LM2675N-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2675N-3.3 is a Texas Instruments fixed-output step-down switching regulator operating at a nominal 3.3V output with a maximum load current of 1A. It accepts an input voltage range from 8V to 40V and utilizes a buck topology with a fixed switching frequency of 260kHz. The device is housed in an 8-pin MDIP package for through-hole mounting, supporting an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch eliminates the need for external high-current components
• Fixed internal switching frequency reduces external component count and size
• Built-in thermal shutdown protects against overheating under fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control systems with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' indicates lead-free and RoHS compliance. Confirm the 'N' designation corresponds to the MDIP through-hole package variant rather than surface-mount options. Ensure the specific output voltage version matches the required 3.3V specification for the target circuit design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a through-hole solution is required for 1A buck conversion. Compare against the LM2674 series if lower current requirements exist or against the LM2675M series if surface-mount assembly is preferred. Verify that the 260kHz switching frequency aligns with electromagnetic interference constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2675 family of simple-switcher regulators designed for high-efficiency DC-DC conversion. It serves as a direct replacement for older linear regulators in applications where heat dissipation is a concern. The family includes adjustable and multiple fixed voltage variants sharing similar pinouts and control logic.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2675N-ADJ/NOPB (Adjustable output variant)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2675N-3.3?

The maximum input voltage is 40V.

Does the LM2675N-3.3 include overcurrent protection?

Yes, it features cycle-by-cycle current limiting and thermal shutdown protection.