ZHCSIO0A December 2017 – August 2018 TLC6C5724-Q1
PRODUCTION DATA.
In automotive indicator and local dimming backlighting applications, the demand for multi-channel constant-current LED drivers is increasing to achieve uniformity of LED brightness and color temperature. System-level safety considerations require fault-detection capability and device self-check features.
The TLC6C5724-Q1 device is an automotive 24-channel constant-current RGB LED driver with LED diagnostics. The TLC6C5724-Q1 device provides up to 50-mA output current set by an external resistor. The current can be adjusted by 7-bit dot correction with two subranges for individual output and an 8-bit brightness control for the outputs of each color group. The brightness can be adjusted individually for each channel through a 12-,10-, or 8-bit grayscale control. Fault-detection circuits are available to detect system faults including LED faults, adjacent-pin short faults, reference-resistor faults, and more. Negate bit toggle and LOD-LSD self-test provide a device self-check function to improve system reliability. Configurable slew-rate control optimizes the noise generation of the system and improves the system EMC performance. Output -channel group delay helps to reduce inrush current to optimize the system design. The SDI and SDO pins allow more than one device to be connected in a daisy chain for control through one serial interface.