STMicroelectronics

A5975D

A5975D Description

The A5975D from STMicroelectronics is an adjustable 3A buck switching voltage regulator designed for high-efficiency step-down DC-DC conversion. With a wide input voltage range of 4V to 36V and an adjustable output voltage from 1.235V to 35V, it provides flexibility for diverse power supply designs. This automotive-grade IC operates at a 250kHz switching frequency, balancing efficiency and component size. Packaged in an 8HSOP (Surface Mount), it is suitable for compact PCB layouts. Though marked as obsolete, it remains a robust choice for legacy systems requiring high current and wide input tolerance.

A5975D Features

• High Current Output: Delivers up to 3A with stable performance.
• Wide Input Range: Supports 4V to 36V, ideal for automotive and industrial applications.
• Adjustable Output: Configurable from 1.235V to 35V via external resistors.
• Automotive Compliance: Meets AEC-Q100 standards, ensuring reliability in harsh environments.
• Non-Synchronous Rectification: Simplifies design while maintaining efficiency.
• 250kHz Switching: Reduces inductor size without excessive switching losses.
• ROHS3 & REACH Compliant: Environmentally friendly and globally accepted.

A5975D Applications

• Automotive Systems: Power modules for infotainment, sensors, and lighting.
• Industrial Power Supplies: Efficient voltage regulation for PLCs and motor drives.
• Battery-Powered Devices: Portable equipment requiring wide input ranges.
• Legacy Electronics: Maintenance or upgrades for existing designs needing high-current buck conversion.

Conclusion of A5975D

The A5975D is a versatile, high-performance buck regulator suited for demanding applications requiring wide input ranges and high current output. Its automotive-grade reliability, adjustable output, and compact form factor make it ideal for both industrial and vehicular systems. While obsolete, its proven design ensures continued utility in legacy or long-lifecycle projects. Engineers seeking a robust, no-frills switching regulator will find the A5975D a dependable solution.