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ULN2004

7-Channel High-Current Darlington Array

Partnumber Manufacturer Quantity Availability
ULN2004 4000 In Stock

Description and Introduction

7-Channel High-Current Darlington Array The ULN2004 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments and other semiconductor companies.  

### **Specifications:**  
- **Number of Channels:** 7 (7 Darlington pairs)  
- **Output Current per Channel:** 500 mA (max)  
- **Output Voltage (Max):** 50 V  
- **Input Voltage (Max):** 30 V  
- **Input Current (per channel):** 2.5 mA (typical)  
- **Power Dissipation:** 2.25 W (total package)  
- **Operating Temperature Range:** -20°C to +85°C  
- **Package Type:** PDIP-16, SOIC-16  

### **Descriptions:**  
- The ULN2004 is a monolithic Darlington transistor array designed for interfacing between low-level logic circuits and high-power loads.  
- It includes built-in suppression diodes for inductive load protection.  
- Commonly used for driving relays, stepper motors, LED displays, and other high-current peripherals.  

### **Features:**  
- **High-Voltage Outputs (50V max)**  
- **High-Current Darlington Sinks (500 mA per channel)**  
- **Inputs Compatible with TTL and 5V CMOS Logic**  
- **Suppression Diodes for Inductive Loads**  
- **Wide Operating Temperature Range**  
- **Relay Driver Applications**  

The ULN2004 is part of the ULN200x series, with the ULN2004 specifically optimized for higher voltage applications compared to the ULN2003.

Application Scenarios & Design Considerations

7-Channel High-Current Darlington Array
Partnumber Manufacturer Quantity Availability
ULN2004 ST 23000 In Stock

Description and Introduction

7-Channel High-Current Darlington Array The ULN2004 is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics.  

### **Specifications:**  
- **Configuration:** 7-channel Darlington array  
- **Output Current (per channel):** 500 mA (max)  
- **Output Voltage (max):** 50 V  
- **Input Voltage (max):** 30 V  
- **Power Dissipation:** 1 W (per package)  
- **Input Compatibility:** TTL, CMOS, PMOS  
- **Package Options:** PDIP-16, SO-16  

### **Descriptions:**  
- The ULN2004 is designed for interfacing between low-level logic and high-power loads.  
- Each channel consists of a Darlington pair with a common-emitter configuration.  
- Includes suppression diodes for inductive load switching.  

### **Features:**  
- **High-Voltage Outputs:** Up to 50 V  
- **High-Current Capability:** 500 mA per channel  
- **Integrated Clamp Diodes:** For inductive load protection  
- **Wide Range of Compatible Logic:** Works with 5V TTL, CMOS, and PMOS  
- **Thermal Shutdown Protection:** Prevents damage from overheating  

This device is commonly used in relay drivers, lamp drivers, display drivers (LED, incandescent), and motor controllers.

Application Scenarios & Design Considerations

7-Channel High-Current Darlington Array

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