ULN2803ADWRG4

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ULN2803ADWRG4

+Nomenclature

TRANS 8NPN DARL 50V 0.5A 18SOIC

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Spécifications

Attribut Valeur
PartStatus Discontinued at Digi-Key
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
SupplierDevicePackage 18-SOIC
Package/Case 18-SOIC (0.295", 7.50mm Width)
BaseProductNumber ULN2803

Présentation

Description

The ULN2803ADWRG4 is an integrated circuit (IC) designed primarily as a high-voltage and high-current driver. It contains eight NPN Darlington pairs, making it suitable for driving inductive loads such as relays, motors, and lamps. Each channel can handle up to 500 mA and support a maximum voltage of 50 V.
This IC is particularly useful in applications requiring control of multiple outputs from a microcontroller or digital logic. It accepts TTL and CMOS logic levels, simplifying interfacing to low-voltage systems. The ULN2803ADWRG4 also includes built-in flyback diodes for protection against voltage spikes generated by inductive loads, enhancing reliability.
Key features include a wide operating temperature range, ease of use in various configurations, and a compact DIP package. It’s commonly found in automation, robotics, and various electronic control systems. Overall, the ULN2803ADWRG4 is a versatile component for managing higher power loads in digital applications.

Equivalent

The ULN2803ADWRG4 is a high-voltage, high-current Darlington driver. Equivalent products include ULN2803A, ULN2803, and ULN2003A. You may also consider similar driver ICs like the SN754410 or the TIP120, depending on specific application requirements. Always verify specifications and pin configurations to ensure compatibility.

Features

The ULN2803ADWRG4 is an 8-channel Darlington transistor array designed for driving high-current loads. Key features include:
1. High Current Capacity: Each output can handle up to 500 mA, making it suitable for driving relays, lamps, and other inductive loads.
2. High Voltage Operation: It can operate up to 50 V, allowing compatibility with various applications.
3. Integrated Diodes: Each channel includes flyback diodes for inductive load protection, eliminating the need for external components.
4. TTL Compatibility: The inputs are compatible with standard TTL logic levels, facilitating easy interfacing with microcontrollers and digital circuits.
5. Compact Package: Available in a 20-PDIP or surface mount package, providing flexibility in design.
6. Thermal Protection: The array features built-in thermal protection to prevent overheating during operation.
Overall, the ULN2803ADWRG4 is ideal for applications requiring reliable control of high-power devices in an efficient and compact form factor.

Pinout

The ULN2803ADWRG4 is an octal Darlington transistor array that contains eight pairs of Darlington transistors, which are designed to drive loads. It features a total of 18 pins.
Pin Count and Functions:
1. Inputs (1-8): Pins 1-8 (IN1 to IN8) are used for signal input, where each pin drives a corresponding output.
2. Common Emitter (COM): Pin 9 connects to a common emitter for all output transistors.
3. Outputs (9-16): Pins 10-17 (OUT1 to OUT8) are the output pins which connect to the loads.
4. Ground (GND): Pin 18 serves as the ground connection.
The ULN2803ADWRG4 can handle high current and high voltage applications, making it suitable for driving relays, motors, and lamps in automation and control systems.

Manufacturer

The ULN2803ADWRG4 is manufactured by Texas Instruments (TI), a prominent semiconductor company based in the United States. Texas Instruments specializes in designing and manufacturing a wide range of electronic components, including analog and digital signal processing chips, microcontrollers, and various integrated circuits. The company serves diverse applications across industries such as automotive, industrial, communications, and consumer electronics. Texas Instruments is known for its innovation in analog technology, and its products are widely used in electronic devices and systems globally. The ULN2803ADWRG4 itself is a high-voltage, high-current Darlington transistor array, often used for driving loads in applications like relay control, motor drivers, and LED lighting.

Application

The ULN2803ADWRG4 is an octal high-voltage, high-current Darlington transistor array used in various applications, including:
1. Relay Driving: It can control multiple relays in automation and control systems.
2. Lamp and Motor Control: Suitable for driving incandescent lamps and small motors.
3. LED Driving: Used in lighting applications for controlling multiple LEDs.
4. Data Acquisition Systems: Interfaces with sensors and transducers requiring high current output.
5. Industrial Automation: Common in PLC interfaces for controlling actuators and other devices.
Its versatility makes it ideal for interfacing between TTL/CMOS logic and higher power loads.

Package

The ULN2803ADWRG4 is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package) format. This package type is designed for surface mounting and is characterized by its compact size, making it suitable for space-constrained applications.

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