TPS43331QDAPRQ1

Overview

The TPS43331QDAPRQ1 is an automotive-grade PMIC featuring a dual synchronous buck controller and two LDO regulators in a 38-pin HTSSOP package. It operates from a 1.8V to 30V supply with a switching frequency of 165kHz. The device provides four outputs: two controller channels for external power stages, one LDO outputting 1.2V to 8.5V at 650mA, and a second LDO channel. It is AEC-Q100 qualified for operation between -40°C and +125°C.

Feature Summary

• Integrates dual synchronous buck controllers and dual linear regulators within a single automotive-qualified package
• Supports wide input voltage range suitable for various automotive bus architectures
• Includes integrated monitoring capabilities for system reliability

Applications

• Automotive infotainment systems requiring multiple regulated rails
• Instrument clusters needing synchronized buck and low-noise LDO supplies
• Body control modules utilizing integrated power management solutions

Procurement Notes

Verify the specific suffix 'QDAPRQ1' matches the required 38-HTSSOP package and reel quantity. Confirm AEC-Q100 qualification status is explicitly stated for the target application environment. Ensure the ordering part number corresponds to the exact pinout and thermal characteristics defined in the official datasheet.

Selection Notes

Select this component when a combined solution for high-current buck conversion and precise LDO regulation is required in automotive environments. The dual buck controllers allow flexible topology design for different voltage levels, while the integrated LDOs provide clean power for sensitive analog or digital loads without additional discrete components.

Part Context

This device belongs to the TPS43331-Q1 family of multi-output power management ICs designed specifically for automotive applications. It consolidates multiple power stages into a compact form factor, reducing board space compared to discrete solutions. The family focuses on providing robust power distribution for complex electronic control units.

Replacement Considerations

Check for TPS43330AQDAPRQ1 if only dual buck and single boost functionality is needed without LDOs. Verify TPS43331QDRQ1 if a smaller SOIC-8 package is acceptable and fewer outputs are sufficient.