ULN2804A Darlington transistor array
Description:
The ULN2804A is a high-voltage, high-current Darlington transistor array. It consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. This IC is commonly used in applications requiring high-current switching such as relays, motors, lamps, and LED displays.
Key Features:
- Seven Darlingtons per package
- Output current: 500 mA (continuous) per channel, 600 mA (peak)
- High-voltage outputs: 50V
- Inputs compatible with TTL and CMOS logic
- Common-cathode clamp diodes for inductive load driving
- Input resistors for improved noise immunity
- Output flyback diodes for inductive transient suppression
- Package Type: DIP-18
- Output Voltage: 50V
- Output Current (Continuous): 500 mA per channel
- Output Current (Peak): 600 mA per channel
- Input Voltage (High): 2.4V (min)
- Input Voltage (Low): 0.8V (max)
- Operating Temperature Range: -20°C to +85°C
- Dimensions: 19.81 mm x 6.35 mm x 4.57 mm
- Weight: 1.37 g
- Relay Drivers: Used to drive relay coils in control systems.
- Motor Drivers: Controls small motors in robotics and automation.
- Lamp Drivers: Switches on/off lamps and indicators in automotive and industrial applications.
- LED Display Drivers: Drives LED segments in alphanumeric displays.
- Sensor Interface: Interfaces with sensors for signal amplification and conditioning.