LM2650MX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2650MX-ADJ 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 delivers up to 3 A output current. The adjustable output voltage spans from 1.5 V to 16 V. Key electrical parameters include a fixed switching frequency of 360 kHz and a quiescent supply current of 16 mA. The device functions within a temperature range of -40°C to +125°C and utilizes a SOIC-24 surface-mount 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 in industrial systems
• Power supplies for embedded controllers
• Battery-powered equipment 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 MX indicates tape-and-reel packaging distinct from tube variants. Ensure the NOPB designation is present if lead-free compliance is required. Cross-reference the specific revision level against the official datasheet to confirm pinout and electrical characteristics match the design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact synchronous buck solution is needed for inputs up to 18 V. The 360 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the thermal performance of the SOIC-24 package meets the application's heat dissipation needs under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2650 family of synchronous step-down converters. It shares core architecture with fixed-output variants like the LM2650M-12/NOPB but offers programmable output voltage. The series is designed for applications requiring moderate current levels with high efficiency and low standby power consumption.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM2650 family members such as LM2650M-ADJ/NOPB. For equivalent performance, consider TPS54335A or similar synchronous buck regulators from Texas Instruments with comparable input ranges and current capabilities.