Home Power management Power switches Low-side switches

ULN2003A

ACTIVE
Order now

50-V, 7-ch darlington transistor array, -20C to 70C

Data sheet
Top
50-V, 7-ch darlington transistor array, -20C to 70C

ULN2003A

ACTIVE
Data sheet Order now

Product details

Parameters

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 open-in-new Find other Low-side switches

Package | Pins | Size

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 open-in-new Find other Low-side switches

Features

  • 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

All trademarks are the property of their respective owners.

open-in-new Find other Low-side switches

Description

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.

 open-in-new Find other Low-side switches
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet ULN200x, ULQ200x High-Voltage, High-Current Darlington Transistor Arrays datasheet (Rev. P) Jul. 09, 2019
E-book 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application note Basics of Power Switches (Rev. A) Apr. 26, 2019
Application note Stepper Motor Driving with Peripheral Drivers (Rev. A) Dec. 02, 2016
Technical articles How to create a dynamic power solution for stepper motors, relays and LEDs Nov. 01, 2016
User guide BOOSTXL-ULN2003 Dual Stepper Motor Driver BoosterPack Hardware Apr. 12, 2016
Technical articles Maker takes solar energy on-the-go Mar. 24, 2015
Application note Improved Thermal Dissipation and Energy Efficiency for Peripheral Driving Oct. 30, 2014

Design & development

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

Hardware development

DEVELOPMENT KIT Download
25
Description

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 interfaces (...)

Features
  • 3.3V, 5V to 30V Selectable split rail supplies for analog and MCU
  • Supports up to 2.5A peak total current, 500mA per channel with up to 8 channels
  • Direct interface per channel or serial shift-register adressable inputs
  • Complete stepper motor driver stage in ultra small form factor (17.46mm x 22.23 mm)
  • (...)
View details
DEVELOPMENT KIT Download
749
Description
This reference design implements single phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is voltage source mode using an output LC filter, this control mode is typically used in Uninterrupted (...)
Features
  • powerSUITE supported Voltage Source Inverter and Grid Connected Inverter Design
  • Peak 98% efficiency in Voltage Source Mode and <4% THD in case of non linear loads
  • Input 380V DC, Output 220Vrms 50Hz or 110Vrms 60Hz and 600VA Max
  • Hardware Files are in DigitalPower SDK at solutions\tidm_hv_1ph_dcac
View details

Design tools & simulation

SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Single-Phase Inverter Reference Design With Voltage Source and Grid Connected Modes
TIDM-HV-1PH-DCAC — This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is the voltage source mode using an output LC filter. This control mode is typically used in (...)
document-generic Schematic
REFERENCE DESIGNS Download
Configurable Stepper Driver for HVAC Louver and Motor Control Reference Design
TIDA-01329 — 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 50V (...)
document-generic Schematic
REFERENCE DESIGNS Download
Smart brake control and diagnostics reference design for servo drives and robotics
TIDA-01600 — This reference design implements safe brake control functionality in servo drives as per IEC EN 61800-5-2 by providing two channel output signals to control an external holding brake. The holding brake will be latched when the power supply is cut off and released when voltage is applied to the coil (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
PDIP (N) 16 View options
SO (NS) 16 View options
SOIC (D) 16 View options
TSSOP (PW) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Training series

View all TI training and videos

Videos