Texas Instruments

ULN2004ADRE4

ULN2004ADRE4 Description

The ULN2004ADRE4 is an integrated circuit designed for power relay applications, featuring a robust 7-output NPN transistor array. Manufactured by Texas Instruments, this IC is part of the ULx200xA series and is housed in a 16-SOIC package. Despite being marked as obsolete, the ULN2004ADRE4 continues to be a reliable choice for driving relays, solenoids, and other inductive loads. It operates with a maximum load voltage of 50V and can handle a maximum output current of 500mA per transistor. The device features an inverting input type and a low-side output configuration, making it suitable for applications requiring parallel interfacing.

ULN2004ADRE4 Features

• Output Type: NPN transistors provide a low-side configuration, ensuring efficient current sinking capabilities.
• Current Handling: Each of the 7 outputs can handle up to 500mA, making it suitable for driving multiple loads simultaneously.
• Voltage Range: The device can operate with a maximum load voltage of 50V, providing versatility in various power applications.
• Input to Output Ratio: A 1:1 ratio ensures direct control of each output, simplifying circuit design.
• Compliance: The ULN2004ADRE4 is REACH unaffected and ROHS3 compliant, meeting environmental and regulatory standards.
• Moisture Sensitivity: With an MSL rating of 1 (unlimited), the device is suitable for a wide range of environmental conditions.
• Mounting Type: Surface mount technology (SMT) allows for compact and reliable integration into modern PCB designs.
• Packaging: Available in tape and reel (TR) packaging, facilitating efficient handling and assembly processes.

ULN2004ADRE4 Applications

The ULN2004ADRE4 is ideal for applications requiring the control of multiple inductive loads such as relays and solenoids. Its low-side configuration and high current handling capabilities make it suitable for:

• Automotive Systems: Driving relays for lighting, wiper systems, and other electrical components.
• Industrial Automation: Controlling solenoids in valves and actuators.
• Consumer Electronics: Managing relays in appliances and power supplies.
• Telecommunications: Driving relays in switching and control circuits.

Conclusion of ULN2004ADRE4

The ULN2004ADRE4, despite being obsolete, remains a reliable and efficient solution for driving multiple inductive loads. Its robust design, high current handling capabilities, and compliance with environmental standards make it a preferred choice in various industries. With its 7 NPN outputs and low-side configuration, the ULN2004ADRE4 offers a versatile and straightforward solution for power relay applications.