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ULN2003APW
7-element NPN Darlington PairULN2003APW
7-element NPN Darlington Pair
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Manufacturer Part # : ULN2003APW
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Package/Case: TSSOP (PW)-16
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Part Status : Active
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Brand: Texas Instruments
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Product Categories : Power Distribution Switches, Load Drivers
Quality Assurance
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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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ULN2003APW DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $0.681 | $0.68 |
| 10 | $0.566 | $5.66 |
| 30 | $0.509 | $15.27 |
| 100 | $0.454 | $45.40 |
| 500 | $0.420 | $210.00 |
| 1000 | $0.402 | $402.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
In addition to its impressive current handling capabilities, the ULN2003APW also features clamp diodes for each channel, providing essential protection against back EMF generated by inductive loads. This safeguard helps to extend the lifespan of the array and prevent damage to connected components, ensuring greater longevity and durability in various operating conditions
Key Features
- High-voltage, high-current Darlington transistor array
- Seven Darlington pairs with common emitter outputs
- Output rated at 500mA per channel
Application
- Efficient relay driving
- Practical stepper motors
- Robotic load management
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Drivers per package | 7 | Switching voltage (max) (V) | 50 |
| Output voltage (max) (V) | 50 | Peak output current (A) | 0.5 |
| Delay time (typ) (ns) | 250 | Input compatibility | CMOS, TTL |
| Vol at lowest spec current (typ) (mV) | 900 | Iout/ch (max) (mA) | 500 |
| Iout_off (typ) (µA) | 50 | Rating | Catalog |
| Operating temperature range (°C) | -40 to 70 | FET | Internal |
| Imax (A) | 0.5 | Device type | Low-side switches |
| Function | Automotive load dump compatibility, Inductive load compatibility |
Specification Comparison
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is ULN2003APW?
The ULN2003APW is a high-voltage, high-current Darlington transistor array integrated circuit designed by Texas Instruments. It is commonly used for driving inductive loads such as relays, solenoids, and stepper motors in various electronic applications.
How Does ULN2003APW Work?
The ULN2003APW works by utilizing seven Darlington transistor pairs to amplify and switch current from low-level logic signals to higher-level outputs. Each pair consists of a high-voltage, high-current NPN transistor and a PNP transistor connected in a Darlington configuration. This design allows the ULN2003APW to handle significant loads with minimal input current.
How Many Pins does ULN2003APW have and What are the Functions of the Pinout Configuration?
The ULN2003APW is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- COM: Common ground pin for all outputs.
- IN1 - IN7: Logic input pins for driving each corresponding output.
- OUT1 - OUT7: Output pins connected to the load for each transistor pair.
- GND: Ground pin for the IC.
- VS: High-voltage supply pin for the outputs.
What are the Pros and Cons of ULN2003APW?
Pros:
- High Voltage and Current Capability: Capable of driving high-power loads, ideal for industrial applications.
- Darlington Pair Configuration: Provides high gain and current amplification for efficient switching.
- Integrated Protection Diodes: Includes built-in clamp diodes for inductive load protection.
- Simple Logic Interface: Easy to use with standard logic-level signals for control.
- Multiple Outputs: Features seven output channels for driving multiple loads simultaneously.
Cons:
- Power Dissipation: May require heat sinking for high-load applications to manage power dissipation.
- Complexity for Low-Power Applications: Overkill for low-current or low-voltage applications due to high voltage and current capabilities.
- Size Consideration: The 16-pin package may be larger than needed for some compact designs.
Are There Any Equivalents/Alternatives to ULN2003APW for Recommendation?
- The ULN2803A from STMicroelectronics is a similar high-voltage and high-current Darlington transistor array.
- Alternatives to the ULN2003APW include the MC1413 from ON Semiconductor and the SLA7024M from Allegro MicroSystems.
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