UAA170 LED Driver for Light Spot Displays DIP-16
The UAA170 LED Driver IC is a specialized integrated circuit developed for controlling LED light spot or bar graph displays. Designed by Siemens, this device provides a simple and efficient solution for driving multiple LEDs with a linear response to an analog input signal, making it ideal for visual level indicators and display systems.
Features:
- Drives up to 16 LEDs in a wandering light spot (moving dot) display.
- Smooth or abrupt LED transition selectable via voltage difference between pins 12 and 13.
- Input voltage range at pins 11, 12, and 13 from 0V to 6V.
- Adjustable LED current (0 mA to 50 mA) using external resistors on pins 14, 15, and 16.
- Low control and reference input currents.
Specifications:
| Parameter | Value |
|---|---|
| Manufacturer | Siemens |
| Model Number | UAA170 |
| Component Description | LED Driver for Light Spot Displays |
| Package Type | DIP-16 (Plastic) |
| Number of LEDs Driven | Up to 16 |
| Supply Voltage (Typ.) | 12V DC |
| Maximum Supply Voltage | 18V DC |
| Current Consumption (I5) | 2mA to 10mA (typ. 5mA) |
| Control Input Current (pin 11) | –2µA (typ.) |
| Reference Input Current (pins 12, 13) | –2µA (typ.) |
| Voltage Difference ΔV12/13 | 1.4V to 6.0V |
| Smooth Transition ΔV12/13 | 1.4V |
| Abrupt Transition ΔV12/13 | 4.0V |
| LED Current Range | 0mA to 50mA |
| Operating Temperature | –25°C to +85°C |
| Storage Temperature | –40°C to +125°C |
Pin Configuration:
| Pin Number | Pin Name | Function / Description |
|---|---|---|
| 1 | GND | Ground (0V). |
| 2 | D1 | LED driver output 1 (light spot). |
| 3 | D2 | LED driver output 2. |
| 4 | D3 | LED driver output 3. |
| 5 | D4 | LED driver output 4. |
| 6 | D5 | LED driver output 5. |
| 7 | D6 | LED driver output 6. |
| 8 | D7 | LED driver output 7. |
| 9 | D8 | LED driver output 8. |
| 10 | D9 | LED driver output 9. |
| 11 | V<sub>Control</sub> | Signal input (control voltage 0–6 V for light-spot position). |
| 12 | V<sub>Rmin</sub> | Reference voltage low (bottom of scale). |
| 13 | V<sub>Rmax</sub> | Reference voltage high (top of scale). |
| 14 | V<sub>stab</sub> | Stabilized voltage / Reference current input (connect resistor to GND to set LED current). |
| 15 | V<sub>i</sub> | Internal voltage input. |
| 16 | V<sub>pwr</sub> | Supply voltage (max 18 V). |
Applications:
- LED bar graph displays.
- Audio level indicators (VU meters).
- Battery level indicators.
- Signal strength displays.
- Industrial control panels.
- Measurement and monitoring systems.
Package Include:
1x UAA170 LED Driver for Light Spot Displays DIP-16
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