ULN2803A
ULN2803A is Darlington Transistor Array manufactured by Texas Instruments.
Features
- 1 500-m A-Rated Collector Current (Single Output)
- High-Voltage Outputs: 50 V
- Output Clamp Diodes
- Inputs patible With Various Types of Logic
2 Applications
- Relay Drivers
- Hammer Drivers
- Lamp Drivers
- Display Drivers (LED and Gas Discharge)
- Line Drivers
- Logic Buffers
- Stepper Motors
- IP Camera
- HVAC Valve and LED Dot Matrix
3 Description
The ULN2803A device is a 50 V, 500 m A Darlington transistor array. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with mon-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 m A. 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ULN2803ADW
SOIC (18)
11.55 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
1 1B
Logic Diagram
18 1C
2 2B
17 2C
3 3B
16 3C
4 4B
15 4C
5 5B
14 5C
6 6B
13 6C
7...
