LM2842XQMK-M3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2842XQMK-M3 is an automotive-grade step-down DC/DC regulator from Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range of 4.5 V to 42 V and delivers a maximum output current of 600 mA. The device integrates a 1.5-A power switch and supports adjustable output voltages from 765 mV to 34 V. It functions at a fixed switching frequency of 550 kHz and includes features such as cycle-by-cycle current limiting, thermal shutdown, and a shutdown pin for low quiescent current operation of 1.3 mA. The component is housed in a thin SOT-23-6 package and is qualified to AEC-Q100 standards for operation between -40°C and +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Integrated high-efficiency 1.5-A power switch enables compact external component design
• Wide input voltage range accommodates various automotive bus conditions including load dump scenarios
• Built-in protection mechanisms include thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered automotive electronic systems
• Infotainment and display driver power supplies
• Sensor interface circuits requiring stable regulated voltage
• Body control modules and lighting applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix M3 indicates lead-free composition and specific manufacturing lot codes. Confirm AEC-Q100 qualification status through official Texas Instruments documentation. Ensure the thin SOT-23-6 package matches the PCB footprint requirements. Cross-reference the exact part number against the latest datasheet revision to confirm parameter consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive environments requiring robust input voltage handling up to 42 V. The integrated power switch reduces bill of materials compared to discrete solutions. Consider the 550 kHz switching frequency for balancing efficiency and electromagnetic interference. Verify that the 600 mA output current meets the load requirements under all operating temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2842-Q1 series of SIMPLE SWITCHER regulators designed specifically for automotive applications. It shares architectural similarities with other members of the family but is distinguished by its automotive qualification and specific packaging options. The series targets applications needing reliable step-down conversion in space-constrained automotive electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2842XQMK/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage supported by the LM2842XQMK-M3?

The device supports an input voltage range up to 42 V.

Is the LM2842XQMK-M3 suitable for automotive applications?

Yes, it is qualified to AEC-Q100 standards for automotive use.

What type of package does this regulator use?

It is available in a thin SOT-23-6 package.