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Product details

Parameters

Drivers per package 8 Switching voltage (Max) (V) 50 Output voltage (Max) (V) 50 Peak output current (mA) 500 Delay time (Typ) (ns) 130 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

SOIC (DW) 18 119 mm² 11.55 x 10.3 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
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Description

The ULN2803A device is a 50 V, 500 mA Darlington transistor array. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 mA. The Darlington pairs may be connected in parallel for higher current capability.

Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2803A device has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet ULN2803A Darlington Transistor Arrays datasheet (Rev. H) Feb. 14, 2017
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 simulate a load switch circuit with varying input voltages and loads Nov. 14, 2016
Technical articles How to protect your server from hot swap events Aug. 08, 2016
Technical articles Simplify digital hot swap design using the PI-Commander GUI Jun. 06, 2016
Technical articles New approach for inrush current clamping with smart high side switch Mar. 26, 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)
  • (...)

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
  • (...)

CAD/CAE symbols

Package Pins Download
SOIC (DW) 18 View options

Ordering & quality

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