TI LED driver for large color display to provide higher resolution

The day before, TI (TI) announced the launch of two suitable for large color display 16 channel constant current sink type LED driver (sink LED driver), so as to meet the electronic devices of the light emitting diode (LED) display large power complex requirements. The two driver provides dynamic brightness higher reliability and better control for the design staff, to display advertising, stadium scoreboard and video display device has higher resolution and efficiency.

TLC5940 is between the channel and the channel leading industry and the accuracy of the chip and the chip, thereby improving the overall quality of the display. Integrated circuit (IC) on each channel with individually adjustable 4096 level pulse width modulation (PWM) brightness control and 64 point correction function, the display can be selected up to 687 billion colors, to enhance color resolution. The equipment point calibration for luminance difference between the compensation system of LED single. In addition to TLC5940, TI also provides with gray PWM function low cost TLC5923 drive. The flexible power management chip with 128 level correction and on / off state function. Other features include TLC5940 and TLC5923 LED drive: - 30 Mhz data transmission rate; the input voltage range is between between 3 V to 5.5 V; each channel is TLC5940 and TLC5923 drive capacity was 120 mA and 80 mA; is between channel precision 1% (typical); between the chip and the chip precision 2.7% (typical); the (LED open circuit detection LOD) and thermal error (TEF) protection.