LM22670QMR-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22670QMR-ADJ/NOPB is an automotive-grade, adjustable step-down voltage regulator from Texas Instruments. It operates within a wide input voltage range of 4.5 V to 42 V and delivers up to 3 A of output current. The device features a fixed switching frequency of 500 kHz and includes an integrated 120 mΩ N-channel MOSFET. Designed for robust performance, it supports operation across an extended temperature range from -40°C to +125°C. The component utilizes internally compensated voltage mode control and is stable with low ESR ceramic capacitors. It is housed in an 8-PowerSOIC package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliable vehicle integration
• Integrated high-side N-channel MOSFET eliminates external gate drive requirements
• Internally compensated control loop simplifies design and ensures stability with ceramic output capacitors
• Wide input voltage capability accommodates various power supply architectures

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Electronic control unit (ECU) voltage regulation
• Industrial sensor node power supplies
• General-purpose DC-DC conversion in harsh environments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'ADJ' confirms the adjustable output variant rather than a fixed voltage option. Ensure the 'QMR' designation matches the required 8-PowerSOIC package type for your PCB layout. Confirm that the 'NOPB' indicator aligns with your environmental compliance requirements. Cross-reference the manufacturer part number against official distributor catalogs to ensure authenticity and traceability before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage is required within a 4.5 V to 42 V input window. It is suitable for designs needing up to 3 A continuous current with high efficiency. Consider the 500 kHz switching frequency for balancing component size and thermal performance. The internal compensation reduces external component count compared to non-compensated alternatives. Ensure the application environment falls within the specified -40°C to +125°C operating range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family of buck regulators, emphasizing ease of use through internal compensation. The LM22670 series provides a scalable solution for medium-power applications requiring automotive reliability. It complements lower-current variants like the LM22671 and higher-power options within the broader portfolio. The QMR package variant offers a compact footprint suitable for space-constrained automotive and industrial boards.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM22670 variants with different output configurations or packages, such as LM22670QMR-5.0/NOPB for fixed 5V output. For identical functionality but different packaging, consider LM22670QTJE-ADJ/NOPB in TO-263-7. Verify pinout compatibility and thermal characteristics when swapping between package types.