TEXAS INSTRUMENTS TLC5940RHBR. 芯片, LED显示驱动器
The is a 16-channel constant-current LED Sink Driver for use with LED signboards. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink dot correction. The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels. It features two error information circuits. The LED open detection LOD indicates a broken or disconnected LED at an output terminal. The thermal error flag TEF indicates an over-temperature condition.