LD39050PV10R

Overview

The LD39050PV10R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed for power management applications. It provides a fixed output voltage of 1 V with a maximum output current capability of 500 mA. The device operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 200 mV at full load. Quiescent current specifications vary by source, ranging from a typical 20 µA in no-load conditions to a maximum of 100 µA under load, with shutdown current below 1 µA. The regulator includes internal protection against overcurrent, thermal overload, and short circuits. It is housed in a compact 6-DFN (2x2 mm) package and supports operation across a temperature range of -40 °C to +125 °C.

Feature Summary

• Ultra-low dropout voltage performance ensures efficient power delivery even when the input voltage is close to the output level.
• Extremely low quiescent current consumption minimizes energy drain in battery-powered systems during both active and standby modes.
• Integrated safety mechanisms provide robust protection against overcurrent events, thermal stress, and output short circuits.
• Logic-controlled enable function allows precise system power management by placing the device into a deep shutdown state.

Applications

• Portable mobile communication devices requiring stable low-voltage rails
• Battery-operated consumer electronics prioritizing extended operational life
• Hard disk drive systems needing regulated power for control logic

Procurement Notes

Verify the specific suffix 'PV10R' corresponds to the fixed 1 V output variant when sourcing components. Confirm the package designation matches the required 6-DFN footprint for PCB layout compatibility. Ensure that the selected supplier provides documentation confirming RoHS compliance and the specific manufacturing lot details for quality assurance purposes.

Selection Notes

Select this component when a fixed 1 V supply is required with minimal voltage headroom. The low noise characteristic eliminates the need for external bypass capacitors, simplifying the design. Consider the thermal dissipation capabilities of the DFN package relative to the expected load current and ambient temperature conditions to ensure reliable operation within the specified junction temperature limits.

Part Context

This part belongs to the LD39050 series of low-noise LDO regulators from STMicroelectronics. The series offers adjustable and fixed output options, catering to various low-power application needs. The PV10R variant specifically denotes the fixed 1 V output configuration within this family, sharing common architectural features such as high PSRR and ceramic capacitor stability.

Replacement Considerations

Direct substitutes include other LD39050 variants with different fixed output voltages if the voltage requirement changes, such as LD39050PV18R or LD39050PV25R. For adjustable output requirements, the LD39050PVR may be considered, provided the external resistor network is redesigned accordingly.