LM2574DW-ADJR2

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574DW-ADJR2 is a monolithic integrated circuit step-down switching regulator from the LM2574 series, manufactured by onsemi. It operates with an input voltage range of 4.75V to 40V and provides an adjustable output voltage between 1.23V and 37V. The device supports a maximum output current of 0.5A and utilizes a fixed internal switching frequency of 52kHz. Designed for high efficiency, it achieves up to 90% efficiency in buck converter applications. The component is housed in a 16-pin SOIC Wide (SOICW) surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic design simplifies step-down switching regulator construction
• Fixed internal oscillator eliminates external timing components
• Built-in thermal shutdown protects against overheating conditions
• Adjustable output voltage capability via external resistor network

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear regulators
• Efficient battery-powered system power supplies
• General-purpose buck converter circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as per latest datasheet revisions. Check for obsolescence notices since some sources indicate this specific tape-and-reel variant may be discontinued. Ensure proper ESD handling during storage and assembly processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a compact surface-mount solution is required for moderate current applications. The adjustable output version offers flexibility for non-standard voltage requirements. Consider the 52kHz switching frequency for trade-offs between component size and electromagnetic interference. Verify that the 0.5A current limit meets the load demands without excessive heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2574 family of simple-switcher regulators. Unlike the through-hole LM2574N variants, this DW suffix indicates a surface-mount SOICW package. The ADJ suffix denotes the adjustable output voltage configuration, distinguishing it from fixed-voltage versions like the 5V or 12V outputs found in other series members.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official onsemi lifecycle management documents for end-of-life notifications or recommended alternative devices within the same product family.