STMicroelectronics

LD1086D2M33  

Linear & Switching Voltage Regulators

LD1086D2M33 Description

The LD1086D2M33 from STMicroelectronics is a fixed 3.3V, 1.5A low-dropout (LDO) linear voltage regulator designed for high-performance power management applications. Housed in a D2PAK-3 (TO-263) surface-mount package, this regulator offers robust thermal dissipation and is suitable for demanding environments. With a wide input voltage range up to 30V and a low dropout voltage of 1.5V at full load (1.5A), it ensures stable power delivery even under fluctuating input conditions. The device features high PSRR (79dB at 120Hz), minimizing noise interference in sensitive circuits. Though marked as obsolete, it remains a reliable choice for legacy designs requiring high-current, low-noise regulation.

LD1086D2M33 Features

• Fixed 3.3V Output: Precision-regulated voltage for stable power supply.
• High Current Capacity: Delivers 1.5A continuous current, ideal for power-hungry applications.
• Low Dropout Voltage: 1.5V dropout at 1.5A maximizes efficiency in low-input scenarios.
• Robust Protection: Includes over-current and over-temperature protection for enhanced reliability.
• High PSRR (79dB): Superior noise rejection for sensitive analog/digital circuits.
• Wide Input Range (Up to 30V): Accommodates varying input sources.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.
• Low Quiescent Current (10mA): Balances performance and power efficiency.

LD1086D2M33 Applications

• Industrial Power Systems: Suitable for PLCs, motor controllers, and automation equipment requiring stable 3.3V rails.
• Embedded Computing: Powers microcontrollers, FPGAs, and DSPs in harsh environments.
• Automotive Electronics: Used in infotainment, sensors, and ECUs (where legacy designs persist).
• Telecom Infrastructure: Provides clean power for RF modules and baseband processing.
• Test & Measurement Equipment: Ensures low-noise supply for precision analog circuits.

Conclusion of LD1086D2M33

The LD1086D2M33 excels in high-current, low-noise applications with its low dropout, high PSRR, and robust protection features. While obsolete, its D2PAK-3 package and 30V input tolerance make it a durable choice for legacy or long-lifecycle designs. Engineers seeking a reliable 3.3V LDO for industrial, automotive, or telecom systems will find this regulator a proven solution despite newer alternatives.

LD1086D2M33 Documents

Download datasheets and manufacturer documentation for LD1086D2M33

Datasheets :

LD1086      

HTML Datasheet :

LD1086