LP873222RHDRQ1

Overview

The LP873222RHDRQ1 is an automotive-grade PMIC featuring two 2-A buck converters and two 300-mA LDOs. It operates within a 2.8-V to 5.5-V input range, providing adjustable outputs from 0.7 V to 3.36 V for the buck channels and 0.8 V to 3.3 V for the LDOs. The device integrates a 2-MHz switching frequency and supports I2C control with power sequencing capabilities. Packaged in a 28-pin VQFN (5x5 mm) with wettable flanks, it meets AEC-Q100 standards for operation between -40°C and +125°C.

Feature Summary

• Integrates dual high-current synchronous buck converters and dual low-dropout linear regulators for comprehensive power management.
• Supports programmable power sequencing and I2C interface for precise system startup control and monitoring.
• Features spread-spectrum clock generation to minimize electromagnetic interference during operation.

Applications

• Power supply design for Texas Instruments TDA3x processors
• Automotive infotainment systems requiring multiple regulated voltage rails
• ADAS sensor modules needing synchronized power sequencing

Procurement Notes

Verify the specific suffix 'RHDR' confirms the 28-VQFN package with wettable flanks and reel packaging. Confirm AEC-Q100 qualification status matches project requirements. Check datasheet revision history for any pinout or electrical parameter updates before finalizing the bill of materials.

Selection Notes

Select this component when designing for TDA3x processors requiring integrated buck and LDO regulation. Ensure the 2-A output current per buck converter meets load demands. Verify that the 2-MHz switching frequency aligns with EMI constraints and inductor size requirements compared to lower-frequency alternatives.

Part Context

This part belongs to the LP8732 family of automotive PMICs designed specifically for Texas Instruments TDA3x applications. It consolidates multiple discrete regulators into a single compact solution, reducing board space and simplifying power tree design for complex automotive electronic control units.

Replacement Considerations

LP873200RHDRQ1 offers similar functionality but lacks the integrated LDO channels found in the LP873222 variant.