Texas Instruments LM2672M-ADJ Adjustable DC-DC Buck Regulator 1A SOIC-8

Texas Instruments LM2672M-ADJ is an adjustable DC-DC buck regulator IC with a 1A output, providing step-down voltage regulation from a 6.5V to 40V input range in an 8-pin SOIC surface-mount package.

Overview

The Texas Instruments LM2672M-ADJ is a SIMPLE SWITCHER step-down (buck) voltage regulator designed to simplify power supply design. It is capable of driving loads up to 1A and provides line and load regulation across a broad input range. The adjustable output version requires only five external components, which can streamline the design process and reduce overall board space.

The regulator operates at a fixed switching frequency of 260kHz, which allows the use of smaller filter components compared with lower-frequency alternatives. Efficiency is typically up to 90%, and the copper traces on the PCB can provide sufficient heat sinking in many applications. The device incorporates patented internal frequency compensation to simplify stability design.

Key Features

• Soft-start function to limit inrush current
• Frequency synchronisation capability
• Thermal shutdown to protect against overheating
• Current limit protection for the regulator and load
• TTL-compatible shutdown capability
• Low-power standby mode

Specifications

• Topology: Buck (Step-Down)
• Input voltage range: 6.5V to 40V
• Adjustable output range: 1.21V to 37V
• Output current: 1A maximum
• Switching frequency: 260kHz (typical)
• Efficiency: Up to 90%
• Package: 8-pin SOIC (surface mount)
• Operating temperature range: -40°C to +125°C
• Dimensions: 3.3 (width) x 1.5 (depth) x 4.3 (height)
• Weight: 0.1 g

Applications

Suited to a wide range of power management tasks, from industrial controls to embedded systems.