Lumissil's IS32LT3183A LED controller is designed for ambient and animated automotive lighting applications. It features a fully-integrated LIN RGB+W LED controller with built-in high-voltage GPIO outputs, a programmable MCU, and a LIN protocol engine. The controller is compliant with the latest LIN standards and is ideal for cost-effective ambient light modules connected to the automotive LIN bus.
The IS32LT3183A is designed for ambient and animated automotive lighting applications and is compliant with LIN 2.0 A/2.1 A/2.2 A as well as SAE J2602 bus standards. It offers accurate color rendition, software animation patterns, LED fade and color transition functions. The controller also has built-in direct and indirect temperature monitoring, enabling temperature compensation to ensure accurate color and brightness levels over the full operating temperature range of -40°C to +125°C.
The IS32LT3183A's flexible GPIOs can be programmed for either LED driver or serial bus interface functionality. They can be configured as an I²C master or SPI master interface to create a LIN to serial bus bridge or they can be configured as standard I/Os with ADC, interrupt and de-bounce capability. When configured as an LED driver, the four high voltage I/Os can sink up to 60 mA of LED current with 16-bit PWM dimming and spread spectrum for lowering the EMI noise floor.
Overall, the IS32LT3183A LED controller delivers reliable performance, even when the vehicle's supply fluctuates, and includes built-in protection features such as 40 V load dump, battery overvoltage, and undervoltage detection.
LIN to SPI or LIN to I²C bridge
Compliant to LIN 2.2 A
Support SNPD (BSM) auto addressing
LED color calibration via matrix calculation
Flash storage for calibration values
Intensity control (linear or logarithmic)
Dimming and color transition function with programmable transition time
Up to 16-bit LED color range
PWM with spread spectrum to optimize EMI
LED temperature compensation
Ambient lighting
Instrument cluster
Footwell and door lights
Console button backlight
Seating lighting
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