STMicroelectronics SCLT3-8BQ7 and CLT01-38SQ7 digital-input current limiters

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STMicroelectronics has introduced two high-speed digital-input current limiters for circuit protection in factory automation.

The SCLT3-8BQ7 and CLT01-38SQ7 provide industrial programmable logic controllers (PLCs) with fast, robust protection against unwanted input-signal current spikes while reducing power consumption, board space and component costs. Both devices are housed in the QFN-48L (7 x 7 mm) package with a large exposed thermal pad that optimises power dissipation at ambient temperatures greater than 100°C.

Other features include: eight high-speed SPI protected outputs; 8-/16-bit high-speed SPI output; high-side inputs with common ground; an integrated 5 V regulator; 30 V+ reverse polarity protection; an energy-free LED output signal for visual status indication; a 78 mW/channel power-dissipation capability; and temperature/voltage alarm options.

The CLT01-38SQ7 also delivers robustness compliant with stringent international EMC (electromagnetic compatibility) standards such as IEC 61000-4.2, IEC61000-4.4 and IEC6100-4.5.

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