LM2673LD-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673LD-12 is a fixed-output buck switching regulator IC from the SIMPLE SWITCHER® series, manufactured by National Semiconductor. It provides a fixed 12V output with a maximum current capacity of 3A. The device operates within an input voltage range of 8V to 40V and features a switching frequency of 260kHz. It utilizes pulse width modulation control and is housed in a 14-VSON (6x5) package with a bare pad for thermal dissipation. The component supports surface mount installation and functions as a non-synchronous rectifier.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-current power switch capable of delivering up to 3A load current
• Fixed 12V output configuration simplifies design without external feedback resistors
• Built-in thermal shutdown protection ensures reliability under overload conditions
• Compact 14-pin VSON package facilitates efficient heat transfer via exposed pad

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring stable 12V supply
• Industrial control modules operating within 8V to 40V input ranges
• Telecommunications equipment power distribution units
• Automotive electronics subsystems compatible with wide input voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or certified suppliers due to discontinued status. Confirm package marking matches the 14-VSON specification. Check for lead-free compliance if required by specific environmental regulations, noting the part may not meet current RoHS standards. Ensure storage conditions prevent moisture damage prior to reflow soldering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output at 3A is required from an 8V to 40V input source. Consider the 260kHz switching frequency for balancing component size and efficiency. Evaluate thermal management requirements given the 14-VSON package's reliance on board copper for heat dissipation. Compare against adjustable variants if flexible output voltage is needed instead of the fixed 12V option.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 family of simple switcher regulators, designed for straightforward DC-DC conversion applications. It shares architectural similarities with other members like the LM2676 but offers a fixed 12V output variant. The series emphasizes ease of use with minimal external components, targeting designers seeking reliable power solutions without complex compensation networks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, equivalent replacements must be identified based on matching electrical parameters such as 3A output, 12V fixed setting, and 40V max input rating.