LM2672M-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2672M-3.3 is a monolithic integrated DC-DC step-down voltage regulator manufactured by Texas Instruments using LMDMOS technology. It operates within an input voltage range of 8V to 40V and provides a fixed output voltage of 3.39V with a maximum load current of 1A. The device functions at a fixed internal switching frequency of 260 kHz, enabling the use of compact external filter components. It features high efficiency exceeding 90%, allowing thermal management via PCB copper traces without additional heat sinks. The component supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated SIMPLE SWITCHER architecture requiring only five external components for basic operation
• Built-in internal frequency compensation, soft-start, and frequency synchronization capabilities
• Includes TTL shutdown functionality for low-power standby modes
• Provides comprehensive protection against thermal overload and output current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for field-programmable gate arrays (FPGAs)
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control modules operating under wide input voltage variations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation to confirm the package type and lead-free status. Ensure the ordering code matches the required SOIC-8 configuration. Confirm RoHS compliance requirements align with project specifications. Validate that the fixed 3.3V output variant meets the target circuit voltage needs before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an 8V to 40V input source. It is suitable for designs prioritizing minimal external component count and moderate switching frequencies. Consider alternative variants if adjustable output or higher current capacity is necessary. Evaluate thermal performance based on expected load currents and ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2672 series of SIMPLE SWITCHER power converters. The series includes fixed voltage options such as 5V and 12V, alongside adjustable versions. All members share the same core topology and pinout, differing primarily in internal feedback resistor networks that set the output voltage level.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2672M-5.0/NOPB: Fixed 5V output variant with identical packaging and electrical characteristics. LM2672MX-ADJ/NOPB: Adjustable output version offering flexible voltage setting within the same series constraints.