LM4576DP-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM4576DP-ADJ is a synchronous step-down switching regulator IC manufactured by TAEJIN. It provides a positive adjustable output voltage starting from 1.23V with a maximum continuous output current of 3A. The device operates at a fixed switching frequency of 300kHz and supports an input voltage range up to 40V, delivering an adjustable output between 1.23V and 37V. It is housed in an 8-SOIC package with an exposed pad (SOP-8-EP) for improved thermal performance. The component functions within an operating temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced efficiency
• Fixed 300kHz switching frequency operation
• Adjustable output voltage capability via external resistors
• Exposed pad package design for effective heat dissipation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Battery-powered portable electronic devices
• Embedded systems requiring stable low-voltage rails
• Industrial control power supply circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer designation, as sourcing channels may list this part under HTC Korea or TAEJIN Technology. Confirm the package variant matches the SOP-8-EP specification with the exposed pad. Ensure the datasheet confirms the 300kHz switching frequency and 3A current rating, as these parameters are critical for circuit compatibility and thermal management requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, efficient buck converter is needed for applications requiring up to 3A output current. The 300kHz frequency allows for smaller passive components compared to lower-frequency alternatives. The wide input voltage range accommodates various source voltages, while the adjustable output offers flexibility for different logic levels. Consider the thermal implications of the SOP-8-EP package in high-current scenarios.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the family of 3A step-down switching regulators produced by TAEJIN. It serves as a modern alternative to older asynchronous designs by incorporating synchronous rectification. The LM4576 series typically targets cost-sensitive applications where space and efficiency are balanced constraints, differing from higher-power variants in the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with LM2576-series devices only if asynchronous topology and 52kHz frequency are acceptable trade-offs.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM4576DP-ADJ a synchronous or asynchronous regulator?

It is a synchronous step-down switching regulator, which utilizes internal MOSFETs for both high-side and low-side switching to improve efficiency.

What is the minimum output voltage for this IC?

The minimum adjustable output voltage is 1.23V.