New High-Speed Digital-Input Current Limiters from STMicroelectronics
New Devices are Housed in Miniature QFN-48 Package and Provide Robust Protection Against Current Spikes
STMicroelectronics has introduced two high-speed digital-input current limiters that set new standards
for circuit protection in factory automation. The SCLT3-8BQ7 and CLT01-38SQ7 provide industrial
Programmable Logic Controllers (PLCs) - the “brains” of smart factories and industrial robots -
with fast, robust protection against unwanted input-signal current spikes while reducing power consumption,
board space, and component costs.
The new devices meld ST's long-standing leadership in Transient Voltage Suppressors¹ with its state-of-the-art packaging technology. Both devices are housed in the highly compact QFN-48L (7x7mm) package with a large exposed thermal pad that optimizes power dissipation at ambient temperatures greater than 100°C.
The high-speed inputs and outputs are fully compliant with the requirements of best-in-class PLCs.
The CLT01-38SQ7 also delivers robustness compliant with the most stringent international EMC (Electromagnetic Compatibility) standards such as IEC 61000-4.2, IEC61000-4.4, and IEC6100-4.5.
Key Features of the Current Limiter include:
- 8 high-speed SPI protected outputs
- 8/16-bit high-speed SPI output
- High-side inputs with common ground
- Integrated 5V regulator
- 30V+ reverse polarity protection
- Energy-free LED output signal for visual status indication
- 78mW/channel power-dissipation capability
- Temperature/voltage alarm options
¹ According to independent market analysts IHS, ST was the No.1 supplier
of Transient Voltage Suppressors worldwide in 2015, with a market share of nearly 15%.
For more information on the SCLT3-8BQ7 Current Limiter with Digital Filter, visit the ST Website at
STMicroelectronics SCLT3-8BQ7 product page
For the CLT01-38SQ7 Digital Input Current Limiter, more information is available on the ST Website at STMicroelectronics CLT01-38SQ7 product page
The company's Web site address is www.st.com.
[Reprinted with kind permission from STMicroelectronics - Release Date 18th April, 2016]