ULN2068B

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ULN2068B

TRANS 4NPN DARL 50V 1.75A 16DIP

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  • Mfr. Partie #ULN2068B
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Spécifications

Part Status Active
Operating Temperature -20°C ~ 85°C (TA)
Mounting Type Through Hole
Package / Case 16-PowerDIP (0.300", 7.62mm)
Supplier Device Package 16-PowerDIP (20x7.10)
Base Product Number ULN2068
Transistor Type 4 NPN Darlington (Quad)
Current - Collector (Ic) (Max) 1.75A
Voltage - Collector Emitter Breakdown (Max) 50V
Vce Saturation (Max) @ Ib, Ic 1.4V @ 2mA, 1.25A
Power - Max 1W

Vue d'ensemble

Description

The ULN2068B is a high-voltage, high-current Darlington transistor array designed for driving inductive loads such as motors, relays, and solenoids. It contains multiple Darlington pairs, featuring a common ground configuration and enabling the control of several devices with a single input signal. The IC is capable of handling up to 50V and can output currents ranging from 0.5A to 2A per channel, making it suitable for various applications in industrial automation and robotics.
Key features include thermal shutdown protection, built-in flyback diodes for inductive kickback protection, and a wide operating temperature range. The ULN2068B is often used in applications requiring high-current switching, providing enhanced efficiency and simplified circuit design. Its compact package and integrated design make it ideal for PCB layout in space-constrained environments.

Features

The ULN2068B is a high-voltage, high-current Darlington transistor array designed for driving inductive loads. Key features include:
1. High Voltage and Current Handling: It supports a collector-emitter voltage of up to 50V and can handle continuous output currents of up to 500mA per channel.
2. Integrated Protection Diodes: Each output includes flyback diodes for inductive kickback suppression, protecting the driver and connected components.
3. Multiple Channels: The device typically contains eight channels, allowing for the control of multiple loads with a single package.
4. Low Input Current: It has a low input current requirement, which makes it compatible with TTL and CMOS logic levels.
5. Thermal Protection: Designed with thermal dissipation features, it ensures reliable operation under varying load conditions.
6. Compact Package: Available in standard DIP and surface-mount packages for space-efficient designs.
These features make the ULN2068B ideal for applications in motor drives, relay drivers, and other inductive load control scenarios.

Package

The ULN2068B is typically offered in a 20-pin DIP (Dual In-line Package) configuration. It may also be available in other package types such as surface mount options, depending on the manufacturer.

Pinout

The ULN2068B is a high-voltage, high-current Darlington transistor array with a total of 18 pins. It features eight channels of output, each capable of driving a load with significant current and voltage. The pin configuration includes:
1. Input Pins (1-8): These receive control signals to activate the corresponding output channels.
2. Output Pins (9-16): These are connected to the load and provide the Darlington output, allowing for high current drive.
3. Common Pin (17): This pin connects to the positive power supply for the outputs.
4. Ground Pin (18): This pin connects to the common ground for the device.
The ULN2068B is typically used in applications like relay driving, lamp driving, and as a general-purpose interface for microcontrollers to control high-power loads. Its ability to handle multiple outputs makes it suitable for driving multiple devices simultaneously.

Manufacturer

The ULN2068B is manufactured by Texas Instruments, a prominent American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is well-known for its innovations in analog and digital signal processing, microcontrollers, and embedded systems, serving a wide range of industries including automotive, industrial, consumer electronics, and communication. Texas Instruments is recognized for its commitment to research and development, producing reliable and high-performance electronic components.

Application

The ULN2068B is a high-voltage, high-current Darlington transistor array used in various applications, including driving relays, solenoids, and motors. It is suitable for interfacing with logic-level signals to control high-power loads in automation systems, industrial control, automotive systems, and home appliances. Its integration simplifies circuit design, enhances reliability, and reduces component count in switching applications.

Equivalent

The ULN2068B is a quad high-voltage, high-current Darlington transistor array. Equivalent products include the ULN2003, ULN2004, ULN2008, and ULN2803, which are also Darlington arrays but may have different configurations or number of channels. For similar applications, consider the TC4420 or other logic-level gate drivers, depending on specific requirements. Always verify pin compatibility and specifications for your application.

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