ULQ2003ADR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
ULQ2003ADR is a 7-channel NPN Darlington transistor array from Texas Instruments, rated 50V/500mA per channel with built-in flyback diodes. Ideal for driving relays, motors, and solenoids. From $0.19, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- ULQ2003ADR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1894(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7-Channel NPN Darlington Array: Each channel handles up to 500mA continuous collector current and 50V breakdown voltage, enabling high-current load switching in a single IC
- Built-in Transient Suppression Diodes: Integrated flyback diodes protect against inductive load transients when driving relays, solenoids, and motors
- Standard Logic-Compatible Inputs: Input thresholds compatible with 3.3V and 5V logic levels, allowing direct interface with microcontrollers, PLCs, and TTL/CMOS devices
- Compact 16-Pin SOIC Package: Small Outline package saves board space versus through-hole alternatives while maintaining thermal performance for industrial applications
- Open-Collector Outputs: Output stage allows flexible voltage translation and wired-OR configurations, supporting load voltages independent of input supply
Applications
The ULQ2003ADR is widely used in industrial automation and consumer electronics for driving inductive loads such as relays, stepping motors, and solenoids from microcontroller or FPGA outputs. Its 7-channel configuration makes it ideal for controlling multi-coil stepper motors, LED segment displays, and lamp driver arrays in a single compact package. Common applications include PLC output modules, printer head drivers, HVAC control boards, and home appliance motor control circuits.
Specifications
| Date Of Intro | 1991-01-01 |
| YTEOL | 0 |
| Built-in Protections | TRANSIENT |
| Driver Number of Bits | 7 |
| Input Characteristics | STANDARD |
| Interface IC Type | BUFFER OR INVERTER BASED PERIPHERAL DRIVER |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Current Flow Direction | SINK |
| Output Current-Max | 0.5A |
| Output Peak Current Limit-Nom | 0.5A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Turn-off Time | 10 µs |
| Turn-on Time | 10 µs |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum current and voltage rating for each channel of the ULQ2003ADR?
Each of the 7 channels in the ULQ2003ADR can handle a continuous collector current of 500mA and a collector-emitter breakdown voltage (BVCEO) of 50V. The peak current per channel can reach 600mA for short durations, making it suitable for driving most relay coils and small motors commonly used in embedded systems.
Can the ULQ2003ADR be driven directly by a 3.3V microcontroller or Arduino?
Yes, the ULQ2003ADR features standard input characteristics compatible with both 3.3V and 5V logic levels. The input resistors are sized to ensure sufficient base drive from TTL and CMOS outputs, including popular microcontrollers like STM32, ESP32, and Arduino boards, without requiring additional level-shifting circuitry.
Does the ULQ2003ADR include flyback protection for inductive loads?
Yes, the ULQ2003ADR has built-in transient suppression diodes (flyback diodes) connected from the output to a common clamp pin. These diodes protect the IC and surrounding circuitry from voltage spikes generated when switching inductive loads such as relays, solenoids, and motor windings, eliminating the need for external freewheeling diodes.
What are common alternatives to the ULQ2003ADR?
Common alternatives include the ULN2003A (through-hole DIP-16 version with identical electrical characteristics), the ULN2803A (8-channel, 50V/500mA Darlington array in DIP-18 or SOIC-18), and the TD62003 from Toshiba. The ULQ2003ADR is the surface-mount SOIC-16 variant optimized for compact PCB designs requiring the same 7-channel Darlington functionality.
What package does the ULQ2003ADR use and what are its dimensions?
The ULQ2003ADR comes in a 16-pin SOIC (Small Outline Integrated Circuit) package, JEDEC code R-PDSO-G16. This surface-mount package has a body width of approximately 3.9mm and a pin pitch of 1.27mm, making it compatible with standard SMT assembly processes. The SOIC package is significantly smaller than the DIP equivalent, saving valuable board space in compact designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5700 | $0.57 |
| 100+ | $0.3409 | $34.09 |
| 500+ | $0.2848 | $142.41 |
| 1000+ | $0.2424 | $242.40 |
| 5000+ | $0.2045 | $1022.60 |
| 12500+ | $0.1894 | $2367.25 |
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