LM2574HVMX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVMX-ADJ/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down switching regulator. It operates with an input voltage range of 4V to 60V and delivers up to 500mA output current. The device supports adjustable output voltages using external resistors. Key electrical parameters include a typical switching frequency of 52kHz and a quiescent current of 5mA. It is housed in a SOIC-Wide-14 package and rated for operation between -40°C and +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller and power switch for simplified design
• Adjustable output voltage capability via external feedback network
• Internal frequency compensation ensures stability with minimal external components
• Built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltage tolerance
• Pre-regulator circuits for switching regulators
• Efficient buck converters for battery-powered equipment
• Constant current driver configurations for LED loads

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's official datasheet to confirm RoHS compliance and exact pinout configuration. Ensure the ordering part number matches the required tape-and-reel packaging specifications. Cross-reference the revision history in the product data sheet to validate component updates or lifecycle status before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems with input voltages up to 60V that require a compact, low-component-count solution. The adjustable output feature provides flexibility for various load requirements. Consider the thermal performance within the SOIC-Wide-14 package and ensure adequate PCB copper area for heat dissipation given the 500mA continuous current rating and operating temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574HV series, designed for high-voltage step-down applications. It complements standard LM2574 devices by offering extended input voltage support. The family is known for simplicity and reliability in industrial and commercial power management tasks, serving as a robust alternative to more complex PWM controller designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVMX-ADJ/NOPB serves as a direct replacement for LM2574HVMX-ADJ without the NOPB suffix if lead-free compliance is not strictly mandated. For non-adjustable needs, fixed-output variants like LM2574HVMX-5.0/NOPB may be suitable substitutes within the same package.