ULN2803AFWG

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ULN2803AFWG

Toshiba

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  • Mfr.부분 #ULN2803AFWG
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사양

개요

Description

The ULN2803AFWG is an integrated circuit designed for driving high-current loads such as relays, lamps, and motors in applications requiring high voltage and current. It consists of eight NPN Darlington transistor pairs, which can handle up to 500 mA per channel and support a collector-emitter voltage of up to 50 V.
This device is commonly used in interfacing TTL or CMOS logic with high-power loads, making it ideal for automation, robotics, and industrial controls. The ULN2803AFWG features built-in flyback diodes for inductive load protection, ensuring safe operation when switching inductive components.
It comes in a 20-pin wide dual in-line package (DIP) or surface mount configuration, with a wide temperature range and robust design suitable for various applications. Overall, the ULN2803AFWG is a versatile, reliable choice for driving multiple outputs in electronic systems.

Features

The ULN2803AFWG is a high-voltage, high-current Darlington transistor array designed for driving inductive loads such as relays, motors, and solenoids. Key features include:
1. Eight Channels: Contains eight independent Darlington pairs, allowing for multiple outputs from a single package.
2. High Voltage and Current Ratings: Capable of handling up to 50V and 500mA per channel, making it suitable for various high-power applications.
3. Integrated Flyback Diodes: Each output includes a built-in flyback diode to protect against voltage spikes, enhancing reliability when driving inductive loads.
4. Common Emitter Configuration: Simplifies wiring and reduces the need for external components.
5. Wide Operating Temperature Range: Typically rated from -40°C to +85°C, allowing for use in diverse environments.
6. TTL Compatible: Inputs are compatible with TTL logic levels, facilitating easy interfacing with microcontrollers and other digital circuits.
7. Compact Package: Available in a 18-pin DIP or surface-mount package, optimizing board space.
These features make the ULN2803AFWG a versatile choice for automation, control systems, and robotics.

Package

The ULN2803AFWG is available in a surface-mount package type, specifically in a 20-lead TSSOP (Thin Shrink Small Outline Package). This package type is designed for compact applications and provides ease of integration onto PCBs.

Pinout

The ULN2803AFWG is an integrated circuit consisting of eight high-voltage, high-current Darlington pairs. It has a total of 18 pins. The pin configuration and functions are as follows:
1. Pins 1-8: Inputs (I1 to I8) - These pins accept the control signals to drive the corresponding outputs.
2. Pins 9-16: Outputs (O1 to O8) - These pins connect to the loads (such as relays, LEDs, etc.) that the circuit will control.
3. Pin 9: Common ground (COM) - This pin is connected to the common emitter of the Darlington pairs, allowing for proper operation when driving inductive loads.
4. Pin 18: V+ (voltage supply) - This is the supply voltage pin, providing the necessary power for the loads connected to the outputs.
The ULN2803AFWG is commonly used in applications where multiple outputs are needed to control high-current loads, such as in driving motors, relays, or lamps.

Manufacturer

The ULN2803AFWG is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments specializes in the design and production of a wide range of analog and digital semiconductor devices, including integrated circuits (ICs) used in various applications such as automotive, industrial, communications, and consumer electronics. Established in 1930 and headquartered in Dallas, Texas, TI is known for its innovation in signal processing and embedded processing technologies. The ULN2803AFWG is a high-voltage, high-current Darlington transistor array, commonly used for driving loads in automation, relay control, and interfacing applications.

Application

The ULN2803AFWG is a high-voltage, high-current Darlington transistor array. It is commonly used in applications such as driving motors, lamps, and relays, interfacing with microcontrollers, and controlling lighting systems. Additionally, it serves in automation systems for switching and control tasks, providing protection against inductive loads. Its ability to handle multiple outputs makes it ideal for applications requiring simultaneous control of multiple devices.

Equivalent

The ULN2803AFWG is a Darlington transistor array. Equivalent products include:
1. ULN2803A
2. ULN2003A
3. ULN2903A
These devices feature similar functionality but may differ in pin configuration or current ratings. Always check the datasheet for specific applications and compatibility.

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