TLC5955 Series

48ch, 16bit PWM LED driver with dot-correction, brightness control, open/Short Detection

Catalog

48ch, 16bit PWM LED driver with dot-correction, brightness control, open/Short Detection

Part	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply (Min) [Min]	Applications	Voltage - Output	Current - Output / Channel	Topology	Number of Outputs	Package / Case [custom]	Package / Case	Package / Case [custom]	Supplier Device Package	Voltage - Supply (Max)	Type	Dimming
Texas Instruments TLC5955DCA	Surface Mount	85 °C	-40 °C	3 V	Signage	10 V	30 mA	Shift Register	48	6.1 mm	56-PowerTFSOP	0.24 in	56-HTSSOP	5.5 V	Linear	Analog
Texas Instruments TLC5955DCAR	Surface Mount	85 °C	-40 °C	3 V	Signage	10 V	30 mA	Shift Register	48	6.1 mm	56-PowerTFSOP	0.24 in	56-HTSSOP	5.5 V	Linear	Analog
Texas Instruments TLC5955RTQT	Surface Mount	85 °C	-40 °C	3 V	Signage	10 V	23.9 mA 31.9 mA	Shift Register	48		56-VFQFN Exposed Pad		56-QFN (8x8)	5.5 V	Linear
Texas Instruments TLC5955RTQR	Surface Mount	85 °C	-40 °C	3 V	Signage	10 V	23.9 mA 31.9 mA	Shift Register	48		56-VFQFN Exposed Pad		56-QFN (8x8)	5.5 V	Linear

Catalog

48ch, 16bit PWM LED driver with dot-correction, brightness control, open/Short Detection

Key Features

• 48 Constant-Current Sink Output ChannelsSink Current Capability with Maximum MC, DC, and BC Data:23.9 mA (VCC≤ 3.6 V, MC = 5)31.9 mA (VCC> 3.6 V, MC = 7)Grayscale (GS) Control:16-Bit (65,536 Steps) with Enhanced Spectrum or Conventional PWMMaximum Current (MC) Control:3 Bits (8 Steps) with a 3-mA to 30-mA Range3 MC Sets for Each Color GroupDot Correction (DC) Control:7 Bits (128 Steps) with a 26.2% to 100% RangeGlobal Brightness Control (BC):7 Bits (128 Steps) with a 10% to 100% Range3 BC Sets for Each Color GroupLED Power-Supply Voltage: Up to 10 VVCC: 3.0 V to 5.5 VConstant-Current Accuracy:Channel-to-Channel: ±2% (typ), ±5% (max)Device-to-Device: ±2% (typ), ±4% (max)Data Transfer Rate: 25 MHzGrayscale Control Clock: 33 MHzAuto Display RepeatDisplay Timing ResetAuto Data Refresh (GS and DC Only)LED Open Detection (LOD)LED Short Detection (LSD)UVLO Sets Default DataDelay Switching to Prevent Inrush CurrentOperating Temperature: –40°C to +85°C48 Constant-Current Sink Output ChannelsSink Current Capability with Maximum MC, DC, and BC Data:23.9 mA (VCC≤ 3.6 V, MC = 5)31.9 mA (VCC> 3.6 V, MC = 7)Grayscale (GS) Control:16-Bit (65,536 Steps) with Enhanced Spectrum or Conventional PWMMaximum Current (MC) Control:3 Bits (8 Steps) with a 3-mA to 30-mA Range3 MC Sets for Each Color GroupDot Correction (DC) Control:7 Bits (128 Steps) with a 26.2% to 100% RangeGlobal Brightness Control (BC):7 Bits (128 Steps) with a 10% to 100% Range3 BC Sets for Each Color GroupLED Power-Supply Voltage: Up to 10 VVCC: 3.0 V to 5.5 VConstant-Current Accuracy:Channel-to-Channel: ±2% (typ), ±5% (max)Device-to-Device: ±2% (typ), ±4% (max)Data Transfer Rate: 25 MHzGrayscale Control Clock: 33 MHzAuto Display RepeatDisplay Timing ResetAuto Data Refresh (GS and DC Only)LED Open Detection (LOD)LED Short Detection (LSD)UVLO Sets Default DataDelay Switching to Prevent Inrush CurrentOperating Temperature: –40°C to +85°C

Description

The TLC5955 is a 48-channel, constant-current sink driver. Each channel has an individually-adjustable, pulse width modulation (PWM), grayscale (GS) brightness control with 65,536 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 color group. The eight-step maximum current control (MC) selects the maximum output current range for all channels of each color group. GS, DC, BC, and MC data are accessible with a serial interface port. The TLC5955 has two error flags: LED open detection (LOD) and LED short detection (LSD). The error detection results can be read with a serial interface port. The TLC5955 is a 48-channel, constant-current sink driver. Each channel has an individually-adjustable, pulse width modulation (PWM), grayscale (GS) brightness control with 65,536 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 color group. The eight-step maximum current control (MC) selects the maximum output current range for all channels of each color group. GS, DC, BC, and MC data are accessible with a serial interface port. The TLC5955 has two error flags: LED open detection (LOD) and LED short detection (LSD). The error detection results can be read with a serial interface port.