LP87332ARHDTQ1

Overview

The LP87332ARHDTQ1 is an automotive-grade PMIC from the LP8733 series, housed in a 28-VQFN package. It integrates two 3-A buck converters and two 300-mA LDOs. The input voltage range is 2.5 V to 5.5 V. Buck outputs support 0.7 V to 3.36 V at 3 A. LDO outputs support 0.8 V to 3.3 V at 300 mA. The switching frequency is 2 MHz. Operating temperature spans -40°C to 125°C. It holds AEC-Q100 qualification.

Feature Summary

• Integrates dual high-current synchronous buck converters with independent control
• Includes dual low-dropout linear regulators for noise-sensitive loads
• Features 2-MHz switching frequency for compact external component sizing
• Designed for automotive environments with extended temperature ratings

Applications

• Automotive infotainment systems
• Digital signal processing power rails
• Sensor hub power distribution
• Telematics unit voltage regulation

Procurement Notes

Verify the specific suffix 'ARHDTQ1' against the official Texas Instruments datasheet to confirm pinout, thermal pad configuration, and exact output current ratings. Ensure the procurement channel provides valid traceability documentation required for automotive-grade components. Cross-reference the manufacturer part number directly with the latest product status to avoid obsolete or non-conforming inventory.

Selection Notes

Select this device when designing automotive circuits requiring four distinct regulated rails from a single IC footprint. The combination of two 3-A buck stages and two 300-mA LDO stages addresses mixed-signal power needs efficiently. Consider the 28-VQFN package size constraints and thermal dissipation requirements for the high-current buck channels during PCB layout planning.

Part Context

This component belongs to the LP8733 family of multi-output power management integrated circuits. It shares architectural similarities with other variants like the LP87332BRHDTQ1 but differs in specific output configurations and manufacturing lot codes. The Q1 suffix denotes automotive qualification, distinguishing it from commercial grade parts within the same functional family.

Replacement Considerations

LP87332BRHDTQ1

FAQ

What is the maximum output current for the LDO sections?

Each of the two LDO sections can deliver up to 300 mA.

Does the LP87332ARHDTQ1 include internal sequencing?

No, the datasheet indicates that this specific variant does not feature internal hardware sequencers.