Overview
The ULN2004ADRE4, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This integrated circuit is designed to serve as a power switch/driver with NPN output transistors, making it suitable for a variety of applications requiring high current and voltage handling capabilities.
The device is part of the ULN2004A family, which is known for its robust performance and versatility in driving inductive and resistive loads. It is particularly useful in scenarios where multiple channels of high-current switching are required.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Collector-Emitter Voltage (VCE) | 50 | V | ||
| Input Voltage (VI) | 15 | V | ||
| Collector Current (IC) per Channel | 500 | mA | ||
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.9 | 1.1 | 1.6 | V |
| Propagation Delay Time (tPLH, tPHL) | 0.25 | 1 | μs | |
| Operating Temperature Range | -20 | 70 | °C |
Key Features
- High-Voltage and High-Current Capability: The ULN2004ADRE4 can handle up to 50V collector-emitter voltage and 500mA collector current per channel, making it suitable for driving high-power loads.
- Darlington Transistor Array: The device consists of seven Darlington pairs, each with a 10.5-kΩ series base resistor, allowing direct operation from CMOS devices with supply voltages between 6V and 15V.
- Multiple Package Options: Available in various packages such as SOIC, PDIP, SO, and TSSOP, providing flexibility in design and layout.
- Common Emitter and Common Cathode Nodes: Features a common emitter shared by all channels and a common cathode node for flyback diodes, which is essential for inductive load applications.
- Low Propagation Delay: Offers fast switching times with propagation delay times of 0.25 to 1 μs, ensuring efficient operation in high-speed applications.
Applications
- Relay Drivers: Suitable for driving relays in various control systems.
- Hammer Drivers: Used in applications requiring high current pulses, such as in solenoid drivers.
- Lamp Drivers: Can drive LED and gas discharge lamps efficiently.
- Display Drivers: Applicable in display systems that require high current and voltage handling.
- Line Drivers and Logic Buffers: Useful in communication systems and logic circuits that need high current and voltage capabilities.
Q & A
- What is the maximum collector-emitter voltage of the ULN2004ADRE4?
The maximum collector-emitter voltage is 50V.
- What is the typical collector current per channel for the ULN2004ADRE4?
The typical collector current per channel is 500mA.
- What are the package options available for the ULN2004ADRE4?
The device is available in SOIC, PDIP, SO, and TSSOP packages.
- What is the purpose of the common cathode node in the ULN2004ADRE4?
The common cathode node is required for flyback diodes in inductive load applications.
- Can the ULN2004ADRE4 be used with CMOS devices?
- What are some common applications of the ULN2004ADRE4?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, and line drivers/logic buffers.
- What is the operating temperature range of the ULN2004ADRE4?
The operating temperature range is -20°C to 70°C.
- What is the propagation delay time of the ULN2004ADRE4?
The propagation delay time is between 0.25 and 1 μs.
- Is the ULN2004ADRE4 RoHS compliant?
- How many channels does the ULN2004ADRE4 have?
The device has seven Darlington pairs or channels.
