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AS1109

Data Sheet

Contents

1 General Description

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2 Key Features

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3 Applications

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4 Pinout

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Pin Assignments

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Pin Descriptions

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5 Absolute Maximum Ratings

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6 Electrical Characteristics

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Switching Characteristics

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7 Typical Operating Characteristics

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8 Detailed Description

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Serial Interface

..................................................................................................................................................... 9

Timing Diagrams

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Error-Detection Mode

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Global Error Mode

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Error Detection Functions

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Open-LED Detection ..................................................................................................................................... 12

Shorted-LED ................................................................................................................................................. 12

Overtemperature ........................................................................................................................................... 12

Detailed Error Reports

....................................................................................................................................... 13

Detailed Temperature Warning Report ......................................................................................................... 13

Detailed Open-LED Error Report .................................................................................................................. 14

Detailed Shorted-LED Error Report .............................................................................................................. 15

Low-Current Diagnostic Mode....................................................................................................................... 15

Shutdown Mode

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9 Application Information

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Error Detection

................................................................................................................................................... 17

Error Detection On-The-Fly ........................................................................................................................... 17

Error Detection with Low-Current Diagnosis Mode ....................................................................................... 17

Cascading Devices

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Constant Current

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Adjusting Output Current

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Package Power Dissipation

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Delayed Outputs

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Switching-Noise Reduction

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Load Supply Voltage

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10 Package Drawings and Markings

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11 Ordering Information

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