LM22675MRX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22675MRX-ADJ/NOPB is a step-down switching voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It integrates a 1A power switch and operates with an input voltage range of 4.5V to 42V. The device features a fixed internal switching frequency of 500kHz, enabling the use of small external components. It provides an adjustable output voltage starting from 1.285V with ±1.5% feedback reference accuracy. The component supports surface-mount installation in an 8-SO-PowerPAD package and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 200mΩ N-channel MOSFET for efficient high-current step-down conversion
• Includes precision enable input for simplified power sequencing and control
• Features built-in soft-start to limit inrush current during startup
• Maintains stability when used with low equivalent series resistance (ESR) capacitors

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems
• Telecommunications and datacom infrastructure
• Embedded system power distribution
• Conversion from standard 24V, 12V, or 5V input rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required tape and reel configuration for automated assembly. Confirm the specific revision level aligns with design requirements. Ensure the SO-PowerPAD thermal pad soldering process meets board layout guidelines for adequate heat dissipation. Check RoHS compliance documentation if environmental regulations apply to the final product assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when an adjustable output voltage is required within the 4.5V to 42V input window. The 500kHz switching frequency allows for smaller inductors compared to lower-frequency alternatives. Choose this part over fixed-output variants like the LM22675MRE-5.0/NOPB only if circuit flexibility for voltage setting is necessary. Ensure the load current does not exceed the 1A continuous rating under worst-case thermal conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM22675 series, which offers 1A output capability. It differs from the LM22674 series, which provides 500mA output, and the automotive-grade LM22675Q variant. The MRX suffix indicates a specific reel packaging format distinct from the MRE cut-tape option. It serves as a modern replacement for legacy devices like the LM2575 in compact designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22675MRX-ADJ is functionally compatible with LM22675MRX-ADJ-NOPB. Verify pinout compatibility when substituting with older National Semiconductor versions.