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ULN2803CDWR

Name: ULN2803CDWR
Rating: 4.8 (15 reviews)

+物料清單

50-V, EIGHT-CHANNEL DARLINGTON A

製造商德州儀器
製造商部分 #ULN2803CDWR
數據表 ULN2803CDWR DataSheet
包裹 SOIC (DW)-20
有存貨4407

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正品保證

規格

屬性	價值
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
TransistorType	8 NPN Darlington
Current-Collector(Ic)(Max)	500mA
Voltage-CollectorEmitterBreakdown(Max)	50V
VceSaturation(Max)@IbIc	1.6V @ 500µA, 350mA
Current-CollectorCutoff(Max)	50µA
OperatingTemperature	-65°C ~ 150°C (TJ)
MountingType	Surface Mount
Package/Case	20-SOIC (0.295, 7.50mm Width)

概述

Description

The ULN2803CDWR is an 8-channel Darlington transistor array IC designed for driving high-current loads. It features:
- 8 NPN Darlington pairs (500mA per channel, 50V max)
- Common-cathode clamp diodes for inductive load protection
- TTL/CMOS-compatible inputs (5V logic)
- Wide voltage range (up to 50V output)
Commonly used to drive relays, motors, LEDs, and solenoids, it simplifies interfacing low-power logic with high-current devices. The SOIC-18 (DW) package makes it suitable for space-constrained designs.
Key advantages include high current gain, built-in protection diodes, and ease of use with microcontrollers.
*Example applications:* Relay drivers, stepper motor control, and lamp/display drivers.
For more details, refer to the datasheet.

Features

The ULN2803CDWR is an 8-channel Darlington transistor array with the following key features:
- High-Voltage/Current Drive: Supports up to 50V and 500mA per channel (sink capability).
- Darlington Pairs: Each channel consists of two NPN transistors for high gain.
- Integrated Suppression Diodes: Built-in clamp diodes for inductive load protection.
- TTL/CMOS Compatible Inputs: Works with 5V logic (3V min. for TTL).
- Open-Collector Outputs: Allows flexible load connections.
- Wide Operating Range: 10V–50V supply voltage.
- Thermal Shutdown: Protects against overheating.
- Package: SOIC-18 (surface-mount).
Ideal for driving relays, LEDs, stepper motors, and other high-current loads.

Manufacturer

The ULN2803CDWR is manufactured by Texas Instruments (TI), a leading American semiconductor company. TI specializes in designing and producing analog and embedded processing chips for various industries, including automotive, industrial, and consumer electronics. Known for innovation and reliability, TI is a major player in the global electronics market.

Application

The ULN2803CDWR is a Darlington transistor array IC commonly used for:
1. Relay and Solenoid Driving – Controls high-current inductive loads.
2. Stepper Motor Control – Acts as a driver for unipolar stepper motors.
3. LED Displays – Drives multiple LEDs or 7-segment displays.
4. Logic Buffering – Interfaces low-power digital circuits with higher-current peripherals.
5. Industrial Automation – Used in PLCs and control systems for switching loads.
Its high current-sinking capability (500mA per channel) and built-in flyback diodes make it ideal for inductive load applications.

Package

The ULN2803CDWR is a SOIC-18 (Small Outline Integrated Circuit) package. It has 18 pins and a wide body design, suitable for surface mounting (SMD). The "DWR" suffix indicates a tape-and-reel packaging for automated assembly. The package dimensions are approximately 11.55mm x 7.5mm.