TLC5910

The TLC5910 is a constant current driver, incorporating a shift register, data latch, and constant current circuitry with current value adjustable, PLL circuitry for gray scale control clock generation, and 1024 gray scale display using pulse width control. The output current is a maximum of 80 mA with 16 bits, and the current value of constant current output can be set by one external resistor. The TLC5910 has two channel I/O ports. The brightness deviation between LED modules (ICs) can be adjusted by external data input from a display data port. The brightness control for the panel can be accomplished by the brightness adjustment circuitry. Independently of these functions, the TLC5910 incorporates the shift register and data latch to correct the deviation between LEDs adjusting output current using data from a dot correction data port. Moreover, the device incorporates watchdog timer (WDT) circuitry, which turns the constant current output off when a scan signal is stopped at the dynamic scanning operation. TLC5910 incorporates thermal shutdown (TSD) circuitry, which turns constant current output off when the junction temperature exceeds the limit. It also incorporates LOD (LED open detection) circuitry, which creates an error signal output when LED disconnection occurs and test mode functions detect LED open or short conditions.