| Category | |
| Manufacturer Name | |
| Automotive Grade | |
| Current | |
| Halogen Free | |
| Industrial Grade | |
| Input Type | |
| Input Voltage | |
| Interface | |
| Lead Spacing | |
| Lead Style | |
| Medical Grade | |
| Military Grade | |
| Mounting Type | |
| Number of Channels | |
| Number of Outputs | |
| Operating Temperature | |
| Output Configuration | |
| Output Current | |
| Output Type | |
| Output Voltage | |
| Ratio | |
| SVHC Present | |
| Storage Temperature | |
| Supplier Device Package | |
| Switch Type | |
| Tape & Reel | |
| Voltage |
The ULN2003A is a high-voltage, high-current Darlington driver IC from STMicroelectronics, featuring 7 NPN Darlington pairs. Each pair has a 2.7KΩ resistor for TTL and 5V CMOS compatibility, eliminating the need for logic buffers.
This IC is capable of sinking up to 500mA per channel with a withstand voltage of 50V, making it suitable for driving high-load currents. It operates over a wide voltage range and is designed for direct connection to TTL, CMOS, and PMOS logic. The device includes clamp diodes for switching inductive loads.
Key electrical characteristics include a typical output voltage of 50V and a typical output current of 500mA. The typical collector-emitter saturation voltage is 1.6V at 350mA input current. It operates within a temperature range of -40°C to 85°C.
The ULN2003A is available in a 16-pin DIP package and is suitable for applications such as relay drivers, clamp drivers, stepper motor drivers, and solenoid drivers.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.32 | $0.32 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
-40°C to 85°C.
16-DIP and SOP-16.
-0.5V to 30V.
-0.5V to 50V.
500mA.
7 outputs.
Low-side NPN open-collector outputs.