LM3915 Datasheet, PDF (17/25 Pages) National Semiconductor (TI) – Dot/Bar Display Driver

Typical Applications (Continued)
Indicator and Alarm, Full-Scale Changes Display from Dot to Bar
*The input to the dot bar switch may be taken from cathodes of other LEDs.
Display will change to bar as soon as the LED so selected begins to light.
**Optional. Shunts 100 µA auxiliary sink current away from LED #1.
60 dB Dot Mode Display
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**Optional. Shunts 100 µA auxiliary sink current away from LED #11.
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