LM2670SX-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670SX-5.0/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 5V output at up to 3A. The device integrates a synchronous switch for improved efficiency and features a 260kHz switching frequency. It includes thermal shutdown, current limit protection, and operates within a -40°C to +125°C junction temperature range in a TO-263-7 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous rectifier switch to enhance conversion efficiency compared to standard diode-based designs.
• Includes comprehensive protection mechanisms such as thermal shutdown and adjustable current limiting to safeguard the device under fault conditions.
• Utilizes a fixed-frequency current-mode control architecture to simplify external component selection and ensure stable loop response.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 5V rails
• Battery-powered equipment input stage conditioning
• General-purpose DC/DC conversion in industrial control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix /NOPB to confirm lead-free status and RoHS compliance. Confirm the specific tape-and-reel quantity matches your assembly requirements. Ensure the TO-263-7 footprint aligns with your PCB layout guidelines before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required with up to 3A load capability. It is suitable for designs needing high efficiency without complex feedback networks. Consider the TO-263-7 package for adequate thermal dissipation in space-constrained applications where surface mounting is preferred over through-hole solutions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM267x family of SIMPLE SWITCHER regulators, which are designed for ease of use and high performance. The LM2670 variant specifically offers 3A output current, distinguishing it from higher-current siblings like the LM2677 or lower-current alternatives. It represents a mature solution for standard 5V distribution tasks in mixed-signal environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements within the same series include LM2670S-5.0/NOPB. Verify that any substitute maintains the 3A current rating and 260kHz switching frequency to ensure circuit stability and thermal performance remain unchanged.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM2670SX-5.0/NOPB include a built-in synchronous rectifier?

Yes, the device integrates a synchronous switch to replace the external catch diode, improving overall efficiency.

What is the maximum input voltage for this regulator?

The maximum input voltage supported by the LM2670SX-5.0/NOPB is 40V.