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Dot/ Bar Display Driver
LM3914
ic amplifier
LM3914 is a dot/bar display driver that can drive LEDs or LCDs, with programmable LED currents and an internal voltage reference.
In stock
Specifications
8- Operating Voltage
- 3V to 20V
- Supply Current
- 1.6mA (standby) (max 2.5mA)
- Interface
- Analog
- Resolution
- 10 steps
- Range
- 0V to 5V (bar graph) (or other voltage range as configured)
- Accuracy
- ±0.5%
- Temperature Range
- -55°C to +70°C
- Package
- 18-lead PDIP (NFK)
Pinout
10Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VLED | POWER | LED current control |
| 2 | GND | GND | |
| 3 | V+ | POWER | Supply voltage |
| 4 | VRLO | ADC | Comparator reference low |
| 5 | Pin 5 (Mode Select) | GPIO | Controls bar or dot mode, chaining of multiple drivers |
| 6 | VRHI | ADC | Comparator reference high |
| 7 | REF OUT | POWER | Internal voltage reference output |
| 8 | REF ADJ | GPIO | Adjustable internal voltage reference |
| 9 | Mode Select (Bar/Dot) | GPIO | Controls bar or dot mode, chaining of multiple drivers |
| 10-18 | LED Outputs 1-10 | POWER | Current regulated LED outputs |
Interactive pinout
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LM3914
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