LM5176QPWPRQ1

Overview

The LM5176QPWPRQ1 is an automotive-grade synchronous four-switch buck-boost controller designed for wide input voltage applications. It supports a VIN range of 4.2 V to 55 V and delivers output voltages from 800 mV to 55 V. The device operates with adjustable switching frequencies between 100 kHz and 600 kHz, enabling flexible design optimization. It features a maximum duty cycle of 100% and is qualified under AEC-Q100 standards. The component is housed in a 28-pin HTSSOP package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Synchronous four-switch topology supporting both buck and boost modes
• Wide input voltage capability for diverse power architectures
• Adjustable switching frequency for efficiency and size optimization
• Automotive qualification ensuring reliability in harsh environments

Applications

• Automotive infotainment systems
• Body control modules
• ADAS sensor power supplies
• Vehicle lighting systems

Procurement Notes

Verify the specific suffix 'PWPRQ1' against the official Texas Instruments datasheet to confirm pinout, thermal characteristics, and exact packaging details. Ensure that the AEC-Q100 qualification status aligns with your project's reliability requirements. Cross-reference the HTSSOP-28 footprint dimensions with your PCB layout guidelines before finalizing procurement.

Selection Notes

Select this controller when a single stage must handle varying input voltages above and below the target output. Consider the 100 kHz to 600 kHz frequency range to balance EMI performance against passive component size. Evaluate the 55 V maximum input rating against peak line conditions. The synchronous four-switch design offers higher efficiency compared to traditional three-switch topologies across the entire operating range.

Part Context

This part belongs to the LM5176 family of wide-VIN controllers from Texas Instruments. It complements other automotive PMICs by providing flexible voltage conversion capabilities. The device integrates protection features typical of the series, such as overcurrent protection and thermal shutdown, ensuring robust operation in demanding automotive electrical systems.

Replacement Considerations

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