The ULN2003ADR is a high-voltage, high-current Darlington transistor array designed for interfacing between low-level logic circuits and higher-power loads. This component, manufactured by Texas Instruments, is known for its reliability and robust performance in driving a wide range of inductive loads. It consists of seven open-collector Darlington pairs with common emitters. This IC is specifically designed for applications such as relay drivers, stepper motor drivers, and LED displays where high current drive capability is required.

Applications

Relay Drivers: The ULN2003ADR is commonly used in relay driver circuits for industrial control systems, home automation, and automotive applications. It provides the necessary current amplification to control relay coils.

Stepper Motor Drivers: In robotics and CNC machines, the ULN2003ADR is used to drive the phases of stepper motors. Its high current capability and protection features ensure smooth and reliable motor operation.

LED Displays: LED matrices and displays often require high current drive to illuminate the LEDs. The ULN2003ADR can be used to drive the LED segments efficiently and control their brightness levels.

Solenoid Control: In applications where solenoids are used for actuation, the ULN2003ADR provides the necessary current amplification to activate and control the solenoids reliably.

Lamp Drivers: Lamps and incandescent bulbs can be controlled using the ULN2003ADR for applications such as lighting systems, indicators, and automotive lighting applications.

• Relay Drivers

• Stepper and DC Brushed Motor Drivers

• Lamp Drivers

• Display Drivers (LED and Gas Discharge)

• Line Drivers

• Logic Buffers

Specifications

• Output Voltage: Up to 50V
• Output Current: Up to 500mA per channel
• Number of Channels: 7
• Input Voltage: 5V to 15V
• Operating Temperature Range: -40°C to +105°C

Features

• High-Voltage Outputs: Capable of driving loads up to 50V.
• High-Current Outputs: Each channel can handle up to 500mA.
• Seven Darlington Pairs: Provides a total of 14 transistors for driving multiple loads.
• Overtemperature Shutdown: Protects the IC from overheating.
• Diode Clamps: Protects against voltage spikes from inductive loads.
• Common Emitters: Simplifies wiring for common grounded loads.

Package contains 2 x ULN2003ADR SOP-16