Manufacturer Part Number: ULN2003ADR Manufacturer / Brand: TI
Part of Description: Automotive load dump compatibility, Inductive load compatibility Lead Free Status / RoHS Status: table_img Lead free / RoHS Compliant
Ship From: HK/Shen Zhen Shipment Way: DHL/Fedex/TNT/UPS

Product parameters

Mounting StyleSMD/SMT
Rating32 bit
Peak reflowLevel-1-260C-UNLIM
Package / CasePins SOIC (D) | 16
Maximum Clock Frequency100 MHz
Minimum Operating Temperature– 40 C
Maximum Operating Temperature+ 70 C
Factory Pack Quantity2500
Iout/ch (max) (mA)500
Iout_off (typ) (µA)50
Imax (A)0.5
Device typeLow-side switches

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    The ULN2003ADR is a high-voltage, high-current Darlington transistor array integrated circuit (IC) manufactured by Texas Instruments. It is designed for interfacing between low-level logic signals and high-current loads such as relays, motors, and lamps in various applications.

    Key Features:

    • Darlington Transistor Array: Contains seven Darlington pairs, each capable of driving loads up to 500 mA (600 mA peak) per channel.
    • Input Compatibility: Compatible with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels.
    • Output Voltage: Handles output voltages up to 50V.
    • Built-in Clamp Diodes: Provides protection against inductive loads.
    • Package Type: Available in various packages including SOIC (Small Outline Integrated Circuit) and TSSOP (Thin Shrink Small Outline Package) for different application requirements.

    Typical Applications:

    • Relay Drivers: Controls relay coils directly.
    • Stepper Motor Drivers: Drives stepper motors in various motion control applications.
    • Lamp Drivers: Switches and controls lamps and incandescent displays.
    • LED Drivers: Provides current to drive LED arrays.
    • Peripheral Drivers: Interfaces with various peripheral devices requiring high-current switching.


    • High Current Capability: Suited for applications requiring high-current switching.
    • Ease of Use: Simplifies interfacing between low-level logic and high-current loads.
    • Integrated Protection: Built-in clamp diodes protect against inductive kickback.
    • Compact Design: Available in compact surface-mount packages, facilitating space-constrained designs.