LM2677SDX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677SDX-3.3/NOPB is a SIMPLE SWITCHER® high-efficiency 5A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output. The device integrates a 1.1A/5A power switch and features a switching frequency of 260kHz. It utilizes the TO-263-7 (D2PAK) package for surface-mount installation. The regulator supports operation from -40°C to +125°C, includes thermal shutdown, and draws a typical quiescent current of 4.2mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a robust internal power switch capable of delivering up to 5A load current.
• Utilizes constant-frequency pulse-width modulation architecture for stable regulation.
• Incorporates comprehensive protection mechanisms including thermal shutdown and current limiting.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power supply architectures
• High-current battery-powered systems requiring efficient step-down conversion
• Industrial control systems operating within wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout compatibility and electrical characteristics. Ensure the ordering part number matches the required package style and temperature rating. Cross-reference manufacturer documentation to validate RoHS compliance status and lead-free specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output at 5A is required from an 8V to 40V input source. Consider the TO-263-7 package for its thermal performance in high-current applications. Evaluate the 260kHz switching frequency against external component size constraints and electromagnetic interference requirements relative to other family members.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM267x SIMPLE SWITCHER family of monolithic integrated step-down DC/DC converters. The family offers various fixed output voltages and adjustable versions to suit diverse power management needs. These regulators are designed to simplify power supply design while maintaining high efficiency and reliability across industrial and commercial environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677S-3.3/NOPB: Identical electrical specifications in a different physical package configuration.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage supported by the LM2677SDX-3.3?

The device supports a maximum input voltage of 40V.

Does the LM2677SDX-3.3 include overtemperature protection?

Yes, the regulator incorporates thermal shutdown circuitry to protect the device during overheating conditions.