50-V, 8-ch darlington array
Product details
Parameters
Package | Pins | Size
Features
- 500-mA-Rated Collector Current (Single Output)
- High-Voltage Outputs: 50 V
- Output Clamp Diodes
- Inputs Compatible With Various Types of Logic
Description
The ULN2803A device is a 50 V, 500 mA Darlington transistor array. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 mA. The Darlington pairs may be connected in parallel for higher current capability.
Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2803A device has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | ULN2803A Darlington Transistor Arrays datasheet (Rev. H) | Feb. 14, 2017 |
| White papers | 11 Ways to Protect Your Power Path white paper | Jul. 03, 2019 | |
| Application notes | Basics of Power Switches (Rev. A) | Apr. 26, 2019 | |
| Technical articles | How can a load switch extend your device’s battery life? | Mar. 20, 2018 | |
| Technical articles | How and why you should use load switches for power sequencing | Feb. 06, 2018 | |
| Technical articles | How to use load switches and eFuses in your set-top box design | Nov. 23, 2017 | |
| Technical articles | Don’t leave it floating! Power off your outputs with quick output discharge | Dec. 09, 2016 | |
| Application notes | Stepper Motor Driving with Peripheral Drivers (Rev. A) | Dec. 02, 2016 | |
| Application notes | Improved Thermal Dissipation and Energy Efficiency for Peripheral Driving | Oct. 30, 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 3.3V, 5V to 30V Selectable split rail supplies for analog and MCU
- Supports up to 2.5A peak total current, 500mA per channel with up to 8 channels
- Direct interface per channel or serial shift-register adressable inputs
- Complete stepper motor driver stage in ultra small form factor (17.46mm x 22.23 mm)
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (DW) | 18 | View options |
Ordering & quality
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