TLC59731DR

1FEATURES

• 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): 1 Mbps

• Internal GS Clock Oscillator: 6 MHz (typ)

• Display Repeat Rate: 3.1 kHz (typ)

• Output Delay Switching to Prevent Inrush Current

• Unlimited Device Cascading

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

APPLICATIONS

• RGB LED Cluster Lamp Display

DESCRIPTION

The TLC59731 is an easy-to-use, 3-channel, 50-mA sink current LED driver. The single-wire, 1-Mbps 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 (typ) 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.

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