LD1085D2M-R Linear Voltage Regulator - Adjustable 3A Output, D2PAK-3 Package

STMicroelectronics LD1085D2M-R: High-Performance Adjustable Linear Voltage Regulator

For engineers and designers seeking reliable power management solutions, the LD1085D2M-R from STMicroelectronics emerges as a versatile linear voltage regulator engineered to deliver precise adjustable output with exceptional stability. This advanced regulator combines robust performance characteristics with comprehensive protection features, making it ideal for demanding applications in industrial, automotive, and embedded systems environments.

Key Technical Advantages

At its core, the LD1085D2M-R offers a remarkable 3A output current capacity while maintaining a low dropout voltage of just 1.5V at full load. This combination enables efficient power delivery in applications where thermal management and energy conservation are critical. The regulator's adjustable output spans an impressive range from 1.25V to 28.5V, providing design flexibility for various voltage regulation requirements.

Engineered with STMicroelectronics' advanced semiconductor technology, this device accepts input voltages up to 30V while maintaining exceptional line and load regulation. Its built-in 72dB power supply rejection ratio (PSRR) at 120Hz ensures stable output even in electrically noisy environments, while the 10mA quiescent current draw supports energy-efficient operation during standby modes.

Comprehensive Protection Architecture

Designed for real-world applications, the LD1085D2M-R incorporates multiple safety mechanisms to ensure long-term reliability. Integrated over-current and over-temperature protection circuits automatically safeguard the device against fault conditions without requiring external components. These features make it particularly suitable for automotive applications where thermal cycling and electrical transients are common.

Industrial-Grade Packaging

Housed in a surface-mount D2PAK-3 package, this regulator offers excellent thermal dissipation characteristics while maintaining compatibility with automated PCB assembly processes. The robust TO-263AA footprint ensures reliable mechanical stability and thermal performance in both prototyping and mass production scenarios.

Application Versatility

The LD1085D2M-R's combination of high current capability, wide adjustment range, and industrial temperature tolerance makes it suitable for diverse applications including:

• Industrial control systems and PLCs
• Automotive power supplies
• Telecom infrastructure equipment
• Medical electronics
• High-precision instrumentation

Its adjustable architecture allows designers to implement customized voltage rails without requiring multiple fixed regulators, reducing BOM complexity and inventory requirements.

Design Considerations

When implementing the LD1085D2M-R in circuit designs, engineers should consider the thermal management requirements associated with its D2PAK-3 package. Proper PCB copper layout and heatsinking provisions are recommended to maximize its performance capabilities at higher current levels. The device's stability characteristics have been optimized for standard ceramic output capacitors, simplifying the overall design process.

As part of STMicroelectronics' comprehensive power management portfolio, the LD1085D2M-R delivers proven performance backed by a globally recognized semiconductor manufacturer's quality standards. Its availability in tape-and-reel packaging supports scalable manufacturing requirements while maintaining strict parametric specifications across production batches.

Tags: Power Management, Voltage Regulation, STMicroelectronics, Industrial Electronics, Automotive Components