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LD1074

16-Channel Constant Current LED Driver With 16-Bit PWM Control and Dot-Correction

Features

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16 constant-current output channels

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Constant output current range per channel: 2~60mA ( 2~60mA @ 5V, 2~45mA @ 3.3V )

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Excellent output current accuracy,

- Between channels: <±1.0% (typ.);

- Between ICs: <±1.5% (typ.)



Visual effect control

- Increased refresh rate

- selectable gray scale (16bit or 12bit)

- Individual pixel-correction (256 steps : 8-bit control)

- Brightness control (7-bit linear programmable output current gain)

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Error detection control

- Individual LED Open/Short-circuit detection

- External Resistor Detection (R-EXT pin Open Detection)

- Thermal protection ( Alarm & Shut-Down)

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EMI reduction

- Delay between output channels.

- Fast / Slow output switching Speed

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Maximum gray scale clock frequency: 33MHz

Application

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Full-color LED display



VMS (Variable Message Sign)

Description

LD1074 is a 16-channel constant current LED driver with selectable 16-/12-bit gray scale control and 8-bit pixel

correction. LD1074 provides constant current ranging from 2mA to 60mA for each output channel. The output

current can be set by an external resistor. LD1074 adopts open/short error detection, thermal detection, and external

resistor connection and adjusts current gain control for brightness.