LP873220RHDTQ1

Overview

The LP873220RHDTQ1 is an automotive-grade PMIC featuring two high-current buck converters and two linear regulators. It operates within a 2.8 V to 5.5 V input range, delivering up to 2 A per buck output (0.7 V to 3.36 V) and 300 mA per LDO output (0.8 V to 3.3 V). The device utilizes a 2 MHz switching frequency with spread-spectrum capabilities. It includes I²C control, programmable sequencing, remote sensing, and comprehensive protection features like OVP, UVLO, and thermal shutdown in a 28-pin VQFN package.

Feature Summary

• Dual high-current buck converters with automatic PWM/PFM mode for wide-range efficiency
• Integrated dual linear regulators providing low-noise power supplies
• I²C-compatible serial interface for configuration and monitoring
• Programmable power sequencing and soft-start capabilities

Applications

• TDA3x processor power management systems
• Automotive infotainment units
• Advanced driver assistance systems (ADAS)
• Vehicle telematics controllers

Procurement Notes

Verify the specific suffix RHDT against official Texas Instruments documentation to confirm pinout compatibility and thermal pad specifications. Ensure the component meets AEC-Q100 Grade 1 requirements for your target application temperature range. Cross-reference the datasheet revision date to validate feature availability and electrical characteristics prior to finalizing procurement orders.

Selection Notes

Select this component when designing for TDA3x processors requiring integrated buck and LDO outputs. It is suitable for applications needing precise voltage regulation with I²C configurability. Consider the 28-VQFN package constraints for PCB layout. Verify that the required output currents align with the 2 A buck and 300 mA LDO limits specified in the technical data.

Part Context

This part belongs to the LP8732-Q1 family of specialized power management ICs designed for automotive environments. It integrates multiple power stages into a single compact solution, reducing bill-of-materials count compared to discrete implementations. The family targets complex SoC power domains common in modern automotive electronics.

Replacement Considerations

LP873222RHDTQ1

FAQ

Does the LP873220 support remote voltage sensing?

Yes, the device supports remote voltage sensing to compensate for IR drops between the regulator output and the load point.

What protection features are included?

The device includes overcurrent protection, short-circuit protection, over-temperature warning/protection, overvoltage protection (OVP), and undervoltage lockout (UVLO).