ULN2003BDR

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ULN2003BDR

IC PWR RELAY 7NPN 1:1 16SOIC

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  • Mfr. Part #ULN2003BDR
  • Package
  • Datasheet
  • In Stock8390

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Specifications

Series ULx200xA
Part Status Obsolete
Base Product Number ULN2003
Operating Temperature -40°C ~ 105°C (TA)
Mounting Type Surface Mount
Package 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC
Packaging Cut Tape (CT), Tape & Reel (TR)

Overview

Description

The ULN2003BDR is a high-voltage, high-current Darlington transistor array designed to drive inductive loads. It consists of seven NPN Darlington pairs, enabling it to control a variety of devices such as relays, motors, and lamps. The device features a wide operating voltage range, typically up to 50V, and can handle continuous current up to 500mA per channel.
The ULN2003BDR includes built-in flyback diodes, which protect the circuit from voltage spikes generated when switching inductive loads. This feature makes it ideal for applications in automation, robotics, and control systems. It is commonly used in conjunction with microcontrollers, such as Arduino or Raspberry Pi, to facilitate the switching of higher power components.
The package type is usually DIP-16, making it easy to integrate into breadboards and prototyping setups. Given its versatility and ease of use, the ULN2003BDR remains a popular choice among engineers and hobbyists for driving high-power loads in various electronic projects.

Features

The ULN2003BDR is a high-voltage, high-current Darlington transistor array designed for driving inductive loads such as relays, solenoids, and motors. Key features include:
1. Seven Darlington Pairs: Each channel can drive up to 500 mA with a maximum voltage rating of 50V.
2. Integrated Flyback Diodes: Provides protection against voltage spikes when driving inductive loads, ensuring safe operation.
3. High Input Sensitivity: Compatible with TTL and CMOS logic levels, making it easy to interface with microcontrollers.
4. Compact Package: Available in a 16-pin DIP or SOIC package, suitable for space-constrained applications.
5. Parallel Operation: Multiple outputs can be paralleled for higher current applications.
6. Thermal Protection: Built-in thermal limits prevent overheating during operation.
The ULN2003BDR is widely used in automation, control systems, and robotics for reliably managing high-power devices.

Package

The ULN2003BDR is typically packaged in a Surface-Mount Device (SMD) format known as SOIC-16 (Small Outline Integrated Circuit, 16 pins). This package type is suitable for automated assembly processes and is commonly used in applications involving relay drivers and motor control.

Pinout

The ULN2003BDR is a high-voltage, high-current Darlington transistor array commonly used for driving inductive loads such as relays, motors, and lamps. It features a total of 16 pins.
Here is a concise breakdown of the pin functions:
1. Pins 1-7: These are the input pins (IN1 to IN7) that receive control signals to activate corresponding output drivers.
2. Pins 8-14: These are the output pins (OUT1 to OUT7) that drive the connected loads.
3. Pin 9: This is the common emitter pin (COM), which is typically connected to the positive supply voltage (e.g., +5V or +12V) for enabling flyback diodes.
4. Pin 15: This is the ground pin (GND).
5. Pin 16: This is an additional no-connect (NC) pin, which is not used.
The ULN2003BDR is particularly useful in interfacing low-power microcontrollers with high-power devices.

Manufacturer

The ULN2003BDR is manufactured by Texas Instruments, a prominent semiconductor company. Texas Instruments (TI) specializes in designing and manufacturing a wide range of technology products, including analog and embedded processing products. Founded in 1930, TI is known for its innovation in the electronics industry, producing components used in various applications such as automotive, industrial, consumer electronics, and communications. The ULN2003BDR is a high-voltage, high-current Darlington transistor array commonly used for driving motors and relays in electronic circuits. TI's extensive portfolio and commitment to research and development make it a leader in the semiconductor market.

Application

The ULN2003BDR is a versatile Darlington transistor array primarily used for driving inductive loads such as relays, motors, and lamps. Common applications include automation systems, stepper motor control, and interfacing with microcontrollers to drive high-current or high-voltage devices. It is also utilized in signal amplification and controlling multiple outputs in robotics and embedded systems.

Equivalent

The ULN2003BDR is a popular Darlington transistor array. Equivalent products include:
1. ULN2003A
2. ULN2004A
3. ULN2803A
4. ULN2003B (various package types)
These devices serve similar purposes in driving loads and relays, but may vary in the number of outputs or specifications. Always check datasheets for specific requirements.

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