LMQ66430R5RXBR

Voltage Regulators - DC DC Switching Regulators Overview

The LMQ66430R5RXBR is a synchronous step-down converter from Texas Instruments featuring a 36V maximum input voltage and 3A output current capability. It operates with a fixed 2.2MHz switching frequency and delivers a 5V output. The device utilizes a VQFN-FCRLF-EP-14 package, supporting an operating temperature range from -40°C to +125°C. Designed for low electromagnetic interference (EMI), it integrates internal power switches and offers high efficiency across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated low-EMI synchronous buck architecture
• Fixed 2.2MHz switching frequency operation
• Compact VQFN-FCRLF-EP-14 footprint design

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems
• Point-of-load regulation
• Embedded computing platforms

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RXB confirms the VQFN-FCRLF-EP-14 package configuration and tape-and-reel delivery format. Ensure the 5V fixed output variant matches the system requirement, as other output voltages may exist within the LMQ664x0 family. Confirm RoHS compliance status through official manufacturer documentation prior to integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 36V input rail requires conversion to a stable 5V at up to 3A with minimal external inductor size. The fixed 2.2MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider thermal performance in the small QFN package if continuous full-load operation is expected in enclosed environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMQ664x0 series of ultra-small synchronous step-down converters. The series includes variants with 1A and 2A output capabilities, sharing similar architectural features such as low EMI design and wide input voltage ranges. The R5 suffix typically denotes the specific output voltage setting within the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR66430R5RXBR shares similar electrical specifications but lacks the specific low-EMI optimizations found in the LMQ series. Direct substitution requires verification of EMI performance requirements and thermal characteristics in the target application environment.