LM2670T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670T-5.0/NOPB is a SIMPLE SWITCHER® step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.5V to 42V and provides a fixed 5V output at up to 3A load current. The device integrates a 1.2A/3.5A internal power switch and operates at a switching frequency of 525kHz. Key features include adjustable switching frequency, frequency synchronization capability, and thermal shutdown protection. It is housed in a PowerPAD™ TO-220 package for efficient heat dissipation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency internal power switch rated for 1.2A or 3.5A operation
• Supports adjustable switching frequency and external clock synchronization
• Includes comprehensive protection mechanisms such as thermal shutdown and current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems operating from 12V or 24V buses

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status. Confirm the 'T' designation corresponds to the TO-220 through-hole package variant. Ensure the '-5.0' suffix matches the required 5V fixed output voltage. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate availability and revision history.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage ranging up to 42V. The 3A current capacity suits moderate power applications. The TO-220 package is suitable for designs prioritizing thermal performance over board space. Consider the 525kHz default frequency for balancing component size and efficiency.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2670 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2673 and LM2678 series but differs in switching frequency and current ratings. The LM2670 specifically offers frequency synchronization, distinguishing it from non-synchronous counterparts in the broader buck converter portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible alternatives within the same family include the LM2670T-ADJ/NOPB for adjustable output. For higher current requirements, consider the LM2678 series. Verify that any substitute maintains the 42V maximum input rating and compatible thermal characteristics.