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.
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | ULN2803A Darlington Transistor Arrays datasheet (Rev. H) | 14 Feb 2017 |
| E-book | 11 Ways to Protect Your Power Path white paper | 03 Jul 2019 | |
| Application note | Basics of Power Switches (Rev. A) | 26 Apr 2019 | |
| Application note | Stepper Motor Driving with Peripheral Drivers (Rev. A) | 02 Dec 2016 | |
| Application note | Improved Thermal Dissipation and Energy Efficiency for Peripheral Driving | 30 Oct 2014 |
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The BOOSTXL-ULN2003 is 2A stepper motor driver kit which features TI's ULN2003A bipolar transistor array and the CSD1751Q2 NexFET™. This BoosterPack™ contains everything needed to drive up to 2 stepper motors or 8 channels, with up to 30V and supports both serial and parallel (...)
| Package | Pins | Download |
|---|---|---|
| SOIC (DW) | 18 | View options |
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