LM5168FQDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5168FQDDARQ1 is an automotive-grade synchronous buck DC-DC converter from Texas Instruments, designed for high-voltage applications. It supports a wide input voltage range of 6 V to 120 V and delivers up to 300 mA of output current. The device features adjustable output voltage from 1.2 V to 90 V with a single output configuration. Operating at a fixed switching frequency of 1 MHz, it maintains low quiescent current of 10 uA. The component functions reliably within a junction temperature range of -40°C to +150°C and is housed in a WSON-8 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports wide input voltage range from 6 V to 120 V for flexible system integration
• Integrated synchronous rectification for improved efficiency and compact design
• Automotive qualification ensuring reliability under harsh operating conditions
• Ultra-low quiescent current minimizes power consumption during standby modes

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable power regulation
• Industrial control modules operating with high-voltage bus lines
• Battery management systems in electric vehicles
• General-purpose high-voltage point-of-load conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix FQDDARQ1 matches the required automotive grade and packaging format. Confirm that the WSON-8 footprint aligns with the PCB layout constraints. Ensure the supplier provides valid traceability documentation for automotive components. Cross-reference the datasheet revision to guarantee compatibility with existing design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed standard 48 V limits but remain below 120 V. The 300 mA output current suits moderate load requirements without excessive thermal management. Consider the 1 MHz switching frequency for balancing EMI performance and passive component size. Evaluate the need for automotive AEC-Q100 certification against the application's functional safety requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM516x family of high-voltage synchronous buck converters. It shares architectural similarities with the LM5169 series but differs in output current capabilities and specific automotive grading variations. The LM5168 series targets applications needing robust performance in high-voltage environments while maintaining low static power consumption.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5168FEVM serves as an evaluation module reference rather than a direct pin-to-pin replacement. No direct public substitute part numbers are confirmed for this specific automotive variant.