The ULN2804 is a versatile Darlington transistor array that includes eight transistors with common emitters and integral suppression diodes, making it ideal for driving inductive loads. Each Darlington transistor in the array can handle a peak load current of 600mA (500mA continuous) and withstand at least 50V in the off state. The outputs can be paralleled to increase current capability, and the ULN2804A variant includes a 10.5kΩ input resistor for 6-15V CMOS compatibility.
Key Features:
- Eight Darlingtons with Common Emitters: Provides high current gain and simplifies circuit design.
- Output Current: Up to 500mA continuous, 600mA peak.
- Output Voltage: Can withstand up to 50V.
- Integral Suppression Diodes: Protects against voltage spikes in inductive loads.
- Compatibility: Versions available for all popular logic families.
- Simplified Board Layout: Inputs pinned opposite outputs for easy layout.
Specifications:
- Output Voltage: 50V
- Input Voltage: 30V
- Continuous Collector Current: 500mA
Applications:
- Inductive Load Driving: Ideal for driving relays, motors, and other inductive loads.
- High-Current Switching: Suitable for applications requiring high current and voltage handling.
- Logic Interface: Compatible with various logic families, including CMOS.
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