STMicroelectronics

ULN2002A

ULN2002A Description

The ULN2002A is a high-performance integrated circuit (IC) designed for power relay and solenoid driver applications. Manufactured by STMicroelectronics, this IC belongs to the ULx200xA series and is housed in a through-hole package, specifically a 16-pin DIP (Dual In-line Package). The ULN2002A features an NPN output type with a low-side configuration, making it ideal for driving inductive loads such as relays and solenoids. It can handle a maximum output current of 500mA per channel, ensuring robust performance in demanding applications.

The ULN2002A operates with an inverting input type, providing a 1:1 input-to-output ratio. This feature simplifies the design process, as it allows for direct interfacing with microcontrollers and other digital logic circuits. The maximum load voltage is rated at 50V, offering a wide range of compatibility with various power supply systems. Additionally, the ULN2002A does not require a supply voltage (Vcc/Vdd), further enhancing its versatility and ease of use.

This IC is REACH unaffected and ROHS3 compliant, ensuring it meets the highest environmental and safety standards. The moisture sensitivity level (MSL) is rated at 1 (unlimited), making it suitable for a wide range of manufacturing environments without the need for special handling precautions.

ULN2002A Features

• Output Type: NPN
• Output Configuration: Low Side
• Current - Output (Max): 500mA
• Input Type: Inverting
• Ratio - Input:Output: 1:1
• Voltage - Load: 50V (Max)
• Number of Outputs: 7
• Mounting Type: Through Hole
• Package: Tube
• Interface: Parallel
• Product Status: Active
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Switch Type: Relay, Solenoid Driver
• Series: ULx200xA
• HTSUS: 8541.29.0095
• Base Product Number: ULN2002

ULN2002A Applications

The ULN2002A is particularly well-suited for applications requiring the control of multiple inductive loads. Its ability to drive up to seven outputs simultaneously makes it ideal for applications such as:

• Automotive Systems: Controlling relays and solenoids in automotive electronic control units.
• Industrial Automation: Driving solenoid valves and relays in industrial control panels.
• Home Appliances: Managing relays in washing machines, dryers, and other household appliances.
• Telecommunications: Controlling relays in telecommunication equipment and switching systems.

The ULN2002A's low-side configuration and high current handling capability provide a significant advantage over similar models, ensuring reliable and efficient operation in various environments. Its compliance with environmental and safety standards also makes it a preferred choice for designers aiming to meet regulatory requirements.

Conclusion of ULN2002A

The ULN2002A is a versatile and reliable IC designed for power relay and solenoid driver applications. Its robust technical specifications, including a maximum output current of 500mA and a maximum load voltage of 50V, make it suitable for a wide range of applications. The ULN2002A's compliance with environmental and safety standards, along with its ease of use and compatibility with various power supply systems, further enhance its appeal in the electronics industry. Whether used in automotive, industrial, or home appliance applications, the ULN2002A offers a high-performance solution for driving inductive loads with precision and reliability.