TLC59731D集成电路（IC）的LED驱动器规格书PDF中文资料

TLC59731D属于集成电路（IC）的LED驱动器。由德州仪器制造生产的TLC59731DLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

1 Features

1• Three Sink Current Channels

• Current Capability:

– 50 mA per Channel

• Grayscale (GS) Control With PWM:

– 8-Bit (256 Steps) With Simple Gamma

Correction

• Single-Wire Interface (EasySet™)

• Power-Supply (VCC) Voltage Range:

– No Internal Shunt Regulator Mode:

3 V to 5.5 V

– Internal Shunt Regulator Mode: 3 V to 6 V

• OUT Terminals Maximum Voltage: Up to 21 V

• Integrated Shunt Regulator

• Data Transfer Maximum Rate:

– Bits per Second (bps): 600 kbps

• Internal GS Clock Oscillator: 6 MHz (Typical)

• Display Repeat Rate: 3.1 kHz (Typical)

• Output Delay Switching to Prevent Inrush Current

• Unlimited Device Cascading

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

2 Applications

RGB LED Cluster Lamp Displays

3 Description

The TLC59731 device is an easy-to-use, 3-channel,

50-mA sink current LED driver. The single-wire, 600-

kbps serial interface (EasySet) provides a solution for

minimizing wiring cost. The LED driver provides 8-bit

pulse width modulation (PWM) resolution and a

simple gamma correction feature. The display repeat

rate is achieved at 3.1 kHz (typical) with an integrated

6-MHz grayscale (GS) clock oscillator. The driver also

provides unlimited cascading capability.

Output sink current can be set by each external

resistor connected to the OUTn terminal in series.

The TLC59731 has an internal shunt regulator that

can be used for higher VCC power-supply voltage

applications.