LM26420Q1XSQX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26420Q1XSQX/NOPB is a dual synchronous step-down DC-DC converter designed for automotive applications. It operates with an input voltage range of 3V to 5.5V and provides two adjustable output channels, each capable of delivering up to 2A. The outputs are adjustable from 800mV to 4.5V. Operating at a fixed switching frequency of 2.2MHz, the device integrates power MOSFETs and supports external synchronization. It features AEC-Q100 qualification and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent synchronous buck converters providing separate regulated outputs
• Automotive-grade reliability certified under AEC-Q100 standards
• Integrated high-side and low-side power switches for compact design
• Fixed internal switching frequency enables small passive component selection

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Telematics control unit voltage regulation
• ADAS sensor module power supply
• Body control module auxiliary rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as NOPB and package designation XSQX to ensure correct configuration. Confirm that the specific revision matches the required automotive grade and pinout compatibility. Check manufacturer documentation for moisture sensitivity levels and recommended reflow profiles prior to assembly planning.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required from a single 3V to 5.5V source. Ensure the load current does not exceed 2A per channel. Consider thermal performance in the WQFN-16 package based on PCB copper area and ambient conditions. Verify that the 2.2MHz frequency aligns with EMI requirements and inductor size constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM26420 family of dual synchronous regulators. It shares architectural similarities with other automotive PMICs but distinguishes itself through its specific dual-channel 2A capability and fixed high-frequency operation. The Q1 suffix indicates automotive qualification, differentiating it from commercial variants like the LM26420.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM26420 variants with compatible packaging and electrical specifications. Verify pin-to-pin compatibility and output current ratings before substitution. Cross-reference with TI's official replacement guide for any updated revisions or end-of-life notices.