Texas Instruments

LM2574M-ADJ/NOPB

LM2574M-ADJ/NOPB Description

The LM2574M-ADJ/NOPB from Texas Instruments is a monolithic buck (step-down) switching voltage regulator designed for adjustable output voltage applications. Part of the SIMPLE SWITCHER® series, it delivers 500mA output current with a wide input voltage range of 4V to 40V, making it suitable for diverse power supply designs. The adjustable output can be set from 1.23V to 37V, providing flexibility for various load requirements. Operating at a fixed switching frequency of 52kHz, it ensures stable performance with minimal external components. Packaged in a 14-pin SOIC, it is RoHS3 compliant and rated for MSL 3 (168 hours) moisture sensitivity.

LM2574M-ADJ/NOPB Features

• Adjustable Output Voltage (1.23V–37V): Enables precise voltage regulation for custom applications.
• High Efficiency (Up to 80%): Reduces power dissipation with non-synchronous buck topology.
• Wide Input Range (4V–40V): Supports industrial, automotive, and battery-powered systems.
• Low Dropout Operation: Maintains regulation even with input voltages close to the output.
• Integrated Protection: Includes thermal shutdown and current limiting for robust operation.
• Minimal External Components: Simplifies PCB design and reduces BOM cost.
• 52kHz Fixed Frequency: Minimizes EMI and simplifies filtering.

LM2574M-ADJ/NOPB Applications

• Industrial Power Supplies: Ideal for PLC, motor control, and instrumentation due to wide input tolerance.
• Automotive Systems: Suitable for infotainment, sensors, and lighting with 40V input capability.
• Battery-Powered Devices: Efficiently steps down 12V/24V batteries for microcontrollers and peripherals.
• Consumer Electronics: Powers portable devices, displays, and IoT modules with adjustable output.
• Embedded Systems: Provides stable voltage for FPGAs, ASICs, and communication modules.

Conclusion of LM2574M-ADJ/NOPB

The LM2574M-ADJ/NOPB stands out as a versatile, high-performance buck regulator with wide input range, adjustable output, and robust protection. Its low external component count and efficient operation make it ideal for space-constrained and cost-sensitive designs. Whether in industrial, automotive, or portable applications, this regulator ensures reliable power delivery while simplifying system integration. Texas Instruments’ proven SIMPLE SWITCHER® technology further enhances its appeal for engineers seeking a balance of performance and simplicity.