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ULN2801A

EIGHT DARLINGTON ARRAYS

Partnumber Manufacturer Quantity Availability
ULN2801A 27 In Stock

Description and Introduction

EIGHT DARLINGTON ARRAYS The ULN2801A is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It is part of the ULN2800 series, which consists of eight NPN Darlington pairs with common emitters and integral suppression diodes for inductive loads.

### **Specifications:**
- **Number of Channels:** 8  
- **Output Current per Channel:** 500 mA (max)  
- **Peak Output Current (Single Channel):** 600 mA  
- **Output Voltage (Max):** 50 V  
- **Input Voltage (Max):** 30 V  
- **Input Compatibility:** TTL, CMOS, PMOS  
- **Power Dissipation:** 2.25 W  
- **Operating Temperature Range:** -20°C to +85°C  
- **Package Type:** 18-pin DIP (Dual In-line Package), SOIC  

### **Descriptions and Features:**
- **Darlington Pair Configuration:** Each channel consists of two NPN transistors in a Darlington configuration for high current gain.  
- **Integrated Suppression Diodes:** Includes built-in clamp diodes for switching inductive loads, protecting against back EMF.  
- **High-Voltage and High-Current Capability:** Suitable for driving relays, lamps, and other high-power loads.  
- **TTL/CMOS/PMOS Compatible Inputs:** Works with a variety of logic levels.  
- **Common Emitter Configuration:** Simplifies circuit design for sinking current.  
- **Wide Operating Temperature Range:** Suitable for industrial applications.  

The ULN2801A is commonly used in applications such as relay drivers, LED displays, motor controllers, and other high-power switching circuits.

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