Texas Instruments

LM5575MH

LM5575MH Description

The LM5575MH from Texas Instruments is a versatile 1.5A adjustable buck regulator designed for high-voltage DC-DC conversion applications. Part of the SIMPLE SWITCHER® series, it features a wide 6V to 75V input range and delivers an adjustable output from 1.225V to 70V, making it ideal for industrial, automotive, and telecom systems requiring robust power management. Its 50kHz to 500kHz switching frequency allows for flexibility in design optimization, balancing efficiency and component size. Packaged in a 16-pin HTSSOP and rated for surface-mount assembly, the LM5575MH combines high performance with ease of integration.

LM5575MH Features

• Wide Input Range (6V–75V): Supports high-voltage applications, including transient-prone environments like automotive systems.
• Adjustable Output (1.225V–70V): Precision feedback enables tailored voltage regulation for diverse loads.
• 1.5A Continuous Output Current: Suitable for moderate-power applications without external FETs.
• Frequency Adjustability (50kHz–500kHz): Optimizes efficiency and reduces EMI through frequency tuning.
• Non-Synchronous Buck Topology: Simplifies design while maintaining high efficiency (up to 90%).
• Robust Protections: Includes thermal shutdown, current limiting, and undervoltage lockout (UVLO).
• RoHS3 & REACH Compliant: Meets environmental and safety standards for global deployment.

LM5575MH Applications

The LM5575MH excels in:

• Industrial Power Supplies: For PLCs, motor controllers, and factory automation systems requiring stable high-voltage conversion.
• Automotive Electronics: Powers infotainment, ADAS, and lighting systems with tolerance for load-dump transients.
• Telecom/Networking Equipment: Provides efficient step-down conversion for routers, switches, and base stations.
• Battery-Powered Systems: Ideal for 12V/24V battery management due to low quiescent current and wide input range.

Conclusion of LM5575MH

The LM5575MH stands out as a reliable, high-voltage buck regulator with exceptional flexibility and robustness. Its wide input range, adjustable output, and frequency programmability make it a superior choice for demanding applications in automotive, industrial, and telecom sectors. While classified as Last Time Buy, its proven performance and TI’s SIMPLE SWITCHER® pedigree ensure long-term viability for legacy designs. Engineers seeking a cost-effective, high-performance solution for moderate-current DC-DC conversion will find the LM5575MH an optimal fit.