LM2670LD-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670LD-12 is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator manufactured by National Semiconductor. It operates with an input voltage range of 8V to 40V and provides a fixed 12V output at up to 3A. The device integrates a synchronous rectifier for improved efficiency and utilizes a 260kHz switching frequency. It is housed in a 14-VSON (6x5mm) package with exposed pad, supporting junction temperatures from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification to enhance conversion efficiency compared to standard diode-based designs.
• Features internal compensation and current limit protection to minimize external component count.
• Operates at a fixed 260kHz switching frequency to allow the use of small inductors and capacitors.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 12V rails
• Battery-powered equipment with wide input voltage ranges
• Industrial control systems utilizing 24V or 48V bus architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin as National Semiconductor, noting that Texas Instruments acquired the portfolio. Confirm the specific suffix indicates the fixed 12V output variant. Ensure the package matches the 14-VSON specification. Check RoHS compliance status as legacy parts may vary. Validate the operating temperature range requirements against your application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output is required from an 8V to 40V input source. The 3A current rating suits moderate power applications. The synchronous design offers better thermal performance than non-synchronous alternatives like the LM2676. Consider the 14-VSON package size constraints during PCB layout planning.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM267x family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2676 but adds integrated synchronous rectification for higher efficiency. The LD suffix denotes the 14-VSON package type, while the -12 indicates the fixed 12V output voltage setting within the series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SDX-12/NOPB: Non-synchronous alternative with similar pinout but lower efficiency. LM2670SDX-12/NOPB: Same functional device but in VSON-14 package; verify footprint compatibility. LM2670EP-12: Enhanced plastic version with different packaging characteristics.