LM26420YSQX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26420YSQX/NOPB is a dual synchronous step-down DC-DC converter from Texas Instruments, 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. Integrated into a compact 16-pin WQFN package, the device supports a switching frequency of 2.2MHz. It is qualified under AEC-Q100 standards and functions reliably within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-channel synchronous buck topology for independent power rail generation
• Automotive-grade qualification ensuring reliability in harsh environments
• Integrated high-side and low-side MOSFETs for efficient power conversion
• Compact surface-mount packaging optimized for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Advanced Driver Assistance Systems (ADAS) power distribution
• Infotainment system voltage regulation
• Telematics control unit power management
• Body control module auxiliary power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Y' against the official datasheet to confirm pinout or thermal pad configuration differences compared to standard variants. Ensure the component meets AEC-Q100 Grade 1 requirements for your specific application temperature profile. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the 16-WQFN package footprint matches your PCB design guidelines.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated or non-isolated rails are required from a single 3V to 5.5V source. It is suitable for applications needing up to 2A per channel with high efficiency at moderate loads. Consider the 2.2MHz switching frequency for smaller external inductor and capacitor sizes compared to lower-frequency alternatives. Ensure the thermal performance of the WQFN package aligns with the expected power dissipation in the target enclosure.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM26420-Q1 family of dual synchronous buck converters. It shares core electrical characteristics with other variants in the series but may differ in package type or specific automotive qualification grades. The family is targeted at automotive PMIC solutions requiring high integration and reliability. Other members include versions with different pin counts or output configurations.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM26420Q1XSQX/NOPB and LM26420Q1XSQ/NOPB, provided the package and pinout compatibility is verified. Check for any functional differences in the 'Y' suffix variant before substitution. Ensure that any alternative maintains the same input voltage range and output current capabilities.