LD1085DT15R

Overview

The LD1085DT15R is a positive fixed linear low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.5V with a maximum continuous output current of 3A. The device features a maximum input voltage rating of 30V and supports a junction temperature range from -40°C to +125°C. Key electrical parameters include a maximum dropout voltage of 1.5V at full load, a typical quiescent current of 10mA, and a power supply rejection ratio (PSRR) of 72dB at 120Hz. It is housed in a DPAK surface-mount package.

Feature Summary

• Integrated overcurrent and thermal shutdown protection mechanisms for enhanced operational safety.

Applications

• Battery-powered portable electronic devices requiring efficient voltage regulation.

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status prior to procurement, as manufacturing records indicate potential variations in environmental compliance across different production batches. Confirm that the component meets all necessary regulatory standards for the intended deployment region. Ensure compatibility with existing thermal management designs given the high current capability and package constraints.

Selection Notes

Select this component when a stable 1.5V rail is required for loads up to 3A in space-constrained applications. The DPAK package offers a balance between thermal performance and board area efficiency. Consider the 1.5V dropout voltage under maximum load conditions to ensure sufficient input-to-output differential is maintained during operation.

Part Context

This part belongs to the LD1085 family of high-current LDO regulators designed for general-purpose power management. The 'DT' suffix indicates the DPAK surface-mount packaging variant, while the trailing 'R' typically denotes tape-and-reel packaging for automated assembly processes.

Replacement Considerations

LT1085IT-1.5#PBF