LM2674LD-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674LD-3.3 is a fixed-output step-down voltage regulator from the Texas Instruments SIMPLE SWITCHER family, designed for high-efficiency power conversion. It provides a regulated 3.3 V output with a maximum load current of 500 mA. The device operates with an input voltage range of 8 V to 40 V and features a switching frequency of 275 kHz. Packaged in an 8-pin SOIC (D) surface-mount package, it integrates a 1 A internal switch and supports operation over an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 1 A internal power switch eliminates external component requirements
• Fixed 3.3 V output option simplifies design implementation
• High efficiency performance reduces thermal management needs
• Wide input voltage range accommodates various supply sources

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 distribution
• Telecommunications infrastructure power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'LD' against official datasheets to confirm package type and temperature grade. Ensure compatibility with required PCB footprint dimensions for the SOIC-8 package. Confirm RoHS compliance status if mandated by project specifications. Cross-reference ordering information directly with Texas Instruments documentation to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with moderate current demands up to 500 mA. It is suitable for applications where board space is limited due to its compact surface-mount packaging. Consider the 275 kHz switching frequency for trade-offs between component size and electromagnetic interference. Verify that the input voltage remains within the specified 8 V to 40 V operational window.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 series of SIMPLE SWITCHER power converters, which are known for their ease of use and high efficiency. The series includes variants with different output voltages and adjustable options. The LM2674 series is widely used in general-purpose power supply designs requiring reliable step-down regulation with minimal external circuitry.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2674M-3.3/NOPB and LM2674SX-3.3/NOPB. Verify pinout compatibility and thermal characteristics before substitution. Ensure the alternative part meets the same input voltage and current specifications.