LM2650MX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2650MX-ADJ/NOPB is a synchronous step-down DC/DC converter manufactured by Texas Instruments, formerly National Semiconductor. It operates with an input voltage range of 4.5 V to 18 V and provides an adjustable output voltage from 1.5 V to 16 V. The device supports a maximum output current of 3 A with a fixed switching frequency of 360 kHz. It features a shutdown function and operates within a temperature range of -40°C to +125°C. The component is housed in a SOIC-24 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Adjustable output voltage capability via external resistors
• Built-in shutdown control for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for industrial equipment
• Battery-powered devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the suffix NOPB indicates lead-free and RoHS compliance. Ensure the MX suffix corresponds to the tape-and-reel packaging format rather than tube packaging. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-output buck converter with 3 A capacity is required. The 360 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the input voltage does not exceed 18 V. Consider thermal performance in the SOIC-24 package for high-current applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2650 series of synchronous buck converters. It is designed to replace older non-synchronous regulators in National Semiconductor's portfolio. The device integrates the high-side and low-side MOSFETs to reduce external component count and improve overall system efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2650M-ADJ/NOPB is the tube-packaged equivalent. LM2650SX-ADJ/NOPB may be available from other distributors.