LM4576R-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM4576R-ADJ is a monolithic integrated circuit functioning as a step-down switching regulator. It provides all active functions for buck converter applications, capable of driving a 3A load with excellent line and load regulation. The device operates from an input voltage range of 8V to 40V (maximum 45V) and delivers a positive adjustable output voltage starting at 1.23V up to 37V. It utilizes a fixed switching frequency of 300kHz. The component is housed in a TO-263-5 (D2PAK) surface-mount package and supports an operating temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic design providing complete active functions for buck conversion
• Capable of delivering high current loads up to 3A
• Features excellent line and load regulation performance
• Supports wide input voltage ranges with adjustable output capabilities

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear regulators
• Battery-powered systems requiring efficient step-down conversion
• General-purpose power supply designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer designation, as TAEJIN Technology may produce variants under HTC Korea branding. Confirm the package type matches the required TO-263-5 footprint. Ensure the adjustable version suffix aligns with circuit requirements. Check datasheet revisions for any changes in thermal characteristics or electrical limits before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust 3A buck converter solution is required. The adjustable output allows flexibility for various voltage rails. Consider the 300kHz switching frequency for balancing efficiency and external component size. Verify that the thermal performance of the TO-263-5 package meets the application's heat dissipation needs under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM4576 series of switching regulators. The series includes fixed voltage options such as 3.3V, 5.0V, 12V, and 15V, alongside the adjustable variant. These devices are designed for high-efficiency power management in compact form factors. The R suffix typically indicates a specific package configuration within the product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other 3A adjustable buck converters in similar packages. Cross-reference pinouts carefully when replacing with generic equivalents. Ensure input voltage and current ratings meet or exceed original specifications.