LD39015M08R

Overview

The LD39015M08R is a fixed-output linear voltage regulator manufactured by STMicroelectronics, providing a stable 0.8V output with a maximum current capacity of 150mA. It operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 80mV at full load. The device incorporates ultra-low quiescent current characteristics, ensuring efficient power management for battery-powered systems. It includes logic-controlled shutdown functionality, reducing consumption to under 1μA when disabled. Integrated protection mechanisms include short-circuit constant current limiting and thermal overload protection. The component is housed in a compact SOT-23-5 surface-mount package.

Feature Summary

• Ultra-low dropout voltage operation ensures high efficiency across varying load conditions
• Logic-controlled electronic shutdown enables deep sleep modes for extended battery life
• Integrated short-circuit and thermal protection safeguards against operational faults

Applications

• Mobile phones and portable communication devices
• Personal digital assistants (PDAs)
• Cordless telephones
• Battery-powered consumer electronics

Procurement Notes

Verify the specific suffix 'M08R' against official manufacturer documentation to confirm the 0.8V fixed output configuration and SOT-23-5 packaging. Ensure compatibility with ceramic output capacitors as specified in the datasheet. Confirm availability status, as supply chain variations may affect lead times or stock levels for this specific variant.

Selection Notes

Select this component for applications requiring precise low-voltage regulation with minimal noise and high efficiency. The 0.8V output is suitable for powering modern low-voltage digital logic or RF circuits. Consider the SOT-23-5 package size for space-constrained designs. Verify that the input voltage remains within the 1.5V to 5.5V range during all operating conditions.

Part Context

This part belongs to the LD39015xx series of low-quiescent-current, low-noise voltage regulators from STMicroelectronics. The series offers various fixed output voltages ranging from 0.8V to 3.3V in 100mV steps. The LD39015M08R specifically provides the lowest standard output voltage in the lineup, optimized for advanced low-power mobile applications requiring strict voltage tolerance and minimal static current draw.

Replacement Considerations

Direct pin-to-pin replacements should be verified against the official LD39015xx family cross-reference. Alternative LDOs must match the 150mA current rating, 0.8V output, and SOT-23-5 package. Check PSRR and noise specifications if used in sensitive RF sections.