8 NPN Darlington Pairs: Each device contains eight independent NPN Darlington pairs.High Current Output: Each output can handle up to 500 mA (max) of current.High Sustaining Voltage: Features a minimum output sustaining voltage of 50 V.Integrated Clamp Diodes: Includes built-in clamp diodes to protect against inductive kickback when switching inductive loads.Logic Compatibility: Inputs are compatible with TTL and 5V CMOS logic levels.Pb-Free: The suffix 'G' in the part numbers indicates a Lead (Pb)-Free product.Wide Operating Temperature Range: Operates from -40°C to +85°C.
ULN2803AG comes in a DIP-18 (Dual In-line Package) form factor.
ULN2803AFWG comes in a SO-18 (Small Outline Package).
Control Input Voltage: Compatible with TTL, CMOS, and other logic-level input signals.
Output Type: Open collector, with saturation voltage characteristics.
Output Voltage Rating: Can handle up to 50V.
Output Current: Can drive up to 500mA per channel (with a total of 2.5A max per device).
Total Output Current: The device can handle up to 2.5A of total output current (all channels combined).
Electrical Characteristics:
Input Voltage (V_IN):
Typically 2V for logic-level "high" inputs.
0V for logic-level "low" inputs (compatible with TTL and CMOS signals).
Input Current:
1.35mA (typical) per input pin at 5V logic input.
Output Voltage (V_OUT):
Capable of driving loads with output voltage up to 50V.
Output Saturation Voltage (V_CE(sat)):
1.2V max at 350mA load.
1.5V max at 500mA load.
Total Power Dissipation (P_D):
2W (maximum).
Thermal Resistance Junction-to-Ambient (R_thJA):
100°C/W for DIP-18 package.
85°C/W for SO-18 package.
Operating Temperature Range:
0°C to +70°C (Commercial grade).
Protection and Features:
Flyback Diodes: Integrated flyback diodes for inductive load protection, making the device suitable for driving motors, solenoids, and relays.
Overcurrent Protection: Protects against excessive current draw in each output channel.
Thermal Shutdown: Provides internal thermal protection to prevent damage due to overheating.
Applications:
Relay Drivers: Widely used in industrial automation to control relays for high-power switching.
Motor Drivers: Can drive small motors or actuators in robotics, automation, and appliance control.
Lamp Drivers: Used in controlling high-power lamps and lighting systems.
Solenoid Drivers: Ideal for controlling solenoids in industrial or automotive applications.
Logic-Level to High-Voltage Interface: Can interface low-voltage logic circuits (such as microcontrollers or microprocessors) with high-power, high-voltage devices.
Key Features:
Seven Open-Collector Output Channels: Each capable of handling up to 500mA.
Flyback Diodes for Inductive Loads: Prevents voltage spikes when switching inductive loads (such as motors or relays).
High Voltage & Current Capability: Handles output voltages up to 50V and currents up to 500mA per channel.
TTL and CMOS Logic Compatible Inputs: Easy to interface with digital control systems.
