ULN2804APG High Voltage Darlington Transistor Arrays IC DIP 18 Package

ULN2804APG High Voltage Darlington Transistor Arrays IC DIP 18 Package

The ULN2804APG is a high-voltage, high-current Darlington transistor array IC designed to drive multiple loads directly from low-level logic signals. It contains eight NPN Darlington transistor pairs with open-collector outputs, allowing it to interface microcontrollers, logic ICs, or digital systems with higher-power devices.

Each channel features a built-in flyback (clamp) diode, making the IC especially suitable for switching inductive loads such as relays, motors, and solenoids. The device simplifies circuit design by reducing external components and providing reliable, compact power switching in a single DIP-18 through-hole package.

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Features

• Eight NPN Darlington transistor channels
• High current output capability (up to 500 mA per channel)
• High voltage output rating (up to 50 V)
• Built-in clamp diodes for inductive load protection
• Logic-level compatible inputs (TTL and CMOS)
• Open-collector outputs for flexible load connections
• Common emitter configuration
• Low input current requirement
• Through-hole DIP-18 package for easy prototyping and PCB mounting

Applications

• Relay driver circuits
• Solenoid and actuator drivers
• DC motor and stepper motor control
• LED and lamp driving
• Display segment drivers
• Industrial automation systems
• Microcontroller and logic IC interfacing
• Automotive and appliance control circuits

uln2804-ic-datasheet