Description
ULN2003AIDR Driver Array
500mA Rated Collector Current meets 50V Output Voltage – The Professional 7-Channel Darlington Transistor Array Choice for Stepper Motors, Relays, and Solenoid Actuators Control.
// Integrated Inductive Clamp Diodes TTL/CMOS Compatible 16-Pin SOIC Portfolio
The High-Current Low-Side Load Driving Advantage
The ULN2003AIDR represents a premier professional 16-pin SOIC packaged seven-channel monolithic high-voltage, high-current Darlington transistor array solution engineered for space-constrained, high-throughput hardware architectures demanding absolute signal processing efficiency and robust inductive load protections. Featuring high-voltage outputs up to 50V and continuous collector current currents up to 500mA per channel, this module processes high-power driving logic lines flawlessly without parasitic leakage hazards or systemic performance lagging. Housed in a standard surface-mount package layout, it secures pure, deterministic low-side sinking paths and completely cuts off discrete component layout bottlenecks.
- Seven high-gain Darlington pairs supporting parallel connection configurations for higher current handling cleanly
- Integrated free-wheeling clamp diodes shielding sensitive logic controllers against inductive transients safely
- Optimized 2.7kΩ base resistors providing full compatibility with standard 5V TTL and CMOS MCU interfaces smoothly
Key Performance Advantages
500mA Sinking Sink
Handles robust current sinking parameters per channel, driving multiple relays, high-power lamps, or inductive solenoids cleanly.
On-Chip Clamp Diodes
Deploys internal flyback suppression boundaries on every output pin, absorbing inductive flyback spikes from coils safely.
16-Pin SOIC Package
Housed inside a tight narrow-body surface mount layout, maximizing board-space utilization and enabling high-density SMT scaling smoothly.
Technical Specifications
| Parameter Node | Detailed Engineering Specification |
|---|---|
| Manufacturer | Texas Instruments (Premium Original Factory Sealed Sourcing) |
| Part Number (MPN) | ULN2003AIDR (ULN2003AI Matrix Line) |
| Transistor Type | 7-Channel Darlington Transistor Array Configuration |
| Max Output Voltage (Vce) | 50 VDC Fixed Standby Off-State Collector-Emitter Braking Limit |
| Rated Collector Current | 500 mA Continuous Load Current Sinking per Output Channel |
| Input Interface Compatibility | Integrated 2.7kΩ Base Resistors supporting 5V TTL / CMOS Control Rails |
| Output Saturation Voltage | 1.1V to 1.3V Typical (at high current density nodes) |
| Transient Protection | Co-integrated Common-Cathode Flyback Suppressor Diodes Matrix |
| Package / Case Form | SOIC-16 Narrow Body (Plastic 16-Lead Surface Mount 3.9mm Substrate Width) |
| Operating Temperature | -40°C to +105°C Extended Industrial Component Profile Range |
Versatile Multi-Channel Driver Applications
- Relay Bank Subsystems: Primary driver choice energizing multiple telecom or industrial power relays cleanly and safely.
- Unipolar Stepper Motors: Perfect 7-channel phase routing structure driving low-power unipolar stepper motors smoothly.
- High-Power LED Elements: Handles demanding display matrix configurations and segment lamps without external sinking transistors.
- Solenoids & Air Valves: Optimizes continuous current inductive tracking required inside automation actuators and fluid valves.
Industrial Quality Protections
100% Original Sourcing: Procured securely through fully audited tier-1 franchise lines, completely ensuring anti-counterfeit protection.
Anti-Static Handling: Stored and picked in full alignment with international ANSI/ESD cleanroom facility benchmarks.
Full Batch Traceability: Verified via intensive certificate analysis and rigorous documentation tracking prior to export dispatch.
HIGH-PERFORMANCE DARLINGTON DRIVER SOLUTIONS // DIRECT SOURCE ARCHITECTURE