LD39050PVR

Overview

The LD39050PVR is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed for low-power battery-operated applications. It provides a maximum output current of 500 mA with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV at full load. The device features very low quiescent current, consuming 20 µA at no load and up to 100 µA at 500 mA load, while drawing less than 1 µA in shutdown mode. It offers adjustable output voltages ranging from 0.8 V to 4.5 V with a tolerance of ±2.0% at 25 °C. Stability is ensured using ceramic capacitors between 1 µF and 22 µF. Integrated protections include short-circuit current limiting and thermal shutdown at approximately 160 °C.

Feature Summary

• Ultra-low dropout voltage capability ensures efficient power regulation under varying load conditions.
• Very low quiescent current consumption extends battery life in portable electronic devices.
• Low noise performance eliminates the need for external bypass capacitors.
• Logic-controlled enable function allows precise power management with minimal shutdown current.

Applications

• Mobile phones
• Hard disk drives
• Battery-powered systems

Procurement Notes

Verify that the specific part number corresponds to the DFN6 (2x2 mm) package variant as indicated by the suffix. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure application circuits adhere to recommended capacitor values for stability. Check datasheet specifications for thermal resistance requirements based on PCB layout design.

Selection Notes

Select this component when designing circuits requiring high efficiency with minimal voltage drop across the regulator. It is suitable for applications where space is limited due to its compact surface-mount packaging. Consider the adjustable output feature if custom voltage levels are needed within the specified range. Evaluate thermal dissipation capabilities relative to the expected ambient temperature and load current.

Part Context

This component belongs to the LD39050 series of low-dropout regulators from STMicroelectronics. The series is characterized by ultra-low dropout voltage and low quiescent current, making it ideal for portable electronics. The LD39050PVR specifically denotes the version packaged in a DFN6 (2x2 mm) format, distinguishing it from other package options like the DFN6 (3x3 mm).

Replacement Considerations

Consult official STMicroelectronics documentation for verified substitute part numbers within the same product family or equivalent specifications.