LP873345RHDR

Overview

The LP873345RHDR is a Texas Instruments PMIC featuring two high-current buck converters and two LDOs in a VQFN-28 package. Buck outputs deliver 3 A with voltage ranges of 0.7 V to 3.36 V. LDO outputs provide 300 mA, ranging from 0.8 V to 3.3 V. The device operates on an input supply of 2.8 V to 5.5 V. It supports a switching frequency of 2 MHz and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates dual high-current synchronous buck converters for primary power rails
• Includes dual low-dropout linear regulators for noise-sensitive loads
• Features integrated sequencing control for multi-rail startup management

Applications

• Industrial appliances requiring compact power solutions
• Test and measurement equipment needing precise voltage regulation
• Embedded systems utilizing multiple power domains

Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffix alignment. Confirm that the specific package variant matches the design requirements. Cross-reference the datasheet revision history to validate technical specifications before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring four distinct regulated outputs from a single IC footprint. Ensure the input voltage remains within the specified 2.8 V to 5.5 V window. Verify thermal dissipation capabilities for the VQFN-28 package under maximum load conditions.

Part Context

This device belongs to the LP8733xx family of specialized power management ICs. It consolidates multiple regulator stages into a single surface-mount solution. The architecture targets applications demanding high current density and minimal board space utilization.

Replacement Considerations

LP87334FRHDR