensure compatibility with standard surface-mount reflow profiles. Confirm RoHS3 compliance status prior to final procurement decisions.
Select this component when a stable 1.2V rail is required with minimal footprint. The low quiescent current makes it suitable for energy-efficient designs. Verify that the application load does not exceed the 200mA limit and that input voltage remains within the specified operational range.
This part belongs to the LDK120 series of ultra-low dropout regulators designed for harsh environments. The series offers various output voltages and packages, including SOT23-5L and SOT323-5L. The LDK120PU12R specifically utilizes the DFN6 package for space-constrained PCB layouts.
LDK120C12R: Alternative package version using SOT-323-5 with identical 1.2V output and 200mA rating.