TLC5947 Series

24-channel, 12-bit PWM LED driver with internal Oscillator

Catalog

24-channel, 12-bit PWM LED driver with internal Oscillator

Part	Package / Case	Package / Case [x]	Package / Case [y]	Voltage - Supply (Min) [Min]	Mounting Type	Current - Output / Channel	Number of Outputs	Voltage - Output	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Supply (Max)	Frequency	Type	Topology	Applications
Texas Instruments TLC5947DAPG4	32-PowerTSSOP	0.24 in	6.1 mm	3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-HTSSOP	5.5 V	4 MHz	Linear	Shift Register	Backlight
Texas Instruments TLC5947DAPR	32-PowerTSSOP	0.24 in	6.1 mm	3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-HTSSOP	5.5 V	4 MHz	Linear	Shift Register	Backlight
Texas Instruments TLC5947RHBR	32-VFQFN Exposed Pad			3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-VQFN (5x5)	5.5 V	4 MHz	Linear	Shift Register	Backlight
Texas Instruments TLC5947DAPRG4	32-PowerTSSOP	0.24 in	6.1 mm	3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-HTSSOP	5.5 V	4 MHz	Linear	Shift Register	Backlight
Texas Instruments TLC5947DAP	32-PowerTSSOP	0.24 in	6.1 mm	3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-HTSSOP	5.5 V	4 MHz	Linear	Shift Register	Backlight
Texas Instruments TLC5947RHBT	32-VFQFN Exposed Pad			3 V	Surface Mount	30 mA	24	30 VDC	85 °C	-40 °C	32-VQFN (5x5)	5.5 V	4 MHz	Linear	Shift Register	Backlight

Catalog

24-channel, 12-bit PWM LED driver with internal Oscillator

Key Features

• 24 Channels, Constant-Current Sink Output30-mA Capability (Constant-Current Sink)12-Bit (4096 Steps) PWM Grayscale ControlLED Power-Supply Voltage Up to 30 VVCC= 3.0 V to 5.5 VConstant-Current Accuracy:Channel-to-Channel = ±2% (Typical)Device-to-Device = ±2% (Typical)CMOS Logic Level I/O30-MHz Data Transfer Rate (Standalone)15-MHz Data Transfer Rate (Cascaded Devices,SCLK Duty = 50%)Shift Out Data Changes With Falling Edge toAvoid Data Shift ErrorsAuto Display Repeat4-MHz Internal OscillatorThermal Shutdown (TSD):Automatic Shutdown at OverTemperature ConditionsRestart Under Normal TemperatureNoise Reduction:4-Channel Grouped Delay to Prevent Inrush CurrentOperating Temperature: –40°C to 85°C24 Channels, Constant-Current Sink Output30-mA Capability (Constant-Current Sink)12-Bit (4096 Steps) PWM Grayscale ControlLED Power-Supply Voltage Up to 30 VVCC= 3.0 V to 5.5 VConstant-Current Accuracy:Channel-to-Channel = ±2% (Typical)Device-to-Device = ±2% (Typical)CMOS Logic Level I/O30-MHz Data Transfer Rate (Standalone)15-MHz Data Transfer Rate (Cascaded Devices,SCLK Duty = 50%)Shift Out Data Changes With Falling Edge toAvoid Data Shift ErrorsAuto Display Repeat4-MHz Internal OscillatorThermal Shutdown (TSD):Automatic Shutdown at OverTemperature ConditionsRestart Under Normal TemperatureNoise Reduction:4-Channel Grouped Delay to Prevent Inrush CurrentOperating Temperature: –40°C to 85°C

Description

The TLC5947 is a 24-channel, constant-current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor. The TLC5947 has a thermal shutdown (TSD) function that turns off all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions. The TLC5947 is a 24-channel, constant-current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor. The TLC5947 has a thermal shutdown (TSD) function that turns off all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions.