Product details

Drivers per package 7 Switching voltage (Max) (V) 50 Output voltage (Max) (V) 50 Peak output current (mA) 500 Delay time (Typ) (ns) 250 Input compatibility CMOS, TTL Vol @ lowest spec current (Typ) (mV) 900 Iout/ch (Max) (mA) 500 Iout_off (Typ) (uA) 50 Rating Catalog
Drivers per package 7 Switching voltage (Max) (V) 50 Output voltage (Max) (V) 50 Peak output current (mA) 500 Delay time (Typ) (ns) 250 Input compatibility CMOS, TTL Vol @ lowest spec current (Typ) (mV) 900 Iout/ch (Max) (mA) 500 Iout_off (Typ) (uA) 50 Rating Catalog
PDIP (N) 16 181 mm² 19.3 x 9.4 SOIC (D) 16 59 mm² 9.9 x 6 SOP (NS) 16 80 mm² 10.2 x 7.8 TSSOP (PW) 16 22 mm² 4.4 x 5 TSSOP (PW) 16 22 mm² 5 x 4.4
  • 500-mA-Rated Collector Current (Single Output)
  • High-Voltage Outputs: 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic
  • Relay-Driver Applications
  • 500-mA-Rated Collector Current (Single Output)
  • High-Voltage Outputs: 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic
  • Relay-Driver Applications

The ULx200xA devices are high-voltage, high-current Darlington transistor arrays. Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.

The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. For 100-V (otherwise interchangeable) versions of the ULx2003A devices, see the SLRS023 data sheet for the SN75468 and SN75469 devices.

The ULN2002A device is designed specifically for use with 14-V to 25-V PMOS devices. Each input of this device has a Zener diode and resistor in series to control the input current to a safe limit. The ULx2003A devices have a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

The ULx2004A devices have a 10.5-kΩ series base resistor to allow operation directly from CMOS devices that use supply voltages of 6 V to 15 V. The required input current of the ULx2004A device is below that of the ULx2003A devices, and the required voltage is less than that required by the ULN2002A device.

The ULx200xA devices are high-voltage, high-current Darlington transistor arrays. Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.

The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. For 100-V (otherwise interchangeable) versions of the ULx2003A devices, see the SLRS023 data sheet for the SN75468 and SN75469 devices.

The ULN2002A device is designed specifically for use with 14-V to 25-V PMOS devices. Each input of this device has a Zener diode and resistor in series to control the input current to a safe limit. The ULx2003A devices have a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

The ULx2004A devices have a 10.5-kΩ series base resistor to allow operation directly from CMOS devices that use supply voltages of 6 V to 15 V. The required input current of the ULx2004A device is below that of the ULx2003A devices, and the required voltage is less than that required by the ULN2002A device.

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Technical documentation

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Type Title Date
* Data sheet ULN200x, ULQ200x High-Voltage, High-Current Darlington Transistor Arrays datasheet (Rev. P) 09 Jul 2019
E-book 11 Ways to Protect Your Power Path white paper 03 Jul 2019
Application note Basics of Power Switches (Rev. A) 26 Apr 2019
Application note Stepper Motor Driving with Peripheral Drivers (Rev. A) 02 Dec 2016
Technical article How to create a dynamic power solution for stepper motors, relays and LEDs 01 Nov 2016
User guide BOOSTXL-ULN2003 Dual Stepper Motor Driver BoosterPack Hardware 12 Apr 2016
Technical article Maker takes solar energy on-the-go 24 Mar 2015
Application note Improved Thermal Dissipation and Energy Efficiency for Peripheral Driving 30 Oct 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Development kit

BOOSTXL-ULN2003 — Dual Stepper Motor Driver BoosterPack featuring ULN2003 and CSD17571Q2 NexFET™

The BOOSTXL-ULN2003 is 2A stepper motor driver kit which features TI's ULN2003A bipolar transistor array and the CSD1751Q2 NexFET™. This BoosterPack™ contains everything needed to drive up to 2 stepper motors or 8 channels, with up to 30V and supports both serial and parallel (...)

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

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TIDA-01329 — Configurable Stepper Driver for HVAC Louver and Motor Control Reference Design

This reference design provides a flexible stepper motor system designed to drive up to two stepper motors, or 8 peripherals, while reducing the number of GPIOs needed from the host controller reducing overall cost. The system is suitable for applications requiring stepper motors or coils up to (...)
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PDIP (N) 16 View options
SO (NS) 16 View options
SOIC (D) 16 View options
TSSOP (PW) 16 View options

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