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SBVS114B – JULY 2008 – REVISED JANUARY 2015 TLC5947 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator
1 Features 2 Applications 1 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 …