TLC5947 Datasheet PDF - TI

●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.

● 24 Channels, Constant-Current Sink Output

● 30-mA Capability (Constant-Current Sink)

● 12-Bit (4096 Steps) PWM Grayscale Control

● LED Power-Supply Voltage Up to 30 V

● VCC = 3.0 V to 5.5 V

● Constant-Current Accuracy:

● Channel-to-Channel = ±2% (Typical)

● Device-to-Device = ±2% (Typical)

● CMOS Logic Level I/O

● 30-MHz Data Transfer Rate (Standalone)

● 15-MHz Data Transfer Rate (Cascaded Devices,

●SCLK Duty = 50%)

● Shift Out Data Changes With Falling Edge to

●Avoid Data Shift Errors

● Auto Display Repeat

● 4-MHz Internal Oscillator

● Thermal Shutdown (TSD):

● Automatic Shutdown at OverTemperature Conditions

● Restart Under Normal Temperature

● Noise Reduction:

● 4-Channel Grouped Delay to Prevent Inrush Current

● Operating Temperature: –40°C to 85°C