Texas Instruments

LM2574N-12/NOPB  

DC Switching Voltage Regulators

LM2574N-12/NOPB Description

The LM2574N-12/NOPB is a fixed 12V output, 500mA step-down (buck) switching voltage regulator from Texas Instruments' SIMPLE SWITCHER® series. Designed for through-hole (DIP-8) mounting, it efficiently converts an input voltage range of 4V to 40V to a stable 12V output with a switching frequency of 52kHz. This monolithic IC integrates a high-efficiency buck converter, reducing external component count and simplifying design. It is RoHS3 compliant, REACH unaffected, and suitable for industrial, automotive, and consumer applications requiring reliable, compact power conversion.

LM2574N-12/NOPB Features

• Wide Input Range (4V–40V): Supports diverse power sources, including unregulated AC/DC adapters or batteries.
• Fixed 12V Output: Eliminates feedback circuitry, reducing design complexity.
• High Efficiency (Up to 80%): Minimizes heat dissipation with non-synchronous rectification.
• Low Standby Current (50µA typ.): Ideal for battery-operated devices.
• Built-in Protection: Includes thermal shutdown and current limiting for robust operation.
• 52kHz Switching Frequency: Balances efficiency and noise, compatible with small inductors.
• MSL 1 (Unlimited): No moisture sensitivity concerns for long-term storage.

LM2574N-12/NOPB Applications

• Industrial Systems: Power supplies for PLCs, sensors, and control modules.
• Automotive Electronics: Auxiliary power for infotainment or telematics (within non-safety-critical systems).
• Consumer Devices: Battery chargers, set-top boxes, and small appliances.
• Embedded Systems: Microcontroller and FPGA power rails in low-to-medium power designs.
• LED Drivers: Constant-voltage LED arrays or signage.

Conclusion of LM2574N-12/NOPB

The LM2574N-12/NOPB excels in simplicity, efficiency, and reliability, making it a preferred choice for 12V step-down conversion in space-constrained or cost-sensitive designs. Its wide input range, integrated protections, and low standby current distinguish it from linear regulators and complex switchers. Whether for industrial, automotive, or consumer applications, this regulator delivers a compact, high-performance solution with minimal external components. Texas Instruments' proven SIMPLE SWITCHER® architecture ensures ease of use without compromising performance.

LM2574N-12/NOPB Documents

Download datasheets and manufacturer documentation for LM2574N-12/NOPB

PCN Assembly/Origin :

Assembly Site 17/Dec/2021      

Datasheets :

LM2574 Series Datasheet      

PCN Design/Specification :

Mold Compound Updated 10/Jul/2014       LM2574/LM2574HV 05/Sep/2018