LM2670S-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670S-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. The device integrates a synchronous switch for improved efficiency and includes a 260kHz switching frequency. It features thermal shutdown, current limit protection, and a 1.2V reference voltage. The component is housed in a D2PAK (TO-263) surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous rectifier switch to enhance conversion efficiency compared to traditional diode-based designs.
• Includes comprehensive protection mechanisms such as thermal shutdown and adjustable current limiting to ensure operational safety under fault conditions.
• Utilizes a fixed 260kHz switching frequency to minimize the required size of external inductors and capacitors.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 3.3V rails
• Battery-powered equipment utilizing higher voltage sources
• Industrial control systems needing efficient DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix codes on the datasheet to confirm the exact package type and temperature rating. Ensure the ordering part number matches the required pin configuration and lead finish specifications provided by Texas Instruments. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance status and any recent product change notices affecting this specific variant.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an input voltage between 8V and 40V. It is suitable for applications demanding up to 3A continuous load current with high efficiency. Consider the D2PAK package for its thermal performance and ease of soldering in surface-mount assembly processes compared to smaller packages.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM267x series of SIMPLE SWITCHER regulators, which are designed for high-efficiency step-down conversion. The series offers various output voltage options and current ratings. The LM2670 specifically targets 3A applications, providing a robust solution for power management in space-constrained environments while maintaining stable output regulation across wide input voltage ranges.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2670S-3.3/NOPB and LM2670SD-3.3/NOPB. Verify that alternative parts maintain the same 3.3V fixed output, 3A current capability, and compatible package dimensions for direct replacement without PCB redesign.