STMicroelectronics

L5973AD  

DC Switching Voltage Regulators

L5973AD Description

The L5973AD from STMicroelectronics is a high-efficiency buck (step-down) switching voltage regulator designed for demanding DC-DC conversion applications. With an adjustable output voltage ranging from 1.235V to 35V and a robust 2A output current capability, this regulator is ideal for powering a wide array of electronic systems. Its wide input voltage range (4V to 36V) ensures compatibility with various power sources, including automotive, industrial, and battery-powered applications. The device operates at a 500kHz switching frequency, enabling compact designs with reduced external component sizes. Packaged in an 8HSOP (Surface Mount) form, the L5973AD is RoHS3 compliant and suitable for high-reliability applications.

L5973AD Features

• Adjustable Output Voltage (1.235V–35V): Provides flexibility for diverse load requirements.
• High Efficiency (Buck Topology): Minimizes power dissipation, improving thermal performance.
• Wide Input Range (4V–36V): Supports multiple input sources, including unregulated supplies.
• 2A Output Current: Delivers stable power for medium-power applications.
• 500kHz Switching Frequency: Reduces inductor and capacitor sizes, saving board space.
• Non-Synchronous Rectification: Simplifies design while maintaining efficiency.
• Active Product Status & REACH Unaffected: Ensures long-term availability and compliance.
• MSL 3 (168 Hours): Suitable for extended storage before assembly.

L5973AD Applications

The L5973AD excels in applications requiring compact, efficient power conversion:

• Industrial Automation: Powering sensors, PLCs, and control modules.
• Automotive Electronics: DC-DC conversion for infotainment, ADAS, and lighting systems.
• Battery-Powered Devices: Portable equipment, IoT nodes, and handheld instruments.
• Embedded Systems: Microcontroller and FPGA power supplies.
• LED Drivers: Constant-voltage LED lighting applications.

Conclusion of L5973AD

The L5973AD stands out as a versatile, high-performance buck regulator with a wide input range, adjustable output, and robust 2A current capability. Its 500kHz switching frequency and compact HSOP-8 package make it ideal for space-constrained designs. Compared to similar models, it offers better thermal performance and broader voltage flexibility, making it a preferred choice for industrial, automotive, and portable electronics. For engineers seeking a reliable, efficient, and adaptable DC-DC solution, the L5973AD delivers exceptional value.

L5973AD Documents

Download datasheets and manufacturer documentation for L5973AD

Datasheets :

L5973AD      

Reference Design Library :

EVAL5973AD: 3.3V @ 2A, 4.4 ~ 36Vin (25V Board)      

Other Related Documents :

L5973AD View All Specifications      

HTML Datasheet :

L5973AD