TLC59581
- 48 Constant-Current Sink Output Channels
- Sink Current Capability with Max BC/CC data:
- 25 mA at 5 VCC
- 20 mA at 3.3 VCC
- Global Brightness Control (BC): 3-Bit (8-Step)
- Color Brightness Control (CC) for Each Color
Group: 9-Bit (512-Step), Three Groups - LED Power Supply Voltage Up To 10 V
- VCC = 3.0 V to 5.5 V
- Constant Current Accuracy
- Channel-to-Channel = ±1%(Typ), ±3%(Max)
- Device-to-Device = ±1%(Typ), ±2%(Max)
- Data Transfer Rate: 25 MHz
- Gray Scale Clock: 33 MHz
- Pre-Charge FET to Avoid Ghosting Phenomenon
- Enhanced Circuit for Caterpillar Cancelling
- Low-Grayscale Enhancement
- LED Open Detection (LOD)
- Thermal Shut Down (TSD)
- Operating Temperature: –40°C to 85°C
The TLC59581/82are 48-channel constant-current sink drivers. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control.
The TLC59581 can support 32-multiplexing while TLC59582 can support 16-multiplexing.
The output channels are divided into three groups. Each group has a 512-step color brightness control (CC). CC adjusts brightness control between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible through a serial interface port.
See application note Build High Density, High Refresh Rate, Multiplexing LED Panel with TLC59581, SLVA744.
The TLC59581/82 device has one error flag: the LED open detection (LOD), which can be read through a serial interface port. To resolve this caterpillar issue caused by an open LED, the TLC59581/82 device has an enhanced circuit for caterpillar canceling, thermal shut down (TSD) and IREF resistor short protection (ISP), which ensures a higher system reliability. The TLC59581/82 device also has a power-save mode that sets the total current consumption to 0.8 mA (typical) when all outputs are off. The TLC59581/82 device is a good solution to improve display performance of a multiplexing panel for low-grayscale patterns.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TLC59581/82 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LOD Caterpillar Cancelling and Display Data Memory datasheet (Rev. A) | PDF | HTML | 2015/11/10 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
| Application note | Build High-Density, High Refresh Rate, Multiplexing Panel with the TLC59581 | 2016/01/06 |
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