O3853AQDCARQ1

Overview

The O3853AQDCARQ1 is a specialized automotive power management IC (PMIC) from Texas Instruments, belonging to the TPS653853A-Q1 series. It serves as a multi-rail power supply designed for microcontrollers in safety-relevant applications. The device features an input voltage range of 2.3 V to 40 V and provides multiple regulated output rails with voltages ranging from 3.3 V to 6 V. It is housed in an HTSSOP-48 package and operates within a temperature range of -40°C to +125°C. The component holds AEC-Q100 qualification and supports ISO26262 ASIL-D functional safety requirements.

Feature Summary

• Provides multi-rail power supply capabilities specifically engineered for microcontroller systems in safety-critical environments.
• Complies with ISO26262 ASIL-D functional safety standards to support robust automotive electronic architectures.
• Features wide input voltage tolerance suitable for demanding automotive electrical load dump conditions.

Applications

• Powering TMS570 and RM570 microcontrollers
• Supplying Hercules safety microcontrollers
• Supporting C2000 real-time control processors

Procurement Notes

Verify current availability status as the component may be subject to lifecycle changes or regional distribution restrictions. Confirm that the specific ordering suffix matches the required package and temperature grade. Ensure compliance with RoHS directives and check for any recent Product Change Notifications (PCN) affecting manufacturing sites or materials before finalizing procurement decisions.

Selection Notes

Select this PMIC when designing systems requiring ASIL-D certified power management for Texas Instruments microcontrollers. It is appropriate for applications needing integrated regulation for multiple voltage rails from a single wide-range input source. Consider thermal performance and PCB layout constraints associated with the HTSSOP-48 package during the design phase.

Part Context

This part belongs to the TPS65385x-A-Q1 family of multi-rail power supplies. These devices are tailored for automotive safety applications, offering integrated protection and monitoring features. The family includes variants like TPS653850A-Q1 and TPS653852A-Q1, which share similar architectural goals but differ in specific output configurations and safety integration levels.

Replacement Considerations

Potential substitutes include TPS653850AQDCARQ1 and TPS653852AQDCARQ1. Verify pin compatibility and specific output current/voltage requirements before substitution, as these variants may offer different rail configurations or safety feature sets.