ULN2803A

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STMicroelectronics ULN2803A

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Part No.:
ULN2803A
Manufacturer:
STMicroelectronics
Package:
18-DIP (0.300, 7.62mm)
Datasheet:
ULN2803A.pdf
Description:
TRANS 8NPN DARL 50V 0.5A 18DIP
In Stock:
2363
Quantity:
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  • Purchase and inquiryPurchase and inquiry

    ULN2803A this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including ULN2803A price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for ULN2803A to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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    ULN2803A informationULN2803A information

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    ULN2803A Typical application Circuitry

    ULN2803A

    The ULN2803A is an integrated circuit (IC) that contains a high-voltage, high-current Darlington transistor array. It is designed for interfacing relatively low-level logic signals to high-voltage and high-current loads. The ULN2803A and its variations are widely used in various applications, particularly where there's a need to drive inductive loads like relays, solenoids, and stepper motors.

    Here are the primary features and attributes of the ULN2803A:

    1. Darlington Pairs: The ULN2803A consists of eight NPN Darlington pairs. This configuration results in a high current gain, allowing the device to drive larger loads than the input signals would be capable of directly.

    2. Output Capability: The IC is designed to handle output voltages of upto 50V and can source currents of approximately 500mA per channel.

    3. Input Compatibility: The inputs are compatible with various logic levels, making the ULN2803A adaptable for interfacing with TTL, CMOS, and PMOS logic families.

    4. Built-in ClampDiodes: One of the defining features of the ULN2803A is its internal clampdiodes for each channel. These diodes offer protection against voltage spikes typically caused by inductive loads, giving a safe path for flyback currents.

    5. Common Cathode: The clampdiodes have a common cathode pin. This can be connected to the voltage supply of the inductive loads, which provides an easy way to handle voltage spikes.

    6. Packaging: The ULN2803A is typically available in a DIp(Dual In-line Package) or other formats, suitable for both prototyping and final product integration.

    7. Applications: This IC is incredibly versatile. It's primarily used in applications requiring the driving of high-current and/or high-voltage loads by low-voltage microprocessors or other digital control systems. Examples include relays, solenoids, stepper motors, LED displays, print hammers, and more.

    8. Simplified Circuit Design: The ULN2803A allows for streamlined design by reducing the need for additional components. Its built-in diodes and Darlington pairs simplify the process of interfacing low-level logic to high-power loads.

    To get a comprehensive understanding of the ULN2803A, including its electrical specifications, pin configurations, and suggested application circuits, it's always recommended to consult the datasheet provided by the manufacturer. This will provide precise details and ensure safe and effective usage in specific applications.

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    We have a professional and experienced quality control team to strictly verify and test the ULN2803A. All suppliers must pass our qualification reviews before they can publish their products including ULN2803A on icwhale.com; we pay more attention to the channels and quality of ULN2803A products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

    3. Are the ULN2803A price and inventory displayed accurate?

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    6. What is the process for return or replacement of ULN2803A?

    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ULN2803A we delivered, we will accept the replacement or return of the ULN2803A only when all of the below conditions are fulfilled:

    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

    (2)We are informed of the defect described above within 90 days after the delivery of ULN2803A.

    (3)The PartNo is unused and only in the original unpacked packaging.

    Two processes to return the products:

    (1)Inform us within 90 days

    (2)Obtain Requesting Return Authorizations

    7.How to contact us to get technical supports, such as ULN2803A pin diagram, ULN2803A datasheet?

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