ULN2004

The ULN2004 is a high-voltage, high-current Darlington transistor array integrated circuit (IC). Manufactured by various semiconductor companies, including Texas Instruments and STMicroelectronics, this IC consists of seven Darlington pairs that can be used to control a variety of inductive and resistive loads. Each Darlington pair can handle up to 500mA of continuous current and withstands peak currents of up to 600mA. The ULN2004 is commonly used in applications where driving relays, stepper motors, LEDs, and other high-current devices is required.

Key Features:

• Darlington Transistor Array: Seven Darlington pairs in a single IC package
• High-Voltage Outputs: Suitable for voltages up to 50V
• High Current Capability: Each Darlington pair can handle up to 500mA (continuous) and 600mA (peak)
• Clamp Diodes: Integrated clamp diodes for inductive load protection
• Common Cathode Connections: Simplifies wiring for multiple outputs
• TTL/CMOS Compatible Inputs: Compatible with various logic levels
• Available Packages: DIP-16, SOIC-16, and other package types

Technical Specifications:

• Output Voltage: Up to 50V
• Continuous Collector Current (per channel): 500mA
• Peak Collector Current (per channel): 600mA
• Input Voltage (logic level): 3.3V to 15V
• Maximum Power Dissipation: 2.5W
• Operating Temperature Range: -20°C to +85°C
• Package Types: DIP-16, SOIC-16, PDIP-16

Applications:

• Relay Drivers: Used for driving relay coils in control circuits.
• Stepper Motor Drivers: Controls stepper motors in robotic and automation applications.
• Lamp Drivers: Drives incandescent lamps and LED arrays.
• Display Drivers: Controls seven-segment displays and other types of displays.
• Printer and Other Peripheral Drivers: Used in printers and other office automation equipment.
• Industrial Control: Used in various industrial automation and control systems.

Datasheet:
For detailed technical information, refer to the ULN2004 Datasheet.