Overview
The ULN2001AD, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device is part of the ULN2001A series and is designed to provide a versatile solution for driving a wide range of loads. It features seven open collector Darlington pairs with common emitters, making it suitable for various applications requiring high current and voltage handling capabilities.
The ULN2001AD is available in both 16-pin plastic DIP and SO-16 packages, ensuring flexibility in design and layout. It is compatible with multiple logic families, including TTL, CMOS, PMOS, and DTL, making it a robust choice for diverse electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VCE) | 50 | V |
| Input Voltage (VI) | 30 | V |
| Continuous Collector Current (IC) | 500 mA | mA |
| Peak Collector Current | 600 mA | mA |
| Operating Ambient Temperature Range | –20 to 85 | °C |
| Storage Temperature Range | –55 to 150 | °C |
| Junction Temperature | 150 | °C |
| Turn-on Delay Time (tPLH) | 0.25 to 1 | μs |
| Turn-off Delay Time (tPHL) | 0.25 to 1 | μs |
| Input Capacitance (Ci) | 15 to 25 | pF |
Key Features
- Seven high-voltage, high-current Darlington transistor pairs with common emitters.
- Each channel rated at 500 mA continuous collector current and 600 mA peak collector current.
- Integrated suppression diodes for inductive load driving.
- Inputs pinned opposite outputs to simplify board layout.
- Compatible with TTL, CMOS, PMOS, and DTL logic families.
- Outputs can be paralleled for higher current capability.
- Available in 16-pin plastic DIP and SO-16 packages.
- Operating temperature range from –20°C to 85°C.
Applications
- Driving solenoids, relays, and DC motors.
- Controlling LED displays and filament lamps.
- Thermal print heads and high power buffers.
- Line drivers and logic buffers.
- Hammer drivers and other high-current applications.
Q & A
- What is the ULN2001AD used for?
The ULN2001AD is used for driving high-voltage, high-current loads such as solenoids, relays, DC motors, LED displays, and filament lamps.
- What are the key specifications of the ULN2001AD?
The key specifications include an output voltage of 50V, continuous collector current of 500mA, peak collector current of 600mA, and an operating temperature range of –20°C to 85°C.
- What types of packages are available for the ULN2001AD?
The ULN2001AD is available in both 16-pin plastic DIP and SO-16 packages.
- Is the ULN2001AD compatible with multiple logic families?
- What is the purpose of the integrated suppression diodes in the ULN2001AD?
The integrated suppression diodes are for inductive load driving, helping to protect the device from voltage spikes.
- Can the outputs of the ULN2001AD be paralleled for higher current capability?
- What is the junction temperature limit for the ULN2001AD?
The junction temperature limit is 150°C.
- What are the typical turn-on and turn-off delay times for the ULN2001AD?
The typical turn-on and turn-off delay times are 0.25 to 1 μs each.
- What is the input capacitance of the ULN2001AD?
The input capacitance is 15 to 25 pF.
- How does the ULN2001AD simplify board layout?
The inputs are pinned opposite the outputs, which simplifies the board layout.
