LM5143QRWGRQ1

DC DC Switching Controllers Overview

The LM5143QRWGRQ1 is an automotive-grade dual synchronous buck switching controller from Texas Instruments, designed for high-efficiency power conversion. It supports a wide input voltage range of 3.5 V to 65 V and operates with low quiescent current of 25 uA. The device features adjustable switching frequencies from 100 kHz to 2.2 MHz and delivers up to 100 A output current across two channels. It utilizes a VQFNP-40 package and meets AEC-Q100 standards, functioning within a temperature range of -40°C to +150°C.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck control architecture
• Wide input voltage capability up to 65 V
• Low quiescent current operation for efficiency
• Automotive qualification under AEC-Q100 standards

DC DC Switching Controllers Applications

• Automotive infotainment systems
• Telematics control units
• Body control modules
• ADAS power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'RWGRQ1' against the manufacturer's official datasheet to confirm package type and automotive grade compliance. Ensure that the ordering information matches the required thermal performance and pinout configuration for your PCB layout. Cross-reference the AEC-Q100 qualification status directly with Texas Instruments documentation to validate suitability for automotive environments.

DC DC Switching Controllers Selection Notes

Select this component when designing multi-rail power architectures requiring independent regulation for multiple loads. The dual-phase capability allows for interleaved operation to reduce input ripple and improve transient response. Consider the wide input voltage range for direct battery connection applications without pre-regulation stages.

DC DC Switching Controllers Part Context

This part belongs to the LM5143-Q1 family of dual synchronous buck controllers. It shares architectural similarities with other automotive PMICs but is distinct in its dual-output configuration and specific frequency tuning capabilities. The Q1 designation indicates it is engineered specifically for automotive reliability and harsh environmental conditions.

DC DC Switching Controllers Replacement Considerations

LM5143RHAR is a non-automotive variant with similar electrical characteristics but different temperature ratings. LM5140QRWGRQ1 is a related automotive part but may have different frequency or current specifications. Verify pin compatibility and thermal requirements before substitution.