LM2651MTCX-2.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2651MTCX-2.5/NOPB is a synchronous step-down switching regulator manufactured by Texas Instruments, designed for high-efficiency power conversion in compact applications. It operates with an input voltage range of 4 V to 14 V and provides a fixed output voltage of 2.5 V. The device supports a maximum output current of 1.5 A and features a switching frequency of 330 kHz. Packaged in a 16-pin TSSOP surface-mount case, it functions within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture ensures high efficiency across load conditions
• Integrated power switch reduces external component count and board space
• Fixed internal feedback network simplifies design for standard voltage rails

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for portable electronic devices
• Voltage translation in industrial control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '2.5' confirms the fixed 2.5 V output variant, as other suffixes indicate adjustable or different fixed voltages. Ensure the 'NOPB' designation aligns with RoHS compliance requirements for your assembly process. Confirm the 'X' indicates reel packaging if automated placement is required. Cross-reference the manufacturer part number directly with official Texas Instruments documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.5 V rail is required from a 4–14 V source with up to 1.5 A capacity. The synchronous topology offers superior efficiency compared to non-synchronous alternatives at similar current levels. Consider the 16-pin TSSOP package constraints for thermal management and PCB layout. Evaluate the 330 kHz switching frequency against EMI sensitivity and passive component size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2651 family of high-efficiency synchronous buck converters. It shares architectural similarities with the LM2655 but differs in output current capability and package options. The LM2651 series is optimized for applications requiring moderate current density and high efficiency in small form factors, distinguishing it from higher-current regulators in the broader portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2651MTC-ADJ/NOPB serves as a functional alternative if an adjustable output voltage is acceptable instead of the fixed 2.5 V configuration. Both parts share identical electrical specifications, pinouts, and thermal characteristics. Verify that the application circuitry can accommodate the external resistor divider required for the adjustable variant.