LM22673MR-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22673MR-5.0/NOPB is a Texas Instruments Simple Switcher step-down voltage regulator with a fixed 5 V output and 3 A maximum current capability. It operates from an input voltage range of 4.5 V to 42 V using a buck topology at a 500 kHz switching frequency. The device integrates a power MOSFET, error amplifier, oscillator, and protection circuits including thermal shutdown and current limiting. It is housed in an SO-PowerPAD-8 package and supports operation between -40 °C and +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel power MOSFET for efficient step-down conversion
• Built-in thermal shutdown and cycle-by-cycle current limiting for robust protection
• Fixed 5 V output option eliminates external feedback resistor requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• Power supply stages for embedded computing platforms
• Voltage regulation for automotive electronics subsystems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix against the manufacturer datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering part number matches the required package variant and temperature rating. Cross-reference the manufacturer's latest documentation to validate RoHS compliance status and any recent design changes or lifecycle notices before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required with up to 3 A load current. It is suitable for designs needing a wide input voltage range up to 42 V. Consider the SO-PowerPAD-8 package for its thermal performance and compact footprint. Verify that the 500 kHz switching frequency aligns with the available passive component sizes and EMI constraints of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2267x family of Simple Switcher regulators, which includes variants like the LM22670, LM22671, and LM22674. These devices share similar internal architectures but differ in output current ratings and package options. The LM22673 specifically targets applications requiring higher current capacity than the LM22671 while offering more flexibility than lower-current alternatives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM22673 variants with different output voltages or packages, such as LM22673QMX-ADJ/NOPB. For current upgrades, consider the LM22674 series. Ensure replacement parts maintain the same SO-PowerPAD-8 footprint and electrical characteristics if pin-to-pin compatibility is critical.