TLC5928

具有 LED 开路检测的 16 通道恒流 LED 驱动器

The is a 16-channel, constant-current sink LED driver. Each channel can be turned on/off by writing serial data to an internal register. The constant-current value of all 16 channels is set by a single external resistor.

The TLC5928 has two error detection circuits: one for LED open detection LOD and one for a pre-thermal warning PTW. LOD detects a broken or disconnected LED and LEDs shorted to GND while the constant-current output is on. PTW indicates a high temperature condition.

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16 Channels, Constant-Current Sink Output with On/Off Control

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35-mA Capability Constant-Current Sink

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10-ns High-Speed Constant-Current Switching Transient Time

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Low On-Time Error

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LED Power-Supply Voltage up to 17 V

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VCC = 3.0 V to 5.5 V

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Constant-Current Accuracy:

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Channel-to-Channel = ±1%

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Device-to-Device = ±1%

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CMOS Logic Level I/O

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35-MHz Data Transfer Rate

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20-ns BLANK Pulse Width

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Readable Error Information:

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LED Open Detection LOD

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Pre-Thermal Warning PTW

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Operating Temperature: –40°C to +85°C

* APPLICAONS

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LED Video Displays

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Message Boards

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Illumination

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