ULQ2003ADR: Features, Specs & More
When it comes to driving relays, lamps, or high-current loads directly from logic-level signals, the ULQ2003ADR from Texas Instruments stands out as one of the most trusted solutions in the electronics industry. This compact SOIC-16 Darlington array offers seven integrated NPN channels, making it a convenient and space-efficient way to design reliable driver stages for microcontrollers and digital systems. In this comprehensive article, we'll delve into the intricacies of the ULQ2003ADR, uncovering its definition, key features, specifications, applications, and a closer look at its manufacturer.
Catalog
ULQ2003ADR's Overview
The ULQ2003ADR is a 7-channel NPN Darlington transistor array designed to provide high-current and high-voltage driving capability for a wide range of loads. The device integrates seven open-collector outputs that allow direct interfacing between low-power logic circuits and power-driven components such as relays, solenoids, and stepper motors.
Key Features
Let's delve into the standout features that make the ULQ2003ADR a standout in the world of electronics:
· The device supports a maximum collector-emitter voltage of 50V.
· The Darlington pair design delivers strong current gain on each channel.
· Each output channel supports up to 0.5A continuous collector current.
· The ULQ2003ADR includes seven independent NPN channels.
· Built-in clamp diodes protect against inductive load voltage spikes.
· The device operates reliably up to a junction temperature of 150°C.
· The package is optimized for compact designs with a 16-pin SOIC layout.
· The device supports surface-mount assembly for automated production.
· The ULQ2003ADR provides a gull-wing lead shape for secure PCB soldering.
Specifications
Now, let's take a closer look at the technical specifications that define the capabilities of the ULQ2003ADR:
Type | Parameter |
Type | NPN |
Configuration | Array 7 |
Number of Elements per Chip | 7 |
Maximum Collector-Emitter Voltage (V) | 50 |
Maximum Emitter Base Voltage (V) | 30 |
Maximum Continuous DC Collector Current (A) | 0.5 |
Operating Junction Temperature (°C) | 150 |
Maximum Collector-Emitter Saturation Voltage (V) | 1.2@0.25mA@0.1A|1.4@0.35mA@0.2A|1.7@0.5mA@0.35A |
Minimum Operating Temperature (°C) | -40 |
Maximum Operating Temperature (°C) | 85 |
Packaging | Tape and Reel |
Mounting | Surface Mount |
Package Height | 1.5(Max) mm |
Package Width | 4(Max) mm |
Package Length | 10(Max) mm |
PCB changed | 16 |
Standard Package Name | SO |
Supplier Package | SOIC |
Pin Count | 16 |
Lead Shape | Gull-wing |
Applications
Thanks to its robust NPN Darlington architecture and integrated clamp diodes, the ULQ2003ADR is widely used in control and automation systems. Typical applications include:
· Relay and solenoid driving
· Stepper motor phase driving
· LED and lamp driving for automotive or industrial panels
· Printer head actuation
· High-current digital logic interface
· Power transistor base driving
· Signal buffering in power-dense embedded designs
ULQ2003ADR's Manufacturer
Texas Instruments (TI), established in 1930, is a global leader in semiconductor and technology solutions, known for its pioneering contributions to the electronics industry. Specializing in the design and manufacture of analog and digital circuits, microcontrollers, and processors, TI has played a pivotal role in shaping technological advancements across diverse sectors, including industrial, automotive, consumer electronics, and communication.
Conclusion
The TI ULQ2003ADR is a reliable, high-performance Darlington transistor array that provides strong current-driving capability for a wide range of industrial and embedded applications. Its seven NPN channels, high voltage tolerance, and integrated protection features make it a proven, cost-effective solution for powering relays, motors, and other inductive loads. Whether you are building automation equipment, consumer devices, or embedded control systems, the ULQ2003ADR remains a dependable choice for modern electronic designs.
