Overview
The ULN2004AN is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes designed for switching inductive loads. The ULN2004AN is particularly useful for applications requiring robust and reliable switching capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Enclosure | DIP-16 | |
| Maximum voltage between collector and emitter (Vceo) | 50 | V |
| Assembly | THT | |
| Rated current | 500 mA | |
| Saturation voltage | 1.1 V | |
| Continuous collector current | 500 mA | |
| Peak collector current | 600 mA | |
| Operating ambient temperature range | -40 to 85 | °C |
| Storage temperature range | -55 to 150 | °C |
| Junction temperature | 150 | °C |
| Electrostatic discharge rating - HBM | 2 kV |
Key Features
- Seven NPN Darlington pairs per package
- Output current 500 mA per driver (600 mA peak)
- Output voltage 50 V
- Integrated suppression diodes for inductive load driving
- Outputs can be paralleled for higher current capability
- TTL/CMOS/PMOS/DTL compatible inputs
- Input pins placed opposite to output pins to simplify layout
- Common-cathode clamp diodes for switching inductive loads
Applications
- Relay drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Stepper and DC brushed motor drivers
- Solenoids, DC motors, thermal printheads, and high-power buffers
- Hammer drivers and line drivers
- Logic buffers
Q & A
- What is the ULN2004AN used for?
The ULN2004AN is used for high-voltage, high-current applications such as relay drivers, lamp drivers, display drivers, and motor drivers.
- How many Darlington pairs does the ULN2004AN contain?
The ULN2004AN contains seven NPN Darlington pairs.
- What is the maximum output voltage of the ULN2004AN?
The maximum output voltage is 50 V.
- What is the rated current per driver in the ULN2004AN?
The rated current per driver is 500 mA, with a peak current of 600 mA.
- Are the inputs of the ULN2004AN compatible with various logic families?
- What type of diodes are integrated into the ULN2004AN for inductive load driving?
The ULN2004AN includes common-cathode clamp diodes for switching inductive loads.
- Can the outputs of the ULN2004AN be paralleled for higher current capability?
- What is the operating ambient temperature range of the ULN2004AN?
The operating ambient temperature range is -40 to 85°C.
- What is the storage temperature range of the ULN2004AN?
The storage temperature range is -55 to 150°C.
- What is the junction temperature limit of the ULN2004AN?
The junction temperature limit is 150°C.
