LM63440AASQRYFRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM63440AASQRYFRQ1 is an automotive-grade synchronous step-down DC/DC converter manufactured by Texas Instruments. It operates with an input voltage range of 3 V to 36 V and delivers a maximum output current of 4 A. The device supports adjustable output voltages from 1 V to 34.2 V. Key electrical specifications include a quiescent current of 9 uA and a programmable switching frequency ranging from 200 kHz to 2.2 MHz. It functions within a temperature range of -40°C to +150°C and utilizes a VQFN-FCRLF-EP-22 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck topology for high-efficiency power conversion
• Designed for low electromagnetic interference (EMI) performance in sensitive environments
• Supports wide input voltage ranges suitable for automotive battery systems
• Includes shutdown functionality for power management optimization

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Telematics control unit voltage regulation
• Body control module power supply stages
• ADAS sensor interface power conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct package, temperature grade, and tape/reel configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to ordering. Cross-reference datasheet revisions to validate functional parameters and pinout compatibility for your specific design implementation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring robust EMI suppression and wide input voltage tolerance. Ensure thermal management strategies align with the +150°C maximum junction temperature rating. Verify that the required output current does not exceed the 4 A limit under worst-case operating conditions and ambient temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM63440 family of automotive synchronous buck converters. It is distinct from non-automotive variants and other series like LMQ62440 or LM61440 due to its specific qualification standards and feature set tailored for automotive reliability. The 'Q1' suffix indicates AEC-Q100 qualification.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official Texas Instruments substitution guides for verified equivalents. Potential alternatives within the same family may include LM63440 variants with different package options or fixed voltage outputs, provided they meet the specific automotive qualification and electrical requirements.