LP8728QSQX-A/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LP8728QSQX-A/NOPB is a quad-output step-down DC/DC converter from Texas Instruments, designed for automotive applications. It integrates four high-efficiency buck converters with fixed output voltages of 1.2V, 1.5V, 1.8V/2.65V, and 3.3V. Each channel supports up to 1A load current. The device operates within an input voltage range of up to 5.5V and features a switching frequency of 3.37MHz. It is qualified to AEC-Q100 standards and functions reliably across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates four independent high-efficiency step-down DC-DC converters in a single package
• Provides fixed output voltage options including 1.2V, 1.5V, 1.8V/2.65V, and 3.3V
• Supports individual control for each converter channel with high current capability
• Automotive-grade qualification ensuring reliability in harsh operating environments

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring multiple regulated power rails
• Digital signal processing units in vehicle electronics
• Power distribution networks for automotive sensors and controllers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'A' against the official datasheet to confirm the exact output voltage configuration, as variations may exist within the family. Ensure the WQFN package type matches your PCB footprint requirements. Confirm AEC-Q100 compliance documentation is available for your quality assurance processes before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for multiple low-voltage rails is required in automotive designs. The fixed output configuration simplifies external component selection compared to adjustable regulators. Consider the 3.37MHz switching frequency for EMI management and the thermal performance of the exposed pad package for heat dissipation under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LP8728-Q1 series of quad-output step-down converters. It shares architectural similarities with other members like the LP8728QSQE-A/NOPB but differs in package or marking details. The series is engineered to replace discrete regulator solutions, reducing board space and assembly complexity in modern automotive electronic control units.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LP8728QSQE-A/NOPB and LP8728QSQX-B/NOPB. Verify pin compatibility and output voltage specifications before substitution. The LP8728C-Q1 variant may offer different thermal or electrical characteristics.