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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.

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.

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