LM2672MX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2672MX-3.3 is a monolithic integrated DC-DC converter manufactured by Texas Instruments using LMDMOS technology. It functions as a step-down switching regulator capable of driving a 1A load current with excellent line and load regulation. The device operates within an input voltage range of 8V to 40V and provides a fixed output voltage of 3.3V. It utilizes a fixed internal oscillator operating at a frequency of 260kHz, which allows for the use of smaller filter components compared to lower-frequency regulators. The unit achieves high efficiency exceeding 90%, enabling thermal management primarily through printed circuit board copper traces.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated internal frequency compensation and fixed-frequency oscillator simplify design requirements.
• Includes external shutdown capability for low-power standby modes.
• Features built-in soft-start and frequency synchronization capabilities.
• Incorporates thermal shutdown and current limit protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Pre-regulator stages for post-LDO linear regulators
• Battery-powered equipment requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature rating. Ensure compatibility with required input voltage ranges and load currents. Confirm RoHS compliance status if environmental regulations apply. Cross-reference ordering information with manufacturer documentation to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust 1A buck converter is needed with minimal external parts count. The 260kHz switching frequency balances component size and efficiency effectively. Consider the wide input voltage range suitable for unregulated or variable sources. Evaluate thermal performance based on PCB copper area availability for heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2672 SIMPLE SWITCHER series, designed for high-efficiency power conversion. The series offers fixed and adjustable output versions in various packages. It represents a solution for applications requiring reliable step-down regulation without complex external control loops.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM2672 variants with different output voltages or packages. Verify functional equivalence with other 1A buck converters from alternative manufacturers if supply constraints exist.