LM2651MTCX-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2651MTCX-1.8/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, designed for high-efficiency power conversion in space-constrained applications. This specific variant provides a fixed output voltage of 1.8V with a maximum continuous output current capability of 1.5A. The device operates from an input voltage range of 4V to 14V and utilizes a 16-pin TSSOP package with an exposed thermal pad for enhanced heat dissipation. It integrates internal power switches and features a switching frequency of approximately 345kHz, allowing for the use of small external inductors and capacitors while maintaining stable regulation under varying load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency across load ranges
• Fixed 1.8V output configuration eliminates external feedback resistor requirements
• Compact 16-pin TSSOP package with exposed pad for thermal management

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital signal processors
• Power supply stages for memory modules
• Bias voltage generation for communication interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the suffix '1.8' denotes the fixed 1.8V output variant, distinct from the adjustable 'ADJ' version. Confirm the 'X' suffix indicates tape-and-reel packaging rather than tube. Ensure compatibility with the required 1.8V rail specification before procurement to avoid functional mismatches in fixed-voltage designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required without external programming resistors. It is suitable for designs needing up to 1.5A output current within a 4V to 14V input range. Consider the thermal performance of the TSSOP package and ensure adequate PCB copper area for the exposed pad to maintain junction temperature within safe operating limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2651 family of synchronous buck converters from Texas Instruments. It shares architectural similarities with other members like the LM2651MTC-ADJ/NOPB but differs in output configuration. The family is characterized by high efficiency and compact size, targeting portable electronics and industrial control systems requiring efficient step-down conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2651MTC-1.8/NOPB