The ULN2803AG is an 8-channel Darlington transistor array IC designed for driving relays, LEDs, solenoids, stepper motors, and other high-current loads from TTL and CMOS logic circuits. Housed in a compact SOP-18 surface-mount package, it integrates eight NPN Darlington pairs with common-emitter outputs and built-in flyback diodes for inductive load protection. The ULN2803AG is widely used in microcontroller-based systems, industrial automation, embedded electronics, and control applications.
Features
- Eight NPN Darlington transistor driver channels.
- High-voltage outputs up to 50V.
- 500mA continuous collector current per channel.
- Integrated suppression diodes for inductive loads.
- TTL and 5V CMOS logic compatible inputs.
- High current gain for efficient load driving.
- Low standby power consumption.
- SOP-18 surface-mount package.
- Suitable for automated SMT assembly.
- RoHS compliant.
Applications
- Relay driver circuits.
- Stepper motor and DC motor drivers.
- LED matrix and display drivers.
- Solenoid and valve control.
- Microcontroller output expansion.
- Industrial automation systems.
- PLC and embedded control circuits.
- Printer and office automation equipment.
- Home automation devices.
- General-purpose high-current switching.
Specification
| Parameter | Value |
| Part Number | ULN2803AG |
| Device Type | Darlington Transistor Array |
| Number of Channels | 8 |
| Output Type | NPN Open Collector |
| Maximum Output Voltage | 50V |
| Maximum Output Current | 500mA per Channel |
| Input Compatibility | TTL and 5V CMOS Logic |
| Protection | Integrated Flyback Diodes |
| Package | SOP-18 (SMD) |
| Operating Temperature | -40°C to +85°C (Typical) |
FAQs
About Shipping Charges and delivery time
- Standard shipping: Rs 100 /-. The order gets delivered within 4-6 working days. (6-7 days in case of the battery as it travels through the surface).
- Free shipping is applicable on purchase of Rs 999 and above. The order gets delivered within 4-6 working days. (8-10 days in case of the battery, as it travels through the surface)
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