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Dot/Bar Display Driver
1855
ic
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 (example) (bar graph mode)
- Accuracy
- ±0.5% (at +25°C, full scale voltage 10V)
- Temperature Range
- -55°C to +70°C
- Package
- PDIP (NFK) or PLCC
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 | IN | GPIO | Input signal |
| 6 | VRHI | ADC | Comparator reference high |
| 7 | REF OUT | POWER | Reference voltage output |
| 8 | REF ADJ | GPIO | Reference voltage adjustment |
| 9 | MODE | GPIO | Bar/dot mode selection |
| 10-18 | LED Outputs | POWER | Current regulated LED drivers |
Interactive pinout
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1855
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