LP87561IRNFTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LP87561IRNFTQ1 is an automotive-grade, four-phase DC/DC buck converter from Texas Instruments. It integrates high-side and low-side power switches to deliver up to 16 A of output current. The device operates with a switching frequency of 3 MHz and supports input voltages ranging from 2.8 V to 5.5 V. It provides an adjustable output voltage range from 0.6 V to 3.36 V. The component is housed in a 26-pin VQFN-HR package (4.5x4 mm) and is qualified to AEC-Q100 standards for operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates four internal power phases to maximize efficiency and minimize external passive component count
• Supports high-frequency operation at 3 MHz to reduce overall solution footprint
• Includes integrated synchronous rectification for improved load regulation and thermal performance
• Features programmable soft-start and sequencing capabilities for controlled power-up transitions

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Telematics control unit voltage regulation
• Advanced driver assistance systems (ADAS) processing boards
• Digital cockpit display driver power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TQ1' against the manufacturer's official ordering guide to confirm tape-and-reel packaging and lead-free status. Ensure the part number matches the exact pinout and thermal pad configuration required by your PCB layout. Cross-reference the datasheet revision date to confirm compatibility with your design specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single IC must provide high-current delivery for multiple domains within a constrained area. The 3 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the application requires four independent or combined phases rather than dual-phase solutions. Confirm that the 5.5 V maximum input voltage aligns with the vehicle's electrical architecture.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LP8756x-Q1 family of high-efficiency buck converters designed specifically for automotive applications. It shares architectural similarities with the LP87565-Q1 but offers higher switching frequency and current density. The family is characterized by integrated switches and robust protection features suitable for harsh automotive environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers include LP87561ARNFTQ1 and LP87561CRNFTQ1. These variants share identical functional specifications and pinouts but differ in temperature grade or material composition. Verify package dimensions and thermal characteristics before substitution.