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ULN2803A/ from ST,ST Microelectronics

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ULN2803A/

Manufacturer: ST

High-Voltage, High-Current Darlington Arrays

Partnumber Manufacturer Quantity Availability
ULN2803A/,ULN2803A ST 3520 In Stock

Description and Introduction

High-Voltage, High-Current Darlington Arrays The ULN2803A 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):** 5 V TTL/CMOS  
- **Number of Channels:** 8  
- **Package Type:** DIP-18, SO-18  
- **Clamp Diodes:** Included for inductive load protection  
- **Power Dissipation:** 2.25 W (total)  
- **Operating Temperature Range:** -20°C to +85°C  

### **Descriptions:**  
The ULN2803A is an 8-channel Darlington transistor array designed for interfacing between low-level logic circuits and high-power loads. It is commonly used for driving relays, lamps, solenoids, and stepper motors. Each channel includes freewheeling diodes for inductive load protection.  

### **Features:**  
- **High-Voltage Outputs:** Up to 50 V  
- **High-Current Capability:** 500 mA per channel  
- **Inputs Compatible with TTL/CMOS Logic**  
- **Integrated Suppression Diodes for Inductive Loads**  
- **Wide Operating Temperature Range**  
- **Cascadable for Higher Current Applications**  

This device is widely used in industrial, automotive, and consumer applications requiring robust switching capabilities.

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