Lumissil's IS32LT3168 is an LED driver featuring an integrated Hall effect sensor, expanding the company's range of automotive lighting solutions. Housed in a small SOP-8 package, this standalone single-channel linear LED driver can be fully configured via resistors, eliminating the need for a processor and additional software. It offers a single-channel adjustable constant current source output with PWM dimming control or automatic Gamma-corrected LED luminosity fading control. Additionally, it incorporates an integrated omnipolar Hall effect sensor that can switch itself or other drivers on/off, making it suitable for automotive or industrial lighting where a magnet could be used to control LED lights.
Operating over a wide input voltage range (6.5 V to 28 V; maximum 36 V) and able to withstand a 40 V load dump, the IS32LT3168 also integrates a low-power and high-sensitivity unipolar Hall effect switch for contactless LED control. Its AEC-Q100 qualification ensures compliance with stringent automotive quality requirements, while its ability to meet the extended temperature range makes it suitable for the industrial market.
The Hall effect sensor's polarity can be configured by floating or grounding an input control pin, and its output can be utilized to enable/disable the driver's channel output or control other drivers or onboard circuits. Furthermore, the IS32LT3168's channel output can be configured for gamma-corrected fading, ensuring that LED luminosity appears linear to human eyes. To enhance system reliability, the device can detect channel output pin or current setting pin short-to-ground faults, perform thermal shutdown, and initiate roll-off if the temperature exceeds an acceptable threshold, thereby ensuring a prolonged device lifespan.
Configurable current from 20 mA to 200 mA
Ultra-low standby current (50 µA)
Omnipolar Hall effect switch sensor
ENB input pin for LED on/off with Gamma corrected fade in/out
Interior illumination
Glove boxes
Vanity mirrors
Trunk lights
Puddle lamps in car doors
Interior lighting for washers/dryers/refrigerators
White goods
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