LM5156HQPWPRQ1

Overview

The LM5156HQPWPRQ1 is an automotive-grade DC-DC switching controller designed for boost, flyback, and SEPIC topologies. It supports a wide input voltage range from 2.97V to 60V and operates at switching frequencies between 100kHz and 2.2MHz. The device features a 14-HTSSOP package and is qualified to AEC-Q100 standards. It functions within a temperature range of -40°C to +125°C, offering control characteristics including current limit, enable, frequency control, power good, and soft start capabilities.

Feature Summary

• Supports multiple non-isolated topologies including boost, flyback, and SEPIC configurations.
• Automotive qualification compliant with AEC-Q100 standards for reliability.
• Integrated protection and control features such as current limiting, soft start, and power good signaling.

Applications

• Automotive power distribution systems
• Boost converter designs for vehicle electronics
• SEPIC applications requiring wide input voltage ranges

Procurement Notes

Verify the specific suffix 'RQ1' against the manufacturer's official datasheet to confirm it denotes the reel packaging variant and automotive grade qualification. Ensure the HTSSOP-14 footprint matches your PCB design requirements. Confirm that the 2.97V minimum operating voltage aligns with your system's battery or supply rail conditions during all operational states.

Selection Notes

Select this component when designing automotive circuits requiring flexible topology options like boost or SEPIC with a wide input voltage span up to 60V. The high-frequency operation up to 2.2MHz allows for smaller passive components compared to lower-frequency alternatives. Ensure the application environment stays within the specified -40°C to +125°C operating range and meets AEC-Q100 reliability requirements.

Part Context

This part belongs to the LM5156x family of wide VIN controllers from Texas Instruments. It is specifically engineered for automotive applications, distinguishing itself from standard industrial parts through its AEC-Q100 qualification. The 'H' variant typically indicates enhanced performance or specific feature sets within the broader LM5156 series, tailored for robust power management in harsh automotive environments.

Replacement Considerations

LM51561HQPWPRQ1: Similar automotive boost/flyback/SEPIC controller with comparable specifications.

FAQ

What switching frequencies does the LM5156HQPWPRQ1 support?

The device supports a programmable switching frequency range from 100 kHz to 2.2 MHz.

Is the LM5156HQPWPRQ1 suitable for isolated applications?

Yes, it supports flyback topology which provides isolation, as well as non-isolated boost and SEPIC configurations.