LM2673SX-5.0/NOPB

$4.13

Description：IC REG BUCK 5V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:882ef7e6243c Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2673SX-5.0/NOPB is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BUCK 5V 3A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2673SX-5.0/NOPB

Description：IC REG BUCK 5V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：8V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：5V
Voltage - Output (Max)：-
Current - Output：3A
Frequency - Switching：260kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package：TO-263 (DDPAK-7)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2673SX-5.0/NOPB

LM2673SX-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SX-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator featuring a fixed 5V output and 3A maximum current capability. It operates from an input voltage range of 8V to 40V with a switching frequency of 260kHz. The device utilizes a TO-263-7 (PowerPAD) surface-mount package, supports junction temperatures up to 125°C, and includes integrated thermal shutdown and adjustable current limiting for robust protection in compact power designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated high-side switch eliminates the need for external Schottky diodes
Internal compensation simplifies external component selection
Adjustable current limit protects against short circuits and overloads

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for embedded systems
Battery-powered equipment requiring efficient step-down conversion
Industrial control system power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'SX' corresponds to the TO-263-7 PowerPAD package variant rather than standard TO-263 or other packages. Confirm the 'NOPB' designation indicates lead-free and RoHS compliance. Ensure the specific distributor listing matches the fixed 5.0V output version to avoid confusion with adjustable variants.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output at 3A is required in a surface-mount format. The 260kHz frequency allows for smaller passive components compared to lower-frequency regulators. Verify that the TO-263-7 package provides adequate thermal dissipation for the expected load conditions without excessive heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 SIMPLE SWITCHER family, designed for high-efficiency buck conversion. It shares core architecture with other members like the LM2673T and LM2673SD but differs in package type. The SX suffix specifically denotes the TO-263-7 PowerPAD footprint, distinguishing it from through-hole or DFN alternatives within the same electrical specification group.