TLC5917Q Automotive 8-Channel LED Sink Driver IC – Constant-Current Driver with Short Detection for Gear Shift Lighting
The TLC5917Q is an 8-bit constant-current LED sink driver specifically qualified for automotive applications, offering reliable performance for interior lighting and indicator systems.
This versatile driver IC is designed to work individually or cascaded for larger LED arrays, making it ideal for gear shift position indicators and interior control lighting.
Each of the eight output channels can be independently controlled and programmed on or off by the user, providing flexible lighting configuration options.
The constant sink current for each channel is set through a single external resistor, ranging from 5 mA to 120 mA per output.
With a maximum output voltage of 17V, this driver supports either single LEDs per output or multiple LEDs on a single string configuration.
The device features excellent output current accuracy with less than ±3% variation between channels and ±6% between ICs for consistent brightness.
Integrated diagnostics include open-load detection, short-load detection, and overtemperature protection for robust system reliability.
The TLC5917Q is the only variant in its series that includes VLED short-circuit detection, providing enhanced fault monitoring capability.
A 256-step programmable global current gain allows precise dimming control for different lighting brightness requirements.
The device operates with a 3V to 5.5V supply voltage and supports a 30MHz clock frequency for fast response times.
Qualified to AEC-Q100 Grade 1 standards, this IC operates reliably from -40°C to 125°C ambient temperature.
The Schmitt trigger input ensures stable signal reception in electrically noisy automotive environments.
Thermal shutdown protection prevents damage from overtemperature conditions, extending the lifespan of both the driver and LED array.
This automotive-grade LED driver delivers the precision, diagnostics, and durability essential for modern vehicle interior lighting and indicator systems.