Texas Instruments

ULN2003AIDG4

ULN2003AIDG4 Description

The ULN2003AIDG4 is a 7-channel Darlington transistor array designed for high voltage and high current applications. Manufactured by Texas Instruments, this device is part of the ULx200xA series and is housed in a surface-mount 16SOIC package. Despite being marked as obsolete, the ULN2003AIDG4 remains a reliable choice for driving relays, solenoids, and other inductive loads. It features a low-side output configuration with an inverting input type, providing a maximum output current of 500mA per channel and a maximum load voltage of 50V. The device does not require a supply voltage (Vcc/Vdd) and is REACH unaffected and ROHS3 compliant, ensuring environmental safety and regulatory compliance. With a moisture sensitivity level (MSL) of 1, the ULN2003AIDG4 is suitable for a wide range of manufacturing processes without the need for special handling.

ULN2003AIDG4 Features

• Output Type: Darlington, which provides high current gain and allows the device to drive heavy loads efficiently.
• Output Configuration: Low Side, enabling easy control and interfacing with various electronic circuits.
• Current - Output (Max): 500mA per channel, making it suitable for driving multiple high-current devices simultaneously.
• Voltage - Load: 50V (Max), ensuring compatibility with a wide range of voltage levels.
• Input Type: Inverting, which simplifies the control logic and reduces the need for additional components.
• Number of Outputs: 7, providing multiple channels for driving various loads.
• Mounting Type: Surface Mount, allowing for compact and efficient PCB design.
• Package: Tube, ensuring safe and reliable storage and handling.
• Interface: Parallel, enabling straightforward integration with microcontrollers and other digital systems.
• ECCN: EAR99, indicating compliance with export regulations.
• HTSUS: 8541.29.0095, facilitating accurate customs classification.

ULN2003AIDG4 Applications

The ULN2003AIDG4 is ideal for applications requiring high current and voltage handling capabilities. Its primary use cases include:

• Relay and Solenoid Driving: The device's high current and voltage capabilities make it perfect for driving relays, solenoids, and other inductive loads in industrial automation and control systems.
• Motor Control: Suitable for driving small motors in applications such as robotics, consumer electronics, and automotive systems.
• LED Driving: Can be used to drive high-power LEDs in lighting applications, providing efficient current control and brightness regulation.
• Stepper Motor Control: Ideal for driving stepper motors in CNC machines, 3D printers, and other precision motion control applications.
• General Purpose Switching: Can be used as a general-purpose switch in various electronic circuits where high current and voltage handling are required.

Conclusion of ULN2003AIDG4

The ULN2003AIDG4, despite being marked as obsolete, remains a robust and versatile solution for high current and voltage applications. Its Darlington output type, low-side configuration, and inverting input type provide significant advantages in terms of efficiency and ease of use. With a maximum output current of 500mA per channel and a maximum load voltage of 50V, the device is well-suited for driving relays, solenoids, and other inductive loads. The surface-mount package and parallel interface further enhance its integration capabilities in modern electronic designs. While newer alternatives may exist, the ULN2003AIDG4 continues to offer reliable performance and remains a valuable component in the electronics industry.