Standalone RGB LED driver For In-car Lighting


Inova Semiconductors has announced a new standalone smart RGB LED driver and controller, the INLC100Q16, for in-car LED lighting. The chip is the newest product in Inova’s ISELED series that substantially reduces costs, simplifies control and enables dynamically changing light.

“ISELED is an open alliance with the objective to provide a complete system solution for automotive lighting solutions. The alliance has been announced on November 8th, 2016 including a revolutionary system approach for automotive interior lighting.”

In-car ambient lighting will typically comprise of 10 to 30 LEDs mounted on a flexible light strip. The new RGB LED driver controls each group of one red, green and blue LEDs forming a ‘pixel’. This replaces the present cubercome and costly implementation with multiple microcontrollers and a slow LIN bus.


The firm notes that the INLC100Q16 is the first standalone driver available that enables manufacturers to custom design their own choice of external LED strips. Until now, ISELED smart LED drivers have only been available for purchase pre-integrated in an LED module.

The new chip will be used to construct custom LED chains that can be controlled via a bidirectional two-wire differential bus, enabling up to 4079 daisy-chained driver devices in a single array. Each of these devices controls up to three LEDs by means of PWM-controlled outputs.

The INLC100Q16 packs functions such as color/brightness control and low light dimming support. The driver can also be used as a signal converter in conjunction with ISELED LED modules to convert GPIOs from a microcontroller using single-ended signaling to the differential signaling used on the ISELED bus.

Modular DC/DCs Keep BOM Under Control

Other features supported by the chip include calibration of a LED’s brightness and the dominant wavelength, temperature compensation for red LEDs and a built-in one-time programmable (OTP) memory for storing calibration and compensation data values. The smart driver also includes device authentication features.

The chip includes a built-in oscillator, thus eliminating the need for any ‘extra-cost’ external components. It only requires a single supply voltage and integrates a built-in LDO (low dropout regulator), a temperature sensor and comprehensive diagnostic features.

Offered in a compact 16-pin WETQFN package, the device measures just 3×3 mm². It has a very broad operating temperature range from -40°C to 105°C and has been qualified in accordance with the AEC-Q100 automotive test specifications.

The INLC100Q16 is sampling now.

More information:



Please enter your comment!
Please enter your name here

Are you human? *