TLC5947DAPR 24-Channel , 12-Bit PWM LED Driver with Internal Oscillator sound ic chip

TLC5947DAPR 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator sound ic chip

FEATURES

• 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% (typ)

– Device-to-Device = ±2% (typ)

•CMOS Logic Level I/O

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. 

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