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Product Detailed Parameters
- Description：PROTOTYPE
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Power - Max：-
- Frequency - Transition：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The ULQ2003AQDR-AU is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven independent NPN Darlington pairs within a single SOIC-16 surface-mount package. Each channel provides a maximum collector current of 500 mA and supports a collector-emitter voltage up to 50 V. The device operates across an extended temperature range from -40°C to +85°C. Internal clamping diodes are included on each output to suppress inductive voltage spikes when driving reactive loads such as relays or solenoids. This configuration allows direct interfacing with standard logic families while managing higher power requirements.
Feature Summary
- Integrates seven independent NPN Darlington pairs for multi-channel load switching
- Includes internal flyback diodes on all outputs to protect against inductive kickback
- Designed for direct interface with TTL, CMOS, and other digital logic families
- High current capability per channel suitable for driving relays, lamps, and solenoids
Applications
- Industrial control systems requiring multiple relay or solenoid drivers
- Automotive electronics for lighting and actuator control
- General-purpose logic-to-power interface circuits
- Printer and peripheral driver boards
Procurement Notes
Verify the specific suffix 'AU' against the official Texas Instruments datasheet to confirm it denotes a qualified automotive-grade variant or specific tape-and-reel packaging option. Ensure the ordering part number matches the exact electrical and mechanical specifications required for your design. Cross-reference with authorized distributors to confirm current availability and authenticity.
Selection Notes
Select this component when a design requires multiple high-current switches controlled by low-power logic signals. The integrated Darlington structure eliminates the need for external base resistors. Consider the thermal dissipation capabilities of the SOIC-16 package if operating near the maximum current limits. Verify that the 50V voltage rating exceeds the peak voltage of the connected load.
Part Context
This part belongs to the ULQ2003A family of high-voltage Darlington arrays. It shares functional similarities with the ULN2003 series but typically offers higher voltage ratings. The 'Q' designation often indicates automotive qualification standards, while 'ADR' specifies the SOIC-16 reel packaging. The 'AU' suffix may indicate specific regional or quality certifications.
Replacement Considerations
Direct pin-compatible replacements include the ULN2003ADRG4 and ULQ2003ADRG4. Verify that substitute parts meet the same voltage and current ratings. Check if the alternative component holds the necessary automotive qualifications if the original 'Q' designation implies AEC-Q100 compliance.
