LM2841YQMKX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2841YQMKX/NOPB is an automotive-grade, adjustable step-down DC/DC regulator from the LM284x-Q1 series. It supports a wide input voltage range of 4.5 V to 42 V and delivers up to 300 mA output current. The device operates at a fixed switching frequency of 1.25 MHz, enabling the use of small external components. It features an adjustable output voltage range from 0.765 V to 34 V. Packaged in a thin SOT-23-6 (TSOT) surface-mount package with dimensions of 2.97 mm x 1.65 mm x 0.87 mm, it ensures reliable operation across an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability in vehicle environments.
• Integrated synchronous buck topology provides efficient power conversion within a compact footprint.
• Fixed high-frequency switching reduces passive component size while maintaining stable regulation.
• Wide input voltage capability accommodates various automotive bus architectures and transient conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Instrument cluster voltage regulation
• Body control module power supplies
• Telematics unit biasing

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'YQ' confirms automotive grade and tape-and-reel packaging configuration. Ensure the design accounts for the thermal characteristics of the TSOT-6 package under maximum load conditions. Confirm that the selected supplier source matches the Texas Instruments manufacturing origin to guarantee compliance with the AEC-Q100 specification and long-term availability for automotive production lines.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring a compact solution with high input voltage tolerance. The 300 mA output current suits low-power logic or sensor interfaces rather than high-current loads. Consider the 1.25 MHz frequency for minimizing inductor size compared to lower-frequency alternatives. Verify that the required output voltage falls within the 0.765 V to 34 V adjustable range supported by the internal feedback network.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM284x-Q1 family, which includes variants with different current ratings such as the LM2840 (100 mA) and LM2842 (600 mA). All members share the same pinout and basic functionality but differ in thermal performance and maximum continuous current capabilities. The LM2841 serves as the mid-range option in this series, balancing efficiency and size for moderate power requirements in space-constrained automotive modules.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2841YMK/NOPB: Non-automotive commercial grade version with identical electrical specifications but lacking AEC-Q100 certification.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM2841YQMKX/NOPB suitable for harsh automotive environments?

Yes, it is qualified to AEC-Q100 standards and rated for operation from -40°C to +125°C, making it suitable for under-hood and cabin applications.

What is the minimum achievable output voltage?

The device supports an adjustable output voltage down to 0.765 V, allowing flexibility for low-voltage digital core supplies.