Texas Instruments ULN2003AD Darlington Transistor Array, 7 Channel, 50V, 500mA

The Texas Instruments ULN2003AD is a high-voltage, high-current Darlington transistor array, designed for a wide range of switching and driver applications. Each of its seven channels contains an open-collector Darlington pair with a common emitter, enabling it to switch loads up to 50V and 500mA with ease. The device is supplied in a compact 16-pin SOIC package, making it suitable for space-constrained designs.

This component includes output clamp diodes, which safely handle inductive loads such as relays and motors, and its inputs are compatible with various logic families, simplifying interface with microcontrollers and other digital circuits. The ULN2003AD operates reliably across an ambient temperature range of -40°C to 70°C, ensuring performance in demanding environments.

Key Features

• Seven Darlington outputs (open collector) for high current drive.
• 500mA collector current rating per channel.
• 50V collector-emitter voltage rating.
• Integral output clamp diodes for inductive load protection.
• Inputs compatible with TTL, CMOS, and other logic types.
• Low collector cutoff current (50µA at VCE = 50V).
• 2.4V ON-state input voltage at IC = 200mA.
• 16-pin SOIC package for compact designs.
• Operating ambient temperature range: -40°C to 70°C.

Whether you are driving relays, stepper or DC brushed motors, lamps, or displays, the ULN2003AD offers a robust and versatile solution. Its reliable performance and ease of integration make it a preferred choice for both prototyping and production.