LD1085V18

Overview

The LD1085V18 is a positive fixed linear voltage regulator from STMicroelectronics, providing a stable 1.8V output at up to 3A. It features a maximum dropout voltage of 1.2V at full load and supports input voltages up to 30V. The device includes overcurrent and thermal overload protection. It operates within a temperature range of -40°C to 125°C and is available in TO-220 packages.

Feature Summary

• Provides high current capability of up to 3A with low dropout characteristics
• Includes internal safety mechanisms for overcurrent and thermal overload protection
• Offers a fixed positive output voltage configuration for stable power regulation

Applications

• Battery-powered systems requiring efficient voltage regulation
• Post-regulation stages for switching power supplies
• General-purpose linear regulation in embedded electronics

Procurement Notes

Verify component authenticity through authorized distributors due to obsolete status. Confirm package type matches design requirements. Check for RoHS compliance documentation. Ensure storage conditions meet moisture sensitivity level specifications. Validate replacement availability if sourcing new units is not possible.

Selection Notes

Select this regulator when a fixed 1.8V output is required with high current capacity. Consider the dropout voltage specification relative to input supply variations. Evaluate thermal management needs given the 3A output capability. Compare package options based on board space and heat dissipation requirements.

Part Context

Part of the LD1085 family of low-dropout regulators designed for applications requiring high current performance. The series offers both adjustable and fixed output versions. This specific model provides a fixed 1.8V output, distinguishing it from other variants in the lineup that offer different voltage levels or adjustability.

Replacement Considerations

LD1085DT18R