TLC5947 - 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator

TLC5947是TI德州仪器公司的一款标牌/线性产品，TLC5947是24-Channel, 12-Bit PWM LED Driver with Internal Oscillator，本站介绍了TLC5947的封装应用图解、特点和优点、功能等，并给出了与TLC5947相关的TI元器件型号供参考。

TLC5947 - 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator - 标牌/线性 - LED驱动器 - 德州仪器

产品特性

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

2 Applications

Static LED Displays
Message Boards
Amusement Illumination
TV Backlighting

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TLC5947	HTSSOP (32)	11.00 mm × 6.20 mm
TLC5947	VQFN (32)	5.00 mm × 5.00 mm

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