LM34937QPSQ/NOPB

DC DC Switching Controllers Overview

The LM34937QPSQ/NOPB is an automotive-grade wide input range synchronous buck controller manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 60 V and supports output currents up to 10 A. The device features a fixed 500 kHz switching frequency, integrated high-side and low-side drivers, and comprehensive protection mechanisms including cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout. Qualified to AEC-Q100 standards, it ensures reliability in demanding environments with an operating temperature range from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Wide input voltage range supporting 4.5 V to 60 V operation for versatile power architectures
• Integrated synchronous buck control with dedicated high-side and low-side gate drivers
• Automotive qualification compliant with AEC-Q100 standards for enhanced reliability
• Built-in protection features including thermal shutdown and cycle-by-cycle current limiting

DC DC Switching Controllers Applications

• Automotive infotainment systems requiring robust power regulation
• Industrial motor control applications needing wide input tolerance
• Distributed power distribution networks in vehicle electronics
• High-power LED lighting drivers in automotive contexts

DC DC Switching Controllers Procurement Notes

Verify the specific suffix QPSQ confirms automotive grade qualification and WQFN-24 packaging when sourcing. Ensure compatibility with your PCB footprint and thermal management requirements. Confirm RoHS compliance status through official manufacturer documentation prior to final procurement decisions. Cross-reference the full part number against distributor catalogs to avoid substitution errors.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring a wide input voltage window up to 60 V without external bias supplies. Consider the fixed 500 kHz frequency for component size optimization versus noise constraints. Evaluate the 10 A drive capability against your external MOSFET selection. Verify that the synchronous topology aligns with your efficiency targets and thermal design goals.

DC DC Switching Controllers Part Context

This component belongs to the LM3493x family of wide input synchronous buck controllers designed for high-power applications. It shares architectural similarities with other automotive-grade PMICs from Texas Instruments but distinguishes itself through its specific 60 V input rating and integrated driver strength. The family targets industrial and automotive sectors where reliability under varying line conditions is critical.

DC DC Switching Controllers Replacement Considerations

LM34937QPSQ/NOPB