Overview
The ULN2075B is a quad Darlington switch produced by STMicroelectronics. It is designed to interface logic circuits with high current, high voltage loads. This device features four NPN Darlington switches, each capable of delivering up to 1.5 A of output current. The ULN2075B is particularly suited for applications requiring isolated Darlington pinouts, such as emitter follower configurations. It is compatible with popular 5 V logic families, making it versatile for various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VCEX) | 80 | V |
| Output Sustaining Voltage (VCE(sus)) | 50 | V |
| Output Current (IO) | 1.75 | A |
| Input Voltage (VI) | 60 | V |
| Input Current (II) | 25 | mA |
| Operating Ambient Temperature Range (Tamb) | -20 to 85 | °C |
| Storage Temperature (Tstg) | -55 to 150 | °C |
| Collector-Emitter Saturation Voltage (VCE(sat)) at 1.5 A | 1.5 | V |
| Input Current (II(ON)) at VI = 2.4 V | 1.4 | mA |
| Input Voltage (VI(ON)) at VCE = 2 V, IC = 1 A | 2 | V |
Key Features
- Output current up to 1.5 A for each Darlington switch
- Minimum breakdown voltage of 80 V and sustaining voltage of at least 50 V
- Isolated Darlington pinouts, suitable for emitter follower configurations
- Compatible with popular 5 V logic families
- Integral suppression diodes for inductive loads (not applicable to ULN2075B)
- Pre-driver stage in some versions to reduce loading on control logic (not applicable to ULN2075B)
- PowerDIP-16 package
Applications
- Interface logic to high current, high voltage loads
- Emitter follower configurations
- Inductive load control (with integral suppression diodes in other versions)
- Relay and solenoid drivers
- LED display drivers
- Stepper motor drivers
Q & A
- What is the maximum output current of the ULN2075B?
The maximum output current of the ULN2075B is 1.5 A for each Darlington switch.
- What is the minimum breakdown voltage of the ULN2075B?
The minimum breakdown voltage of the ULN2075B is 80 V.
- Is the ULN2075B compatible with 5 V logic families?
Yes, the ULN2075B is compatible with popular 5 V logic families.
- Does the ULN2075B have integral suppression diodes?
No, the ULN2075B does not have integral suppression diodes; this feature is available in other versions like ULN2065B, ULN2067B, and ULN2069B.
- What is the operating ambient temperature range of the ULN2075B?
The operating ambient temperature range of the ULN2075B is -20 to 85 °C.
- What package type is the ULN2075B available in?
The ULN2075B is available in a PowerDIP-16 package.
- Can the ULN2075B be used for inductive load control?
While the ULN2075B itself does not have integral suppression diodes, it can still be used for inductive load control with external suppression components.
- What is the collector-emitter saturation voltage of the ULN2075B at 1.5 A?
The collector-emitter saturation voltage of the ULN2075B at 1.5 A is approximately 1.5 V.
- How can the thermal performance of the ULN2075B be improved?
The thermal performance can be improved by soldering the GND pins to a suitable copper area of the printed circuit board or to an external heatsink.
- What is the storage temperature range for the ULN2075B?
The storage temperature range for the ULN2075B is -55 to 150 °C.
