LM3914 Dot/Bar Display LED Driver IC
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Prices updated: 12 Oct 2026
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About this product
LM3914 is an analog-controlled dot/bar LED driver that lights a string of 10 LEDs from a single analog input. It can be configured in bar mode, where all LEDs below a level turn on, or in dot mode, where only one LED is lit at a time. It is used for level indicators and multi-LED displays.
Specifications
- LED outputs
- 10
- Display modes
- Bar / Dot
- Input
- Single analog voltage
Frequently asked questions
How do I switch between bar and dot mode?
Mode is selected through the MODE pin on the IC. Check the datasheet pinout and connection for the exact wiring.
Does it need a microcontroller?
No. A single analog voltage input drives all ten outputs directly, so no microcontroller is required.
