LM2670S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670S-12/NOPB is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator from Texas Instruments. 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 0.5A, 40V rated switch and operates at a fixed switching frequency of 260kHz. It features current limit protection, thermal shutdown, and a low quiescent current of 4.2mA. The component is housed in a TO-263 (D2PAK) package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5A, 40V rated power switch for simplified design
• Fixed 260kHz switching frequency allows use of small external components
• Includes comprehensive protection against overcurrent and excessive temperature

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• On-board DC/DC conversion for telecommunications systems
• High-efficiency step-down power supplies for embedded controllers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '12' confirms the fixed 12V output variant. Confirm the 'S' indicates the TO-263 package and 'NOPB' denotes lead-free/RoHS compliance. Cross-reference the manufacturer part number with official datasheets to ensure compatibility with existing board layouts and thermal requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an 8V to 40V input source. It is suitable for applications needing up to 3A continuous load current with minimal external component count. Consider the TO-263 package for its thermal performance in space-constrained designs requiring moderate heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM267x family of SIMPLE SWITCHER regulators, which are designed for high efficiency and ease of implementation. The LM2670 series specifically targets 3A applications, offering a balance between performance and component size compared to higher or lower current variants within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670S-12/NOPB is functionally equivalent to LM2670S-12. Check for updated revisions such as LM2670S-12/NOPB vs older National Semiconductor versions to ensure pinout and electrical specifications remain identical.