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The LDK220PU27R is a positive fixed linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 2.7V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 2.5V to 13.2V and features a typical dropout voltage of 100mV at 100mA load, with a maximum specified at 0.35V under full load conditions. Quiescent current is typically 90µA, reducing to less than 1µA in shutdown mode enabled by logic control. It includes internal overcurrent and thermal protection mechanisms.
Verify the specific suffix '27' confirms the 2.7V fixed output variant. Confirm the 'PU' designation corresponds to the 6-DFN (1.2x1.3mm) package. Ensure the trailing 'R' indicates reel packaging if required for automated assembly processes. Cross-reference the manufacturer part number against official datasheets to validate pinout and electrical tolerances before integration.
Select this component when a precise 2.7V rail is needed from varying input sources up to 13.2V. The low quiescent current makes it suitable for battery applications where standby drain is critical. The DFN6 package offers a compact footprint for space-constrained designs. Verify that the 200mA load requirement does not exceed the thermal dissipation limits of the chosen PCB layout.
This part belongs to the LDK220 series of low-dropout regulators designed for high efficiency and low noise. The series supports various fixed voltages and adjustable configurations across multiple packages including SOT23-5L, SOT-89, and DFN6. The LDK220PU27R specifically utilizes the DFN6 package for surface-mount applications requiring minimal board area.
LDK220PU-R serves as the adjustable voltage counterpart within the same package family. Other fixed voltage variants such as LDK220PU25R or LDK220PU33R share identical pinouts and thermal characteristics but provide different nominal output levels.