LDK130M08R

Overview

The LDK130M08R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed for automotive applications. It provides a fixed output voltage of 0.8 V with a maximum load current of 300 mA. The device operates within an input voltage range of 1.9 V to 5.5 V and features a typical dropout voltage of 100 mV at 100 mA. It exhibits a low quiescent current of 30 μA and consumes less than 1 μA in shutdown mode. The component is AEC-Q100 qualified for Grade 1 and supports ceramic capacitors as small as 1 μF on the output.

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
• Compatible with small-value ceramic output capacitors, simplifying board layout and reducing footprint

Applications

• Low-power battery-powered automotive systems
• Automotive body electronics requiring stable low-voltage rails
• Noise-sensitive analog circuits in vehicle infotainment or sensor interfaces

Procurement Notes

Verify that the specific part number suffix corresponds to the required package type, such as SOT23-5L, SOT323-5L, or DFN6 1.2x1.3 mm. Confirm AEC-Q100 Grade 1 qualification status if automotive reliability is mandatory. Ensure the design utilizes a ceramic capacitor of at least 1 μF on the output pin to maintain stability under all load conditions.

Selection Notes

Select this regulator when a precise 0.8 V rail is needed from a 1.9 V to 5.5 V source. It is suitable for designs prioritizing minimal static current draw and high noise immunity. Consider the available packages based on thermal requirements and space constraints. Verify that the application does not require adjustable output voltages, as this variant is fixed.

Part Context

The LDK130 series comprises low-dropout regulators optimized for automotive environments. These devices offer wide input voltage ranges and robust protection features. The family includes various fixed output voltages from 0.8 V to 3.5 V. They are engineered for high reliability and compatibility with standard ceramic capacitors, supporting diverse automotive power distribution needs.

Replacement Considerations

Check for other LDK130 variants with different fixed output voltages if the system requires a different rail. Verify package compatibility if substituting between SOT23-5L, SOT323-5L, or DFN6 options. Ensure any alternative maintains AEC-Q100 Grade 1 qualification for automotive use.