LD1086BV-DG

Overview

The LD1086BV-DG is a positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It belongs to the LD1086 series and provides an output current capability of up to 1.5 A. The device features a fixed output voltage of 3.3 V with a typical dropout voltage of 1.3 V at maximum load. It operates within an input voltage range of 2.85 V to 30 V and maintains a quiescent current of approximately 5 mA. The unit supports a wide operating temperature range from -40 °C to +125 °C and utilizes a TO-220-3 through-hole package.

Feature Summary

• Provides stable regulated power with low dropout characteristics for efficient voltage conversion
• Integrates internal thermal overload and short-circuit protection mechanisms for robust operation
• Ensures high line and load regulation accuracy with tight output voltage tolerance

Applications

• General-purpose power supply circuits requiring stable 3.3 V rails
• Battery-powered systems utilizing low-dropout performance
• Industrial control modules and embedded computing platforms

Procurement Notes

Verify the specific suffix 'DG' against the official manufacturer datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure the ordering code matches the required lead-free and RoHS compliance standards. Cross-reference the part number with authorized distributors to confirm current availability status and authenticity before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.3 V output is required with high current capacity in a through-hole configuration. Consider the thermal dissipation capabilities inherent to the TO-220 package for heat management. Evaluate the input-to-output voltage differential to ensure it remains within the specified dropout limits under all expected load conditions.

Part Context

This regulator is part of the broader LD1086 family, which includes adjustable versions and other fixed voltage options such as 1.8 V, 5 V, and 2.5 V variants. The series is designed to replace older three-terminal adjustable regulators while offering superior dropout performance and efficiency. It serves as a reliable solution for power management in various electronic applications requiring stable DC voltage sources.

Replacement Considerations

Compatible replacements include other LD1086 series parts with matching voltage ratings or pin-compatible LDO regulators from the same manufacturer. Verify that substitute components maintain identical output current capabilities and package dimensions to ensure seamless integration into existing circuit designs without modification.