ULN2003A
Manufacturer: Texas Instruments
Part Number: ULN2003A
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| Attribute | Value |
| cate_name | Bipolar Transistors (BJT) |
| Datasheet | ULN2003A Texas Instruments |
| rohs | Non compliant |
| reference_package | |
| mounting | |
| application_level | Industrial |
| lifecycle | |
| spm | |
| operating_temperature | -40℃~85℃ |
| length_width_height | |
| collector_current | 500mA |
| collector_emitter_voltage_max | 50V |
| configure | - |
| max_collector_base_voltage | 50V |
| max_collector_cut_off_current | - |
| max_collector_emitter_saturation_voltage | 1.7 |
| max_emitter_base_voltage | - |
| max_power_dissipation | - |
| transistor_type | NPN |
| vce_max_saturation_value_at_different_ib_ic | - |
Overview:
The ULN2003A is a high-voltage, high-current darlington transistor array developed by Texas Instruments. This device is specifically designed to drive high inductive loads such as relays, solenoids, and DC motors. With its ability to handle up to 50V and 500mA per channel, the ULN2003A is a versatile component in various electronic projects.
Features:
1. Darlington Configuration: Each of the ULN2003A's eight darlington pairs can amplify the input signal, making it suitable for low-voltage control of high-voltage devices.
2. High Voltage and Current Ratings: Capable of handling up to 50V and 500mA per channel, it is designed for demanding applications.
3. Wide Operating Voltage Range: The ULN2003A operates over a wide voltage range, making it compatible with various power sources.
4. High Current Gain: The darlington configuration provides a high current gain, ensuring robust performance even with small input signals.
5. Inhibit Input: An integrated inhibit input allows for easy control of the entire array with a single signal.
Development Support:
Texas Instruments provides comprehensive support for developers using the ULN2003A, including:
- Technical Documentation: Detailed datasheets, application notes, and design guides.
- Design Tools: Software tools to assist in circuit design and simulation.
- Community Support: Access to forums and communities where developers can share knowledge and solutions.
Application Areas:
The ULN2003A finds use in a variety of applications, such as:
- Industrial Control Systems: For driving relays and solenoids in automation and control systems.
- Automotive Applications: In motor control for power windows, seats, and other actuators.
- Home Automation: For controlling motors in smart home devices like blinds and fans.
- Robotics: In robotic arms and other mechanical systems requiring precise motor control.
Parameter Introduction:
- Input Voltage Range: 3.3V to 32V
- Output Voltage Range: -0.3V to VCC
- Current per Channel: Max 500mA
- Output Type: Open-collector
- Operating Temperature Range: -40°C to +125°C
- Package Type: 18-pin DIP or SOIC
Frequently Asked Questions (FAQs):
1. Q: Can the ULN2003A be used to drive stepper motors?
A: Yes, it can be used to drive stepper motors, but ensure the motor's voltage and current requirements are within the ULN2003A's specifications.
2. Q: How do I protect the ULN2003A from inductive kickback?
A: Use a flyback diode across the inductive load to protect against voltage spikes caused by inductive kickback.
3. Q: What is the purpose of the inhibit input?
A: The inhibit input allows you to disable all outputs simultaneously, which can be useful for power-saving modes or emergency stop functions.
4. Q: Can I parallel multiple ULN2003A arrays to increase current capacity?
A: Yes, you can parallel the arrays, but ensure that the input signals are synchronized to avoid phase discrepancies.
5. Q: How do I determine if I need a darlington configuration?
A: If your application requires a high current gain from a low input signal to control high-voltage or high-current devices, a darlington configuration like the ULN2003A is suitable.
The ULN2003A is a robust and reliable component for driving high inductive loads, making it an excellent choice for a wide range of electronic projects where high voltage and current control are necessary.
Please refer to the product rule book for details.
TI is best known for its innovative contributions to the electronics industry. It pioneered the development of the integrated circuit in 1958, a technological breakthrough that revolutionized the world of electronics and paved the way for modern computing systems. This innovation has been foundational in the advancement of computers, telecommunications, and many other electronic devices.
The company operates through two main segments: Analog and Embedded Processing. The Analog segment focuses on products like power management chips, audio and operational amplifiers, data converters, and interface products. These components are crucial for managing power, amplifying sound, converting signals, and facilitating communication between devices. TI's analog ICs are used in a wide variety of applications, including industrial, automotive, personal electronics, communication equipment, and enterprise systems.
The Embedded Processing segment involves microcontrollers, digital signal processors (DSPs), and applications processors. These products are used in automotive, industrial, and consumer electronics applications. They are essential for processing complex digital data, controlling electronic systems, and supporting the infrastructure of smart devices and the Internet of Things (IoT).
Texas Instruments also places a strong emphasis on education through its educational technology products, including graphing calculators and classroom software. TI’s calculators have been a staple in mathematics and science classrooms around the world, helping to educate generations of students and making complex mathematical concepts more accessible.
TI is committed to innovation and quality, investing heavily in research and development. The company holds thousands of patents and is continually pushing the boundaries of what is possible in electronics technology. TI’s innovations not only enhance the performance and efficiency of electronic products but also contribute to environmental sustainability through advancements in power-saving technologies.
Moreover, Texas Instruments maintains a strong ethical stance with a commitment to corporate responsibility. It strives to uphold high standards in environmental responsibility, community engagement, and governance practices. TI's corporate culture is characterized by a focus on integrity, respect, and the aspiration to achieve the highest level of customer satisfaction.
In summary, Texas Instruments stands as a leader in the semiconductor industry, driven by a history of innovation, a broad portfolio of technologies, and a commitment to positively impacting the world through its products and practices. Whether through advancing technology or empowering education, TI continues to shape a future where electronics enhance the lives of people everywhere.
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