LP873245RHDRQ1

Overview

The LP873245RHDRQ1 is an automotive-grade PMIC featuring dual 2-A buck converters and two linear regulators. It operates within a 2.8 V to 5.5 V input range, providing adjustable outputs from 700 mV to 3.36 V for the buck channels. The device supports I2C control, power sequencing, and spread-spectrum clock generation. Designed for TDA3x processors, it ensures reliable performance across a -40°C to +125°C temperature range in a 28-pin VQFN package.

Feature Summary

• Integrates dual high-current buck converters with two additional linear regulators for comprehensive power management.
• Supports I2C interface for programmable configuration and dynamic control of output parameters.
• Includes built-in power sequencing logic and spread-spectrum clock generation to minimize electromagnetic interference.
• Delivers power good signals and thermal shutdown protection for robust system reliability.

Applications

• Power supply solutions for Texas Instruments TDA3x automotive processors
• Advanced driver assistance systems (ADAS) requiring multi-rail power regulation
• Automotive infotainment and display controller power architectures

Procurement Notes

Verify that the specific suffix RHDRQ1 matches the required automotive qualification and package variant. Confirm I2C addressing and pin compatibility with the target processor design. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Cross-reference the latest datasheet revision to validate electrical characteristics against current application requirements.

Selection Notes

Select this component when designing for TDA3x processors requiring integrated buck and LDO regulation. Consider the 2-A output capability and I2C configurability for flexible voltage rails. Evaluate the VQFN-28 footprint constraints and thermal dissipation needs. Verify that the 2.8 V minimum input voltage aligns with the system's available power source.

Part Context

This part belongs to the LP8732 series of specialized automotive PMICs. It is engineered specifically to support complex processor architectures like the TDA3x family. The device consolidates multiple power stages into a single compact solution, reducing board space and simplifying bill-of-materials for automotive electronic control units.

Replacement Considerations

LP873200RHDRQ1 offers similar dual buck functionality but may differ in specific regulator configurations or output capabilities. LP873222RHDRQ1 provides four outputs including two buck and two LDO channels with potentially different current ratings. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.

FAQ

What is the maximum input voltage for the LP873245RHDRQ1?

The maximum operating input voltage is 5.5 V.

Does the LP873245RHDRQ1 support I2C communication?

Yes, the device features an I2C interface for programmable control of its converters and regulators.

What is the operating temperature range of this PMIC?

The device is rated for operation between -40°C and +125°C.