Regulador step-down Texas Instruments LM2574 HVM-5.0 – saída fixa de 5,0 V, entrada 4–60 V, caixa SO-14W

The Texas Instruments LM2574 HVM-5.0 is a fixed 5.0 V step-down (buck) switching regulator designed to deliver a regulated 5 V output from input voltages between 4 V and 60 V. Packaged in an SO-14W form factor, this regulator is intended for power management in automotive, industrial and embedded systems where a wide input-voltage range and compact board footprint are required. The device uses switching regulation topology to provide efficient voltage conversion and stable output suitable for powering microcontrollers, sensors and peripheral circuitry.

Advantages

The LM2574 HVM-5.0 offers a wide input-voltage range and a fixed, accurate 5 V output that simplifies power-supply design by eliminating the need for external voltage-setting resistors. Its switching regulator architecture improves conversion efficiency compared with linear regulators, reducing heat dissipation in many use cases. The SO-14W package provides a compact, through-hole-compatible mounting option for applications that require robust mechanical connection and ease of assembly.

Suitable for

• Automotive power modules and accessory circuits requiring regulated 5 V from vehicle battery ranges.
• Industrial control systems and instrumentation with wide input-voltage sources.
• Embedded systems and single-board computers where a compact 5 V supply is needed.
• Sensor and peripheral power rails in distributed electronics and IoT nodes.

Key specifications

• Output voltage: fixed 5.0 V
• Input voltage range: 4 V to 60 V
• Topology: step-down (buck) switching regulator
• Package type: SO-14W (through-hole compatible)
• Intended use: regulated 5 V power rail for automotive, industrial and embedded applications

How to use

Install the LM2574 HVM-5.0 on a PCB following recommended pinout and layout practices for switching regulators, including placement of input and output capacitors close to the device and use of proper ground returns to minimize noise. Provide an input supply within the specified 4–60 V range and ensure the external inductor, diode and capacitors meet the current and voltage ratings for the intended load. Observe manufacturer thermal guidance to keep junction temperature within safe limits during operation.

Recommendations

For reliable operation, use low-ESR capacitors on the input and output, select an inductor with appropriate current rating and low DC resistance, and follow recommended PCB trace widths for power paths. Verify transient response and stability with the intended load profile and include adequate filtering if the application is sensitive to switching noise.