LM5175PWPR

Overview

The LM5175PWPR is a synchronous four-switch buck-boost DC/DC controller manufactured by Texas Instruments. It supports a wide input voltage range of 3.5 V to 42 V, with a maximum rating of 60 V. The device regulates output voltages from 800 mV to 55 V and delivers up to 20 A of output current. Operating frequencies are programmable between 100 kHz and 600 kHz. It features integrated 2 A MOSFET gate drivers and operates within a temperature range of -40°C to +125°C. The component is housed in an HTSSOP-28 package.

Feature Summary

• Synchronous four-switch topology enabling seamless transition between buck, boost, and bypass modes for high efficiency across varying input and output conditions.
• Integrated 2 A gate drivers eliminate the need for external driver circuits, simplifying design while supporting robust power stage performance.
• Comprehensive protection suite including input under-voltage lockout, output over-voltage protection, thermal shutdown, and cycle-by-cycle current limiting.

Applications

• Automotive start-stop systems
• Industrial PC power supplies
• USB Power Delivery interfaces
• LED lighting drivers

Procurement Notes

Verify the complete part number, including the PWPR suffix, to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity levels prior to assembly. Cross-reference the datasheet revision to validate electrical parameters against current production standards. Ensure supplier documentation matches the Texas Instruments manufacturing origin.

Selection Notes

Select this controller for applications requiring regulation where input voltage may exceed, fall below, or equal the output voltage. The wide VIN range accommodates battery discharge profiles and transient spikes. Consider the HTSSOP-28 package for thermal management requirements. Evaluate the need for spread spectrum modulation to reduce EMI peaks in sensitive environments.

Part Context

This component belongs to the LM5175 family of wide-input voltage controllers. It is designed for non-isolated DC/DC conversion tasks. The device integrates control logic with power stage driving capabilities. It serves as a central management unit for synchronous rectification in complex power architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.