LM2672N-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2672N-ADJ is a SIMPLE SWITCHER power converter manufactured by Texas Instruments, utilizing LMDMOS technology. It functions as a high-efficiency 1A step-down voltage regulator with an adjustable output voltage range of 1.21 V to 37 V. The device operates within an input voltage window of 8 V to 40 V and maintains a fixed switching frequency of 260 kHz. Key electrical specifications include a maximum output current of 1 A, a quiescent current of 2.5 mA, and an efficiency exceeding 90%. It supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates internal frequency compensation, fixed-frequency oscillator, and soft-start functionality to minimize external component count.
• Features TTL shutdown capability for low-power standby modes and includes thermal shutdown and current limit protection.
• Supports frequency synchronization and utilizes patented internal design to allow smaller filter components due to 260 kHz switching.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring efficient step-down conversion
• Post-regulation for bus distribution networks
• High-efficiency point-of-load regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package type and manufacturer status before procurement. The LM2672N-ADJ designation typically refers to the PDIP-8 package variant. Confirm availability as this part number may be discontinued or superseded by newer revisions such as the NOPB versions. Ensure the selected supplier provides authentic components from Texas Instruments or authorized distributors to guarantee performance reliability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select the LM2672N-ADJ when a through-hole PDIP-8 package is required for designs needing 1A output current. This model is suitable for applications where board space allows for larger packages but high efficiency and simple design are priorities. Compare against surface-mount variants like the LM2672MX-ADJ if PCB real estate is constrained. Ensure the input voltage remains within the 8V to 40V range for optimal operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2672 SIMPLE SWITCHER family, which offers a range of fixed and adjustable output buck regulators. The series is known for reducing design complexity and component count. The LM2672N-ADJ specifically represents the adjustable output version in a PDIP package, distinguishing it from SOIC or MSOP variants within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitutes include LM2672MX-ADJ/NOPB (SOIC package) and LM2672M-ADJ (SOIC package). Verify pin compatibility and thermal characteristics when transitioning between package types. Check for updated NOPB versions which may offer RoHS compliance improvements over older National Semiconductor stock.