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IR2172S

IR2172S Description

The IR2172S from Infineon Technologies is a high-performance current sense IC designed for precision current monitoring in power electronics applications. Packaged in an 8-SOIC form factor, this surface-mount device operates within an input voltage range of 9.5V to 20V, delivering a consistent 20mA output current. Although marked as obsolete, its robust design and reliability make it a viable choice for legacy systems or specific industrial applications. The device complies with ECCN EAR99 and REACH Unaffected standards, ensuring global usability without environmental restrictions.

IR2172S Features

• Precision Current Sensing: Accurate current measurement for motor control, inverters, and power supplies.
• Wide Input Voltage Range (9.5V–20V): Supports diverse power systems, enhancing flexibility in design.
• Surface-Mount (SOIC-8): Compact and suitable for high-density PCB layouts.
• Low Moisture Sensitivity (MSL 1): Reliable performance in varied environmental conditions.
• Tube Packaging: Ensures safe handling and storage during manufacturing.

Compared to similar models, the IR2172S stands out for its balanced voltage range and output stability, making it ideal for applications requiring consistent current feedback without additional signal conditioning.

IR2172S Applications

• Motor Drives: Real-time current monitoring for brushed/brushless DC motors.
• Power Inverters: Overcurrent protection and efficiency optimization in solar/wind energy systems.
• Industrial SMPS: Feedback control in switch-mode power supplies for precise load management.
• Legacy Systems: Maintenance or upgrades of older equipment where modern alternatives may not be compatible.

Conclusion of IR2172S

The IR2172S remains a technically sound solution for current sensing despite its obsolete status. Its wide voltage range, compact packaging, and reliability make it suitable for industrial and renewable energy applications. Engineers seeking a proven, no-frills current monitor for demanding environments may find this IC a pragmatic choice, though newer alternatives should be evaluated for forward-looking designs.