O3853QDCARQ1

Overview

The O3853QDCARQ1 is a multirail power supply integrated circuit designed for microcontrollers in safety-relevant automotive applications. Manufactured by Texas Instruments, it belongs to the TPS653853A-Q1 series and provides multiple regulated voltage rails required for complex system-on-chip architectures. The device supports an input voltage range of 2.3 V to 40 V and operates within an ambient temperature range of -40°C to +125°C. It is housed in a 48-pin HTSSOP package and holds AEC-Q100 qualification for automotive reliability standards.

Feature Summary

• Provides multiple independent voltage rails tailored for microcontroller power requirements
• Designed specifically for safety-relevant automotive applications meeting functional safety standards
• Supports wide input voltage ranges suitable for automotive battery systems

Applications

• TMS570 microcontroller platforms
• RM570 microcontroller platforms
• Hercules safety microcontrollers
• C2000 real-time control microcontrollers

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer verification. Confirm the specific datasheet revision matches design requirements. Check current lifecycle status as automotive components may undergo obsolescence notices. Ensure packaging integrity upon receipt due to moisture sensitivity classification. Validate that the HTSSOP-48 footprint aligns with existing PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when designing safety-critical automotive systems requiring a consolidated power solution for TI microcontrollers. It is appropriate for applications needing multiple regulated outputs from a single IC to reduce board space. Consider its AEC-Q100 qualification if automotive reliability standards are mandatory. Evaluate thermal performance within the HTSSOP-48 package against system heat dissipation capabilities.

Part Context

This part is part of the TPS65385x family of multirail power supplies from Texas Instruments. These devices are engineered to simplify power design for complex automotive microcontrollers by integrating multiple buck converters and low-dropout regulators. The family targets safety-relevant applications, ensuring compliance with automotive functional safety requirements while providing stable power rails for digital and analog subsystems.

Replacement Considerations

The O3852AQDCARQ1 is a related variant within the same TPS65385xA-Q1 family. Verify pin compatibility and output specifications before substitution. Consult official documentation for differences in rail configurations or current capabilities between these specific part numbers.