LMR66410MC5RXBRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR66410MC5RXBRQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It supports an input voltage range of 3 V to 36 V and delivers a maximum output current of 1 A. The device features a fixed switching frequency of 400 kHz and operates within a junction temperature range of -40°C to +150°C. It utilizes a VQFN-FCRLF-EP-14 package with a thermal pad for enhanced heat dissipation. The regulator includes shutdown functionality and has a typical quiescent current of 2 µA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Functional safety capable with documentation available to aid system design
• Qualified for automotive applications under AEC-Q100 standards
• Integrated low EMI filtering capabilities for noise reduction

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body electronics modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix MC5 against the official datasheet to confirm pinout and thermal characteristics. Ensure the component meets AEC-Q100 Grade 1 requirements for your target application environment. Cross-reference the marking code R1MC5 or similar on the package to validate authenticity and manufacturing date code before integration into production lines.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, high-efficiency solution is required for 12V or 24V automotive bus architectures. The 1 A output capability suits moderate load applications where space constraints limit larger packages. Consider the 400 kHz switching frequency for balancing component size and efficiency. Verify that the external inductor and capacitor values align with the recommended design parameters for stable operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR664x0-Q1 family of small, 36V, synchronous step-down converters. The family offers variants with different current ratings, including 1 A, 2 A, and 3 A options. All members share the enhanced HotRod QFN package design, which provides superior thermal performance and a small footprint suitable for dense PCB layouts in automotive environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMQ66410MA5RXBRQ1: Similar 1 A automotive buck converter but may differ in specific EMI filtering configurations or package thermal resistance details. Verify pin-to-pin compatibility and electrical specifications before substitution.