LM2670SD-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670SD-3.3 is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output at up to 3A. The device features a switching frequency of 260kHz, synchronous rectification for improved efficiency, and an operating junction temperature range from -40°C to +125°C. It utilizes a 14-VSON package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced power conversion efficiency
• Fixed 3.3V output configuration simplifies design implementation
• Wide 8V to 40V input voltage capability supports various supply sources

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in industrial equipment
• Power supplies for embedded systems
• Battery-powered applications requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm RoHS compliance and lead-free status. Ensure the package type matches the 14-VSON specification. Confirm the fixed 3.3V output variant is selected rather than adjustable or other voltage options. Cross-reference the manufacturer part number with official Texas Instruments documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 3A load current. It is suitable for designs needing wide input voltage tolerance up to 40V. Consider the 260kHz switching frequency for balancing component size and efficiency. Verify thermal requirements for the 14-VSON package under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2670 series of SIMPLE SWITCHER regulators. It is a synchronous buck converter designed for high efficiency. The SD suffix indicates the VSON package. The 3.3 designation specifies the fixed output voltage. It is distinct from the LM2679 series which offers higher current capabilities.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670SD-3.3/NOPB is the direct equivalent with RoHS compliance. LM2670SDX-3.3/NOPB may be available in reel packaging. Check pinout compatibility before substituting with non-TI equivalents.