ULN2003 Motor Driver IC

The ULN2003 is a high-voltage, high-current Darlington transistor array that is commonly used for driving various loads such as relays, stepper motors, and LEDs. This IC contains seven Darlington pairs, each capable of driving loads up to 500mA. It is ideal for interfacing between low-power logic circuits and high-power loads, making it a versatile component for a wide range of applications in robotics, automation, and control systems.

Technical Specifications:

• IC Type: Darlington transistor array
• Model: ULN2003
• Number of Channels: 7
• Output Current: 500mA per channel
• Output Voltage: 50V max
• Input Voltage: Compatible with TTL and 5V CMOS logic
• Base Resistors: Included for each Darlington pair
• Clamp Diodes: Included for inductive load protection
• Package Type: 16-pin DIP (Dual In-line Package)

Pin Configuration:

1. Pin 1: Input 1
2. Pin 2: Input 2
3. Pin 3: Input 3
4. Pin 4: Input 4
5. Pin 5: Input 5
6. Pin 6: Input 6
7. Pin 7: Input 7
8. Pin 8: Ground (GND)
9. Pin 9: Common (COM) – Connected to the load supply voltage
10. Pin 10: Output 7
11. Pin 11: Output 6
12. Pin 12: Output 5
13. Pin 13: Output 4
14. Pin 14: Output 3
15. Pin 15: Output 2
16. Pin 16: Output 1

Features:

• High-Current Capability: Each channel can drive up to 500mA, suitable for high-power loads.
• Built-In Diodes: Includes clamp diodes for protection against inductive spikes from loads such as motors and relays.
• TTL/CMOS Compatibility: Inputs are compatible with TTL and 5V CMOS logic levels.
• Integrated Base Resistors: Simplifies circuit design by eliminating the need for external resistors.
• Versatile Applications: Ideal for driving stepper motors, relays, LEDs, and other high-current loads.
• Compact Design: 16-pin DIP package for easy integration into your projects.

Applications:

• Stepper motor drivers
• Relay drivers
• LED matrix drivers
• Lamp drivers
• Solenoid drivers
• Signal amplification

How to Use:

1. Connect the Logic Inputs: Connect the inputs (Pins 1-7) to the control signals from your microcontroller or other logic circuits.
2. Power the IC: Connect Pin 8 to ground and Pin 9 to the power supply of the load (common pin for internal clamp diodes).
3. Connect the Outputs: Connect the outputs (Pins 10-16) to the loads you wish to drive.
4. Control the Loads: Use your logic signals to switch the loads on and off via the Darlington pairs within the ULN2003.

The ULN2003 Motor Driver IC is a powerful and versatile component, making it an essential part of your electronics toolkit for controlling high-current loads with ease.

Package includes

1 x ULN2003 Motor Driver IC