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ULN2003AFW
Description of ULN2003AFW, a Darlington transistor IC
ULN2003AFW
Description of ULN2003AFW, a Darlington transistor IC
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ULN2003AFW DataSheet
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Details
7CH DARLINGTON SINK DRIVERThe ULN2003AP / AFW Series are high−voltage, high−current darlington drivers comprised of seven NPN darlington pairs.All units feature integral clamp diodes for switching inductive loads.Applications include relay, hammer, lamp and display (LED) drivers.FEATURES● Output current (single output) 500 mA MAX.● High sustaining voltage output 50 V MIN. (ULN2003AP / AFW Series)● Output clamp diodes● Inputs compatible with various types of logic● Package Type−AP : DIP−16pin● Package Type−AFW : SOL−16pin
Key Features
- 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−AP : DIP−16pin
- Package Type−AFW : SOL−16pin
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Manufacturer | TOS | Product Category ! | Transistors (BJT) - Arrays |
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 ULN2003AFW?
The ULN2003AFW is a high voltage, high current Darlington transistor array designed by STMicroelectronics. It is commonly used as a driver for inductive loads such as relays, stepper motors, and solenoids in various electronic applications.
How Does ULN2003AFW Work?
The ULN2003AFW works by providing a convenient way to interface low-level logic to inductive loads. It consists of seven NPN Darlington pairs with integrated suppression diodes for each output, allowing the direct control of inductive loads. The array is designed to handle higher voltages and currents, making it suitable for driving a wide range of inductive loads.
How Many Pins does ULN2003AFW have and What are the Functions of the Pinout Configuration?
The ULN2003AFW is housed in a 16-pin SOP (Small Outline Package) package. The pinout configuration includes:
- COM: Common emitter pin for the driver outputs.
- IN1 to IN7: Input pins for each driver channel.
- OUT1 to OUT7: Output pins for each driver channel.
- GND: Ground connection.
- VCC: Positive power supply pin.
What are the Pros and Cons of ULN2003AFW?
Pros:
- High Voltage and Current Capability: Suitable for driving a wide range of inductive loads.
- Integrated Suppression Diodes: Provides protection for inductive loads, simplifying external circuitry.
- Wide Operating Voltage Range: Can handle higher voltages, making it versatile for different applications.
- Multiple Driver Channels: Allows for control of multiple inductive loads in a compact package.
- Cost-Effective: Offers a cost-effective solution for driving inductive loads compared to discrete component designs.
Cons:
- Power Dissipation: May generate heat at higher currents and voltages, requiring thermal management.
- Driver Saturation Voltage: The voltage drop across the drivers may affect performance in some applications.
- Compatibility: Input signal levels need to be compatible with the driver's logic levels.
Are There Any Equivalents/Alternatives to ULN2003AFW for Recommendation?
- The ULN2803A from STMicroelectronics is a similar high voltage, high current Darlington array with eight channels.
- Alternatives to the ULN2003AFW include the MC1413 from ON Semiconductor and the A6818 from Allegro Microsystems.
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