LDK130M12R

Overview

The LDK130M12R is a positive, fixed-output Low Dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 1.2V output with a maximum current capacity of 0.3A. The device operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 0.4V at full load. Key electrical parameters include ±2% output accuracy, 0.05%/V line regulation, and 0.006%/mA load regulation. Quiescent current is typically 0.06mA, rising to less than 1μA in shutdown mode via logic control. It utilizes a 5-pin SOT-23 package.

Feature Summary

• Logic-controlled electronic shutdown function enables ultra-low power consumption in standby states.
• Internal protection mechanisms include short-circuit constant current limiting and thermal overload protection.
• Designed for stability with ceramic output capacitors, supporting compact board layouts.

Applications

• Low-power battery-powered consumer electronics
• Automotive systems requiring AEC-Q100 qualified components
• Noise-sensitive analog circuit power supplies

Procurement Notes

Verify the specific suffix 'M12R' against official STMicroelectronics documentation to confirm the 1.2V fixed output variant. Ensure compatibility with the SOT-23-5L package dimensions and lead finish specifications required by your assembly process. Confirm that the automotive grade qualification aligns with your system's environmental operating requirements.

Selection Notes

Select this component when a fixed 1.2V rail is required from a 1.9V to 5.5V source with minimal noise. It is suitable for designs prioritizing low quiescent current and high efficiency under light loads. Consider the thermal resistance characteristics if operating near maximum current limits or in enclosed spaces.

Part Context

This part belongs to the LDK130 series of low-dropout regulators designed for automotive and industrial applications. The series offers various fixed output voltages and packages, including SOT23-5L, SOT323-5L, and DFN6. The LDK130M12R specifically addresses the need for precise, low-noise power delivery in space-constrained, battery-operated devices.

Replacement Considerations

Consult STMicroelectronics datasheets for other LDK130 variants with different output voltages or packages. Verify pinout compatibility before substituting with similar LDOs from other manufacturers to ensure functional equivalence in automotive-grade environments.