LM22674QMRX-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22674QMRX-5.0/NOPB is a SIMPLE SWITCHER step-down DC/DC switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 42 V and provides a fixed output voltage of 5.0 V. The device supports a maximum output current of 500 mA and integrates a power switch rated for this current capacity. It functions at a fixed switching frequency of 500 kHz, enabling the use of small external components. The unit is housed in an 8-pin SO-PowerPAD package and is qualified under AEC-Q100 standards for automotive applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a precision enable function for controlled startup sequencing and system power management.
• Includes comprehensive protection features such as thermal shutdown and cycle-by-cycle current limiting.
• Utilizes voltage-mode control architecture for stable regulation across varying load and line conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring regulated 5V supply from higher bus voltages
• Industrial control boards needing isolated or non-isolated step-down conversion
• Embedded computing modules utilizing SIMPLE SWITCHER regulators for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status per current manufacturer declarations. Confirm the 'Q' prefix indicates AEC-Q100 qualification for automotive reliability requirements. Ensure the 'R' in QMRX denotes reel packaging format rather than cut tape. Cross-reference the specific date code against the latest datasheet revision to ensure feature consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from inputs up to 42V with moderate current needs around 500mA. The integrated enable pin offers advantages over standard regulators where precise power-on sequencing is critical. Consider the 500kHz frequency trade-off between component size and electromagnetic interference compared to lower frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM22674 family within Texas Instruments' SIMPLE SWITCHER portfolio. It serves as the fixed 5V variant of the adjustable LM22674QMRE-ADJ/NOPB. The family shares topology and protection features but differs in output configuration and current handling capabilities relative to other series members like the LM22676.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22674QMRE-ADJ/NOPB serves as the adjustable counterpart within the same package and electrical specification range. LM22676QMRX-5.0/NOPB offers higher current capability (3A) using identical pinout and control interface for direct upgrade paths in high-load designs.