LM2651MTCX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2651MTCX-3.3/NOPB is a high-efficiency synchronous buck switching regulator from Texas Instruments, designed for applications requiring stable power conversion within a 4 V to 14 V input range. It delivers a fixed 3.3 V output with a maximum load current of 1.5 A. The device operates at a switching frequency of 330 kHz and supports an operating temperature range from -40°C to +125°C. Packaged in a 16-pin TSSOP, it integrates internal power switches to minimize external component count while maintaining ultrahigh efficiency up to 97% across a wide load range.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced efficiency
• Fixed 3.3 V output voltage configuration
• Integrated 1.5 A power switch capability
• Wide 4 V to 14 V input voltage tolerance

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered portable devices
• Industrial control power supplies
• Communication equipment backend power

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the /NOPB suffix to ensure lead-free compliance and specific package variant accuracy. Confirm the TSSOP-16 package type matches your PCB footprint requirements. Cross-reference the datasheet revision to ensure compatibility with your design specifications regarding thermal performance and electrical characteristics before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from a 4–14 V source with up to 1.5 A capacity. The synchronous design reduces external inductor size compared to non-synchronous alternatives. Ensure the application environment stays within the -40°C to +125°C operational limits. Consider thermal management solutions if operating near maximum load currents in enclosed spaces.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2651 family of high-efficiency synchronous switching regulators. It shares core topology with variants like the LM2655 but offers lower current capacity and fixed voltage options. The family targets compact power designs where space and efficiency are critical constraints. Development tools such as the LM2651-3.3EVAL/NOPB are available for circuit validation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM2651 series variants with different output voltages or current ratings. Verify pinout compatibility and thermal characteristics when considering alternative manufacturers' synchronous buck regulators with similar 4–14 V input ranges.