ULN2803ADWR

Description

Here's a concise introduction to the ULN2803ADWR: The ULN2803ADWR is an integrated circuit featuring eight Darlington transistors, designed by Texas Instruments. It offers high-voltage and current capabilities, making it suitable for various applications. With features like input diode protection, common-cathode clamp diodes, and thermal shutdown protection, this IC ensures reliable operation in harsh environments. The ULN2803ADWR is characterized by its 60V output voltage and 5A output current, making it an excellent choice for applications needing high-voltage signaling. Its CMOS, PMOS, or TTL-compatible inputs allow for seamless integration with other components. With a wide range of applications spanning from metering devices to safety equipment, this IC is an essential component in various industries.

Features

The ULN2803ADWR has the following features:

• Eight Darlington transistors
• High-voltage and high-current capability
• Input diode protection
• Common-cathode clamp diodes
• Output voltage up to 50V
• Output current up to 500mA
• CMOS, PMOS, or TTL compatible inputs
• Thermal shutdown protection

Package

The package type of ULN2803ADWR is SOIC-18 (Small Outline Integrated Circuit - 18 pins).

Pinout

The ULN2803ADWR has a pin count of 18 (SOIC-18 package). It's an 8-channel Darlington transistor array with individual diodes for input protection, common-cathode clamp diodes, and thermal shutdown protection.

Here's the breakdown:

• Pins 1-8: Collector outputs
• Pin 9: Common cathode
• Pins 10-17: Input diodes (one per channel)
• Pin 18: Ground

Each channel can handle up to 500mA of output current and has a maximum voltage rating of 50V. The device is designed for applications requiring high-voltage and high-current switching, such as motor control, relay drivers, and power supplies.

Manufacturer

The manufacturer of the ULN2803ADWR is Texas Instruments (TI). Texas Instruments is a leading semiconductor company that designs, manufactures, and tests semiconductors and related technologies. They are known for their wide range of products, including analog and digital integrated circuits, embedded processors, and memory devices.

Applications

According to the product information, the ULN2803ADWR has various application areas, including:

• Metering devices
• Audio equipment
• Temperature sensors
• Sensor networks
• Door access control
• Motorized valves
• Communication devices
• Medical equipment
• Barcode scanners
• Home automation
• Security systems
• Display panels
• Instrumentation systems
• Remote monitoring
• Safety equipment
• Motion control systems
• Power supply units
• Signal amplification

Equivalent

The equivalent products of ULN2803ADWR are:

• NPN Darlington Transistor Array ICs:
• + Texas Instruments ULN2003A
• + STMicroelectronics L4970
• + ON Semiconductor MBI5021
• + Fairchild Semiconductor FDS9934A
• Other similar ICs with different pinouts or features.