Overview
The ULN2003AID, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes designed for switching inductive loads. The ULN2003AID is part of the ULx2003A family, which has proven versatility across a wide range of applications due to its integration of high-current and high-voltage capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current (single output) | 500 | mA |
| High-Voltage Outputs | 50 | V |
| Operating Temperature Range | -40 to 105 | °C |
| Number of Channels | 7 | |
| Package Type | SOIC (D) | |
| Number of Pins | 16 | |
| Input Voltage Compatibility | TTL or 5V CMOS | |
| Series Base Resistor | 2.7 kΩ |
Key Features
- 500mA-rated collector current per single output
- High-voltage outputs: 50V
- Output clamp diodes for inductive load protection
- Inputs compatible with various types of logic (TTL or 5V CMOS)
- Relay-driver applications and other high-current drive needs
- Darlington pairs can be paralleled for higher current capability
Applications
- Relay drivers
- Hammer drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
- Solenoids, small motors, and other inductive load applications
Q & A
- What is the collector current rating of a single Darlington pair in the ULN2003AID?
The collector current rating of a single Darlington pair is 500mA.
- What is the maximum high-voltage output of the ULN2003AID?
The maximum high-voltage output is 50V.
- What type of logic inputs are compatible with the ULN2003AID?
The inputs are compatible with TTL or 5V CMOS devices.
- What is the purpose of the output clamp diodes in the ULN2003AID?
The output clamp diodes are used to suppress kick-back voltage from inductive loads.
- Can the Darlington pairs in the ULN2003AID be paralleled for higher current capability?
- What is the operating temperature range of the ULN2003AID?
The operating temperature range is -40°C to 105°C.
- How many channels does the ULN2003AID have?
The device has 7 channels.
- What type of package does the ULN2003AID come in?
The device comes in a SOIC (D) package with 16 pins.
- Is the ULN2003AID still in production?
No, the ULN2003AID is obsolete and no longer in production. New designs should consider an alternate product.
- What are some common applications of the ULN2003AID?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
