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ULN2002ANE4
Product Overview
Category
The ULN2002ANE4 belongs to the category of high-voltage, high-current Darlington transistor arrays.
Use
It is commonly used as a driver for relays, lamps, solenoids, and other high-power peripheral devices in applications such as industrial control systems, stepper motor drivers, and automotive systems.
Characteristics
- High-voltage and high-current capability
- Integrated input resistors for simplified interfacing
- Compatible with various logic families
- Wide operating voltage range
- Thermal shutdown protection
Package
The ULN2002ANE4 is available in a 16-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.
Packaging/Quantity
It is typically supplied in tubes or reels containing multiple units, with quantities varying based on the supplier and customer requirements.
Specifications
- Maximum Output Current: 500 mA per channel
- Maximum Output Voltage: 50 V
- Input Voltage Range: 5V to 15V
- Operating Temperature Range: -20°C to 85°C
- Power Dissipation: 1.25 W
Detailed Pin Configuration
The ULN2002ANE4 features a 16-pin configuration with each pin serving specific functions related to input, output, and power supply. The detailed pinout is as follows: 1. Input 1 2. Ground 3. Output 1 4. Input 2 5. Output 2 6. Input 3 7. Output 3 8. Input 4 9. Output 4 10. Common 11. Input 5 12. Output 5 13. Input 6 14. Output 6 15. Input 7 16. Output 7
Functional Features
- Each channel of the ULN2002ANE4 consists of a Darlington pair which provides high gain and high current drive.
- Integrated input resistors simplify the connection to various logic families.
- The common emitter configuration enables easy interfacing with microcontrollers and other control devices.
Advantages and Disadvantages
Advantages
- High current and voltage handling capability
- Simplified interfacing with integrated input resistors
- Thermal shutdown protection enhances reliability
- Compact package size for space-constrained applications
Disadvantages
- Limited maximum output current per channel
- Higher power dissipation compared to some alternative solutions
Working Principles
The ULN2002ANE4 operates by amplifying the input signals and providing sufficient current drive to control high-power loads. When an input signal is applied, the corresponding output channel activates, allowing the connected load to be driven effectively.
Detailed Application Field Plans
The ULN2002ANE4 finds extensive use in various applications including: - Industrial Control Systems: Driving relays, solenoids, and lamps in manufacturing equipment and process control systems. - Stepper Motor Drivers: Providing the necessary current to control the phases of stepper motors in robotics and automation. - Automotive Systems: Actuating valves, switches, and other high-power components in automotive electronics.
Detailed and Complete Alternative Models
Some alternative models to the ULN2002ANE4 include: - ULN2003A: Similar Darlington transistor array with seven channels instead of the ULN2002ANE4's seven channels. - ULN2803A: Eight-channel Darlington transistor array with higher maximum output current capability.
In conclusion, the ULN2002ANE4 serves as a reliable and versatile solution for driving high-power loads in various electronic systems, offering a balance of performance, ease of use, and compact packaging.
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What is ULN2002ANE4?
- ULN2002ANE4 is a high-voltage, high-current Darlington transistor array commonly used for interfacing between low-level logic and high-power loads in applications such as relay drivers, stepper motor drivers, and LED displays.
What is the maximum voltage and current rating of ULN2002ANE4?
- The ULN2002ANE4 has a maximum voltage rating of 50V and a continuous output current rating of 500mA per channel.
How many channels does ULN2002ANE4 have?
- ULN2002ANE4 consists of seven channels, each containing a Darlington pair with integrated suppression diodes for inductive loads.
What are the typical applications of ULN2002ANE4?
- Typical applications include driving relays, lamps, solenoids, and other high-power peripherals from microcontrollers or other low-power digital signal processing devices.
What is the input logic compatibility of ULN2002ANE4?
- ULN2002ANE4 is compatible with TTL, DTL, PMOS, CMOS, and other low-power logic families.
Can ULN2002ANE4 be used for driving stepper motors?
- Yes, ULN2002ANE4 is commonly used for driving the windings of stepper motors due to its high-current capability and built-in flyback diodes.
What protection features does ULN2002ANE4 offer?
- ULN2002ANE4 includes integral transient-suppression diodes for inductive loads, providing protection against back EMF generated by inductive loads.
What is the thermal resistance of ULN2002ANE4?
- The thermal resistance of ULN2002ANE4 is typically around 100°C/W, which should be considered when designing for high power dissipation.
Can ULN2002ANE4 be cascaded for higher current or voltage requirements?
- Yes, multiple ULN2002ANE4 devices can be cascaded to achieve higher current or voltage handling capabilities.
What are the key considerations for using ULN2002ANE4 in a design?
- Key considerations include heat dissipation, input logic levels, load current and voltage requirements, and proper decoupling and bypassing to ensure reliable operation.