LM2840XQMKX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2840XQMKX/NOPB is a SIMPLE SWITCHER step-down DC/DC regulator from Texas Instruments, designed for automotive and industrial applications. It operates with an input voltage range of 4.5V to 42V and provides a fixed output current capability of 100mA. The device integrates a 550kHz switching frequency to minimize external component size. It features a thin SOT-23-6 package suitable for space-constrained designs. The operational junction temperature range extends from -40°C to 125°C, ensuring reliability in harsh environments.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification is not present; the device utilizes a non-synchronous buck topology for cost-effective power conversion.
• Automotive qualification ensures compliance with AEC-Q100 standards for high reliability in vehicle electronics.
• Compact thin SOT-23-6 packaging facilitates high-density PCB layouts while maintaining thermal performance.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable low-current power rails
• Industrial control modules needing isolated or regulated auxiliary voltages
• Battery-powered equipment utilizing wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'XQMKX' against the manufacturer's latest documentation to confirm pinout and electrical specifications match your design requirements. Ensure the 'NOPB' designation aligns with lead-free and RoHS compliance mandates for your target market. Cross-reference the active status, as some variants may be obsolete or subject to last-time buy notices.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, automotive-grade buck converter is needed for currents up to 100mA. It is suitable for applications where input voltages vary significantly between 4.5V and 42V. Consider alternative models if higher output current or synchronous efficiency is required, as this unit uses a non-synchronous design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM284x family of SIMPLE SWITCHER regulators, which are known for their ease of use and minimal external component count. The LM2840 variant specifically targets lower current applications compared to the 0.6A LM2842 or 300mA LM2841. All share similar packaging and automotive qualification but differ in output current capabilities.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitutes include parametric equivalents within the same family. Check for LM2840XMK-ADJL if adjustable output is acceptable. Verify compatibility with LM2841XQMKX-NOPB or LM2842XQMKX/NOPB only if higher current ratings are permissible and pinouts match.