LM3914 Linear Dot/Bar LED Driver IC, 3V to 15V
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Prices updated: 13 Oct 2026
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About this product
LM3914 is an analog dot/bar LED driver with a linear output scale, designed to drive ten LEDs from one analog signal. It can be configured as a bar graph or a single moving dot, and works as a simple analog meter circuit with one resistor. It operates from a single 3V to 15V supply.
Specifications
- LED outputs
- 10
- Output scale
- Linear
- Supply voltage
- 3V to 15V
- Display modes
- Bar / Dot
- Example full-scale reading
- 1.2V full scale with 1 resistor
Frequently asked questions
How do I build a 1.2V full-scale analog meter with it?
The listing states that a 1.2V full-scale meter needs one resistor, a single 3V to 15V supply and the 10 display LEDs. If that resistor is a potentiometer, it also works as the LED brightness control.
Can I drive it from a microcontroller?
Yes. Feed the input with an analog voltage in its input range, such as an ADC output, or a PWM signal passed through a low-pass filter.
