Description
Toshiba ULN2803 DIP is an Darlington Transistors Arrays Series are high−voltage, high−current Darlington drivers comprised of eight NPN Darlington pairs. Furthermore all units feature integral clamp diodes for switching inductive loads.
- An integrated circuit is a compact arrangement of transistors and other electronic components that perform specific functions. Also in the case of the ULN2803, it’s a single chip that contains multiple Darlington transistor arrays.
- 8 Darlington Transistor Arrays are designed to provide 8 separate Darlington transistor arrays. Each of these arrays contains two transistors connected in a particular way to amplify current.
Darlington Transistor:
A Darlington transistor configuration is a type of transistor amplifier circuit that provides high current gain.
Additionally this arrangement results in a high current amplification factor, particularly making it suitable for driving high power loads such as relays, motors, and particularly solenoids.
Features of Toshiba ULN2803 DIP:
- Output current (single output) 500 mA (max)
- High sustaining voltage output 50 V (min)
- Output clamp diodes
- Inputs compatible with various types of logic.
- Package Type−APG : DIP−18pin
Specifications
| Rating | Symbol | Value | Unit |
| Output sustaining voltage | VCE (SUS) | −0.5 to 50 | V |
| Output current | IOUT | 500 | mA / ch |
| Input voltage | VIN | −0.5 to 30 | V |
| Clamp diode reverse voltage | VR | 50 | V |
| Clamp diode forward current | IF | 500 | mA |
| Power dissipation | PD | 1.47 | W |
| Operating temperature | Topr | −40 to 85 | °C |
| Storage temperature | Tstg | −55 to 150 | °C |
Applications
Engineers commonly use the ULN2803 IC in applications where they must control multiple high-current devices using a microcontroller or another low-power control signal source
Typically, the ULN2803 is used in scenarios where you want to interface low-power digital or microcontroller outputs besides higher-power devices, consequently such as driving multiple relays or stepper motors in various industrial and electronic projects.
Also it simplifies the task of driving these loads by providing a convenient and compact solution with multiple transistor arrays in a single package.
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