ULN2003D1

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Transistor Type:	7 NPN Darlington
Current - Collector (Ic) (Max):	500mA
Voltage - Collector Emitter Breakdown (Max):	50V
Vce Saturation (Max) @ Ib, Ic:	1.6V @ 500µA, 350mA
Current - Collector Cutoff (Max):	50µA
DC Current Gain (hFE) (Min) @ Ic, Vce:	--
Power - Max:	--
Frequency - Transition:	--
Operating Temperature:	-20°C ~ 85°C (TA)
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SO
Base Part Number:	ULN2003

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

ULN2003D1 Application Field and Working Principle

ULN2003D1 is an integrated circuit commonly used in a wide variety of applications, including interface circuits, logic interfacing, stepper motors and DC motors, medical equipment, and industrial robots. It is part of the technology family of Bipolar (BJT) Arrays, which is designed to resolve interfacing problems between different circuits and to reduce the need for additional components. In this article, we will discuss ULN2003D1’s applications and working principle.

Applications

ULN2003D1 is an integrated circuit that is built up of several Darlington transistors. Its integrated design allows for the combining of logical and interface problems into one solution, reducing the need for additional components.One of the primary applications of ULN2003D1 is the interface between a host computer and external device, such as sensors, motors, and other peripherals. The integrated nature of the ULN2003D1 allows it to receive digital signals from the host computer an then convert those into analog signals to drive external devices. This eliminates the need for extra components and ensures that the signals are transmitted accurately and reliably.ULN2003D1 is also often used for controlling stepper motors, DC motors, and other mechanisms that require precise control. The integration of the logic and interface circuits allows for quick and accurate responses, making ULN2003D1 a reliable choice for these applications.ULN2003D1 is also commonly found in medical equipment. Here, it can be used to control the various functions of the machine, including pumps, valves, and timers. ULN2003D1’s integration ensures that all the necessary commands are sent to the device accurately and quickly, while its low power draw keeps the electricity costs low.Lastly, ULN2003D1 is commonly used in industrial robots. Its integration makes it an ideal choice for this application, as it provides reliable, responsive control over the robot’s movements and operations.

Working Principle

The ULN2003D1 is based on the Darlington transistor array principle, which is a combination of several Darlington transistors and resistors. The Darlington transistor array works like a bridge, connecting the two ends of a circuit and providing the necessary current to activate various components. The ULN2003D1 combines several of these transistor arrays into a single, integrated circuit, allowing for more complex functions with fewer components and less space. To control the Darlington transistors, the circuit uses electrical pulses, which can be provided from the host computer or from an external source. These pulses are encoded with the data, which the ULN2003D1 then decodes into the necessary control signals for the external components. The ULN2003D1 will also detect any errors or interruptions in the signal and indicate them to the host computer, allowing for quick and accurate responses. This is an important feature when working with motors, valves, or other components that require up-to-date data.

Conclusion

ULN2003D1 is an example of the technology family of Bipolar (BJT) Arrays, which is designed to provide a compact, integrated solution to interfacing problems. Its applications range from the interface between host computers and external devices, to controlling motors and mechanisms, to equipment found in the medical industry and in industrial robots. Its working principle is based on the Darlington transistor array principle. With its integration, accuracy, and reliability, ULN2003D1 is an ideal choice for a wide variety of applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description