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ULN2805A/ from ST,ST Microelectronics

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ULN2805A/

Manufacturer: ST

EIGHT DARLINGTON ARRAYS

Partnumber Manufacturer Quantity Availability
ULN2805A/,ULN2805A ST 10 In Stock

Description and Introduction

EIGHT DARLINGTON ARRAYS The ULN2805A is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics (ST).  

### **Specifications:**  
- **Configuration:** 8-channel Darlington transistor array  
- **Output Voltage:** 50V (max)  
- **Output Current:** 500mA per channel (max)  
- **Input Voltage Compatibility:** TTL, CMOS, PMOS  
- **Input Current:** 2.5mA (max)  
- **Power Dissipation:** 2.25W (max)  
- **Operating Temperature Range:** -20°C to +85°C  
- **Package Type:** DIP-18, SO-18  

### **Descriptions:**  
- Designed for interfacing between low-level logic circuits and high-power loads.  
- Each channel consists of a Darlington pair with common-emitter outputs.  
- Includes integral suppression diodes for inductive load switching.  

### **Features:**  
- **High-Voltage Outputs:** Up to 50V  
- **High-Current Capability:** 500mA per channel  
- **Integrated Clamp Diodes:** For inductive load protection  
- **Compatible with Various Logic Families:** TTL, CMOS, PMOS  
- **Wide Operating Temperature Range:** -20°C to +85°C  
- **Simplified Circuit Design:** Reduces external component count  

The ULN2805A is commonly used in applications such as relay drivers, lamp drivers, display drivers (LED, incandescent), and motor controllers.

Application Scenarios & Design Considerations

EIGHT DARLINGTON ARRAYS

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