UDN2982LW

The UDN2982LW is a quad darlington source drivers integrated circuit designed for interfacing between low-level logic circuits and high-current loads. It features four high-voltage, high-current darlington transistor arrays with common clamp diodes, making it ideal for driving inductive loads such as relays, solenoids, and stepper motors.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• 1A: Input for driver 1
• 2A: Input for driver 2
• 3A: Input for driver 3
• 4A: Input for driver 4
• COM: Common connection for clamp diodes
• 1Y: Output for driver 1
• 2Y: Output for driver 2
• 3Y: Output for driver 3
• 4Y: Output for driver 4
• VCC: Positive power supply
• GND: Power ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UDN2982LW IC for a visual representation.

Key Features

• Quad Darlington Transistor Arrays: Provides four high-voltage, high-current darlington transistor arrays for driving inductive loads.
• Common Clamp Diodes: Includes common clamp diodes to suppress voltage spikes generated by inductive loads.
• Wide Operating Voltage Range: Operates within a wide voltage range, making it compatible with various systems.
• High Output Current: Capable of driving high current loads, suitable for applications requiring robust power delivery.
• Thermal Shutdown Protection: Features thermal shutdown protection to prevent overheating under high load conditions.

Note: For detailed technical specifications, please refer to the UDN2982LW datasheet.

Application

• Relay Driving: Ideal for driving relays in automotive, industrial, and automation applications.
• Solenoid Control: Suitable for controlling solenoids in robotics, machinery, and security systems.
• Stepper Motor Driving: Used for driving stepper motors in precision motion control applications.

Functionality

The UDN2982LW is designed to interface low-level logic signals with high-current loads, providing reliable and efficient control over inductive devices like relays, solenoids, and stepper motors.

Usage Guide

• Power Supply: Connect VCC (Pin 10) to the positive power supply and GND (Pin 11) to the power ground.
• Input Connections: Apply logic signals to the input pins (1A, 2A, 3A, 4A) to control the corresponding driver outputs.
• Output Connections: Connect the driver outputs (1Y, 2Y, 3Y, 4Y) to the inductive loads with appropriate protection diodes.

Frequently Asked Questions

Q: Can the UDN2982LW drive stepper motors directly?
A: Yes, the UDN2982LW is designed to drive stepper motors by providing high-current darlington arrays suitable for motor control applications.

Q: Does the UDN2982LW require external diodes for inductive load protection?
A: The UDN2982LW already includes common clamp diodes for each darlington pair to protect against voltage spikes generated by inductive loads.