LM26420Q1XMH/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26420Q1XMH/NOPB is a dual synchronous buck DC-DC converter from Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It integrates two independent channels, each delivering up to 2A of output current. The device operates with an input voltage range supporting typical automotive loads and provides adjustable output voltages from 800 mV to 4.5 V. Key electrical specifications include a switching frequency of 2.2 MHz, enabling the use of small external components. It features low quiescent current of 4.7 mA and operates reliably within a junction temperature range of -40°C to +125°C. The component is housed in a compact WQFN-16 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-channel architecture providing independent regulation for two separate loads
• Automotive-grade reliability certified under AEC-Q100 standards
• High-frequency synchronous rectification for improved efficiency and reduced passive component size
• Integrated protection mechanisms including thermal shutdown and current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring multiple regulated power rails
• Instrument clusters and dashboard displays
• Telematics control units
• Body control modules (BCM)
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix XMH against the official datasheet to confirm the WQFN-16 package type and tape-and-reel orientation. Ensure the Q1 designation matches your vehicle's quality requirements. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required by your assembly process. Check for any recent product change notices that may affect pinout or electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are needed in a space-constrained automotive environment. The 2.2 MHz switching frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the thermal performance of the WQFN-16 package relative to your PCB copper area. Evaluate the input voltage range against your system's battery profile. Compare total solution cost and board space against single-channel solutions if only one rail is strictly necessary.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM26420 family of high-efficiency synchronous buck converters. The Q1 variant specifically denotes automotive qualification. Other variants in the series include different package options such as XSQX. The family is designed to replace linear regulators in automotive applications where heat dissipation and efficiency are critical concerns.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements within the same family include LM26420Q1XSQX/NOPB. Verify package compatibility between WQFN-16 and alternative footprints before substitution. Electrical parameters should be cross-checked for output current and switching frequency differences.