LM2677SX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677SX-3.3/NOPB is a high-efficiency 5A step-down voltage regulator from the SIMPLE SWITCHER family by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed output of 3.3V at up to 5A. The device features a switching frequency of 260kHz, enabling the use of small inductors and capacitors. It includes internal frequency compensation for stability and offers thermal shutdown protection. The regulator is housed in a TO-263-7 (D2PAK) surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced efficiency
• Internal frequency compensation simplifies external component selection
• Thermal shutdown protection safeguards against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic supplies
• Battery-powered systems requiring efficient step-down conversion
• Industrial control power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SX' indicates tape-and-reel packaging versus 'S' tube packaging when sourcing. Confirm RoHS compliance status via the manufacturer's latest documentation. Ensure the supplier provides valid traceability for automotive or industrial grade variants if required by the application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications needing 5A continuous current with minimal external components. The fixed 3.3V output suits standard logic levels. Consider the TO-263-7 package for adequate thermal dissipation without additional heatsinking in moderate environments. Verify input voltage does not exceed 40V maximum rating.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2677 series of SIMPLE SWITCHER regulators. It is a monolithic integrated circuit designed to provide a simple solution for step-down voltage conversion. The series is known for its ease of use due to built-in compensation and protection features, targeting general-purpose power management needs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677S-3.3/NOPB: Identical electrical specifications but differs in packaging format (tube vs. reel). LM2679S-3.3/NOPB: Similar performance but uses VSON-14 package. LM2596-ADJ/NOPB: Older technology with lower efficiency and different pinout.