STMicroelectronics

LD1085V

LD1085V Description

The LD1085V from STMicroelectronics is a high-performance, 3A adjustable positive linear voltage regulator designed for demanding power management applications. With an input voltage range up to 30V and an adjustable output voltage from 1.25V to 28.5V, it offers exceptional flexibility for various circuit designs. The device features a low dropout voltage of 1.5V at 3A, ensuring efficient operation even with minimal headroom. Its 72dB PSRR (120Hz) and 10mA quiescent current make it ideal for noise-sensitive applications. Packaged in a TO-220 through-hole format, the LD1085V is robust and suitable for industrial environments.

LD1085V Features

• High Output Current: Delivers up to 3A with stable performance.
• Wide Adjustable Output Range: 1.25V to 28.5V for versatile design needs.
• Low Dropout Voltage: 1.5V @ 3A maximizes efficiency in low-headroom scenarios.
• Excellent Noise Rejection: 72dB PSRR minimizes ripple in sensitive circuits.
• Built-in Protections: Over-current and over-temperature safeguards enhance reliability.
• RoHS3 Compliant & REACH Unaffected: Meets stringent environmental standards.
• Through-Hole Mounting (TO-220): Simplifies heat dissipation and mechanical stability.

LD1085V Applications

The LD1085V is ideal for:

• Power supplies for industrial control systems, test equipment, and instrumentation.
• Voltage regulation in automotive electronics, where stable power is critical.
• Embedded systems requiring low-noise, high-current rails (e.g., FPGA/ASIC power).
• Audio amplifiers and precision analog circuits benefiting from high PSRR.
• Retrofit designs replacing older linear regulators with higher efficiency.

Conclusion of LD1085V

The LD1085V stands out as a high-current, low-dropout linear regulator with superior noise immunity and robust protection features. Its wide adjustable output range and TO-220 packaging make it a versatile choice for industrial, automotive, and precision analog applications. Compared to similar models, its 72dB PSRR and 3A output capability offer a competitive edge in noise-sensitive, high-load scenarios. For engineers seeking reliability and performance in linear regulation, the LD1085V is a compelling solution.