LDK130M22RY

Overview

The LDK130M22RY is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed for automotive applications. It provides a fixed output voltage of 2.2 V with a maximum output 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 load. It exhibits a low quiescent current of 30 µA and includes an enable function that reduces standby consumption to less than 1 µA. The component is qualified under AEC-Q100 standards and functions reliably across a temperature range of -40 °C to +125 °C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards
• Logic-controlled electronic shutdown for ultra-low power consumption
• Internal short-circuit constant current limiting and thermal protection

Applications

• Low-power battery-powered automotive systems
• Portable electronic devices requiring stable voltage regulation
• Noise-sensitive automotive sensor circuits

Procurement Notes

Verify the specific suffix 'RY' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with SOT23-5L footprint requirements. Confirm AEC-Q100 Grade 1 status matches project automotive reliability standards before finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.2 V rail is required in space-constrained automotive designs. The SOT23-5L package offers a compact solution compared to larger regulators. Consider the 300 mA current limit and 100 mV dropout characteristics to ensure adequate headroom for the target load current and input voltage variations.

Part Context

This part belongs to the LDK130 series of low-dropout regulators from STMicroelectronics. The series is characterized by very low noise and low quiescent current, making it suitable for sensitive analog and digital loads in automotive environments. Other variants in the family offer different fixed output voltages while sharing similar electrical characteristics and packaging options.

Replacement Considerations

Consult official STMicroelectronics substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters carefully when considering generic LDO replacements to ensure automotive grade compliance and package compatibility.