LD1086PUR

Overview

The LD1086PUR is a positive low-dropout linear voltage regulator from STMicroelectronics, capable of delivering up to 1.5 A of output current. It features an adjustable output voltage range and operates with a maximum input voltage of 30 V. The device includes internal overcurrent protection and thermal shutdown for robust performance. It is housed in a TO-220-3 package suitable for through-hole mounting. Key electrical specifications include a typical dropout voltage of 1.3 V at full load, a quiescent current of 5 mA, and line/load regulation values of 10 mV and 20 mV respectively.

Feature Summary

• Provides stable positive voltage regulation with high output current capability
• Incorporates internal overcurrent limiting and thermal shutdown protection mechanisms
• Designed for low dropout operation to maximize efficiency under varying load conditions

Applications

• General-purpose power supply circuits requiring regulated DC voltage
• Battery-powered systems needing efficient voltage conversion
• Embedded electronics requiring stable logic or analog supply rails

Procurement Notes

Verify the specific manufacturer part number against official STMicroelectronics documentation to ensure authenticity and correct pinout configuration. Confirm that the procurement source provides valid traceability and compliance certificates such as RoHS status. Check for any recent product change notifications regarding packaging or material composition updates before finalizing orders.

Selection Notes

Select this component when a fixed or adjustable positive LDO with 1.5 A capacity is required. Ensure the input voltage does not exceed 30 V and consider the thermal dissipation capabilities of the TO-220-3 package. Verify that the desired output voltage falls within the adjustable range specified in the datasheet. Evaluate the dropout voltage requirements against the available input-output differential.

Part Context

This component belongs to the LD1086 series of low-dropout regulators manufactured by STMicroelectronics. The series is designed for applications requiring high current delivery with minimal voltage loss. The PUR suffix typically denotes the TO-220-3 through-hole package variant, distinguishing it from surface-mount options like the DT or D2PAK packages within the same functional family.

Replacement Considerations

Compatible substitutes include other 1.5 A positive LDOs from various manufacturers, provided they match the pinout and voltage/current ratings. Direct replacements within the STMicroelectronics portfolio may include other LD1086 variants with different package styles if board layout allows.