LMR66430MC3RXBRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR66430MC3RXBRQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It supports a wide input voltage range of 3V to 36V and delivers up to 3A of output current. The device features a default fixed output voltage of 3.3V and operates with a switching frequency of 2.2MHz, which includes spread spectrum functionality for EMI reduction. It utilizes a compact 2.6mm x 2.6mm HotRod QFN package and offers selectable operation modes including PFM (Auto-Mode) or FPWM (Forced PWM). The component is qualified for AEC-Q100 standards and functions within a temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability in vehicle environments
• Integrated synchronous buck topology providing efficient power conversion with low external component count
• Spread spectrum modulation capability to minimize electromagnetic interference peaks
• Selectable pulse-frequency modulation or forced pulse-width modulation operation modes

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution networks
• Instrument cluster and dashboard control modules
• Body control module (BCM) power regulation
• ADAS sensor interface power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MC3' against the manufacturer's official datasheet to confirm the exact output voltage configuration and pinout compatibility. Ensure that the ordering part number matches the required automotive grade specifications and thermal performance requirements for your target application environment before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring a robust, space-constrained power solution for automotive applications. It is suitable for designs needing a wide input voltage tolerance and high efficiency under varying load conditions. Consider the thermal characteristics of the HotRod package and ensure adequate PCB layout for heat dissipation to maintain performance at maximum load currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR664xx-Q1 family of automotive synchronous buck converters. It shares architectural similarities with other members like the LMQ66430-Q1 but is distinguished by its specific automotive qualification and packaging options. The family is designed to address the stringent reliability and size constraints typical of modern automotive electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include the LMQ66430-Q1 and LMR66430. Verify functional equivalence regarding input/output specifications and package dimensions. Confirm that any substitute meets the same automotive quality standards and operating temperature ranges required by the design.