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ULN2803 from ST,ST Microelectronics

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ULN2803

Manufacturer: ST

OCTAL PERIPHERAL DRIVER ARRAYS

Partnumber Manufacturer Quantity Availability
ULN2803 ST 6000 In Stock

Description and Introduction

OCTAL PERIPHERAL DRIVER ARRAYS The ULN2803 is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics.  

### **Specifications:**  
- **Output Current per Channel:** 500 mA (max)  
- **Output Voltage:** 50 V (max)  
- **Input Voltage (Logic Compatible):** 3.3 V to 5 V  
- **Number of Channels:** 8  
- **Configuration:** Common-cathode clamp diodes for inductive loads  
- **Package:** DIP-18, SO-18  
- **Power Dissipation:** 2.25 W (total)  

### **Descriptions:**  
The ULN2803 is an 8-channel Darlington driver IC designed for interfacing low-voltage logic circuits (such as microcontrollers) with high-power loads like relays, motors, and lamps. It includes built-in suppression diodes for inductive load protection.  

### **Features:**  
- **High-Voltage Outputs:** Up to 50 V  
- **High-Current Sinking Capability:** 500 mA per channel  
- **Inputs Compatible with TTL and CMOS Logic**  
- **Built-in Clamp Diodes for Inductive Loads**  
- **Wide Operating Temperature Range:** -20°C to +85°C  
- **Relay Driver Applications**  

This IC is commonly used in industrial control systems, automation, and embedded applications requiring multiple high-power switching channels.

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