LM2574DW-ADJR2G

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574DW-ADJR2G is a monolithic integrated circuit from the LM2574 series, functioning as a step-down (buck) switching regulator. It provides adjustable output voltages ranging from 1.23V to 37V with a maximum output current of 500mA. The device operates with an input voltage range of 4.75V to 40V and features a fixed internal switching frequency of 52kHz. Designed for high efficiency, it incorporates an internal free-wheeling diode and thermal shutdown protection. The component is housed in a 16-SOIC surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 52kHz fixed-frequency oscillator for simplified external component selection
• Includes internal free-wheeling diode to reduce external part count
• Features thermal shutdown protection for enhanced reliability under overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulators for linear post-regulator circuits
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix ADJR2G confirms the adjustable output variant and tape-and-reel packaging. Ensure the 16-SOIC footprint matches the PCB design. Confirm RoHS compliance status if required by specific manufacturing standards. Cross-reference the manufacturer date code to ensure recent production batches for optimal performance characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage between 1.23V and 37V is required at up to 500mA. It is suitable for applications needing a compact solution with minimal external components due to the integrated diode and oscillator. Consider the 16-SOIC package constraints and thermal dissipation requirements for the specific enclosure design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574 family of simple-switcher regulators, known for their ease of use and high efficiency. The DW suffix indicates the SOIC package, while ADJ denotes the adjustable output version. The R2G suffix typically specifies the reel quantity and RoHS compliance, distinguishing it from tube-packaged or non-adjustable variants within the same series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include other LM2574-ADJ variants in different packages, such as the TO-220 or DIP versions, provided thermal management is adjusted accordingly. Verify that any replacement maintains the 52kHz frequency and 500mA current rating.