Just recently, Integrated Silicon Solution has rolled out the IS32LT3175, a LED driver with theatrical dimming in one small 8-pin SOP package. This results in 65 percent less components requiring less printed circuit board area.
The chip comes with low-noise and low-EMI as well as delivers a linear current source that is adjustable from 10 to 150mA into one or more LEDs. It incorporates switch de-bounce and latching logic to enable the use of low cost momentary contact switch. The switch On/Off state is held during start-stop operation when voltage drops below 6V for just a short period of time. Also, the IC can be remotely controlled by the car’s microcontroller or locally with a momentary contact switch for direct control of the LED lamp.
Moreover, all these advanced LED performances can be fine-tuned with simple resistors, eliminating the need for a microcontroller. The all-new S32LT3175 was stress tested for use in the extreme automotive environment with operation from –40 to +125°C. Included in the other features are open and short LED fault detection, thermal shut down and thermal rollback to boost system reliability and longevity.
Hamid Moaref has always been fascinated by cars and the automotive industry. His family has a longstanding association with the industry and has been in the tire business for the past 35 years. Raised in Dubai, Hamid attended Capilano University in Vancouver where he graduated with a BBA in marketing before attending an intensive course in magazine publishing in 2005. He has been the publisher and chief editor of Tires & Parts magazine for the past ten years.
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