LDK130PU30R

Overview

The STMicroelectronics LDK130PU30R is a single-output low-dropout (LDO) linear voltage regulator providing a fixed 3 V output. It supports a maximum output current of 300 mA with an input voltage range from 1.9 V to 5.5 V. Key electrical parameters include a line regulation of 0.05 %/V, load regulation of 0.006 %/mA, and an accuracy of ±3%. The device features a typical quiescent current of 120 µA and operates within a temperature range of -40 °C to +125 °C. It is housed in a compact 6-pin DFN package measuring 1.3 x 1.2 x 0.45 mm.

Feature Summary

• Logic-controlled electronic shutdown function enables deep sleep mode for ultra-low power consumption.
• Integrated short-circuit constant current limiting and thermal protection ensure robust operation under fault conditions.
• Compatible with small ceramic output capacitors, facilitating minimal external component requirements.

Applications

• Low-power battery-powered consumer electronics
• Automotive sensor power supplies
• Post-regulation stages in embedded systems

Procurement Notes

Verify the specific suffix 'PU30R' against official STMicroelectronics documentation to confirm the 3 V fixed output variant. Ensure the ordering code matches the required 6-DFN package configuration. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a stable 3 V rail is required from inputs between 1.9 V and 5.5 V. The low quiescent current makes it suitable for battery-operated devices where standby power is critical. The integrated enable pin allows for system-level power management control. Verify that the expected load current does not exceed the 300 mA limit under all operating temperature conditions.

Part Context

The LDK130 series comprises low-noise, low-quiescent current LDO regulators designed for precision applications. This specific model belongs to the automotive-grade family, offering high reliability and wide temperature tolerance. The series is characterized by its ability to drive significant loads while maintaining tight voltage regulation and low noise performance.

Replacement Considerations

Other variants within the LDK130 family offer different fixed output voltages but share identical packaging and functional characteristics. Verify that any substitute maintains the same 300 mA current capability and 6-DFN footprint to ensure mechanical compatibility without redesigning the PCB layout.