LM2670SD-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670SD-5.0/NOPB is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It delivers a fixed 5 V output with a maximum current capability of 3 A. The device accepts an input voltage range from 8 V to 40 V and utilizes a VSON-14 package for surface-mount installation. Designed for robust performance, it supports junction temperatures up to +125 °C and includes internal features such as a 4.2 mA typical quiescent current and integrated protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced conversion efficiency
• Fixed 260 kHz switching frequency minimizes external component size
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance when sourcing. Confirm the SD package variant matches your PCB footprint requirements. Ensure the fixed 5.0 V output version aligns with system voltage needs, as adjustable variants exist within the same family. Cross-reference datasheet revisions for any pinout or electrical parameter updates before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a compact 3 A buck solution with synchronous rectification. The fixed 5 V output simplifies design compared to adjustable versions. Consider the 260 kHz frequency for balancing efficiency and passive component size. Verify that the 40 V maximum input rating suits the source voltage environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM267x SIMPLE SWITCHER family, which provides high-efficiency step-down regulation. The LM2670 specifically offers 3 A output current, distinguishing it from the 5 A LM2677/2678 series. The SD package denotes a small outline dual flat no-lead form factor suitable for space-constrained layouts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670SD-5.0/NOPB serves as the direct lead-free replacement for the older LM2670SD-5.0. For higher current needs, consider the LM2677SD-5.0/NOPB (5 A). For lower current requirements, the LM2673SD-5.0/NOPB (3 A) is available but lacks synchronous rectification.