TLC5955DCA

The TLC5955DCA is a 48-channel 16-bit PWM constant-current LED Sink Driver with open/short detection. Each channel has an individually-adjustable, pulse width modulation (PWM), grayscale (GS) brightness control with 65536 steps and 128 steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation between the R, G, B colour group. The eight-step maximum current control (MC) selects the maximum output current range for all channels of each colour group. GS, DC, BC and MC data are accessible with a serial interface port. It has two error flags of LED open detection (LOD) and LED short detection (LSD). The error detection results can be read with a serial interface port.

• Auto display repeat function
• Display timing reset function
• Auto data refresh (GS and DC only)
• UVLO sets default data
• Delay switching to prevent inrush current
• Maximum current (MC) control
• Dot correction (DC) control - 7 bits (128 steps) with a 26.2 to 100% range
• Global brightness control (BC) - 7 bits (128 steps) with a 10 to 100% range
• 33MHz Grayscale control clock
• Green product and no Sb/Br

Applications

Consumer Electronics, Commercial, Imaging, Video & Vision