Overview
The ULN2069B is a high-voltage, high-current Darlington transistor array produced by Allegro MicroSystems. This component is designed to interface between low-level logic and a variety of high-current, high-voltage peripheral loads. It features four NPN Darlington switches, each capable of delivering up to 1.5 A with a minimum breakdown voltage of 80 V and a sustaining voltage of 50 V at 100 mA. The ULN2069B is particularly useful in applications requiring high gain and low input-current loading due to its pre-driver stage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VCEX) | 80 | V |
| Output Sustaining Voltage (VCE(SUS)) | 50 | V |
| Output Current (IOUT) | 1.75 | A |
| Input Voltage (VIN) | 15 | V |
| Input Current (IB) | 25 | mA |
| Supply Voltage (VS) | 10 | V |
| Total Package Power Dissipation (PD) | See Graph | W |
| Operating Temperature Range (TA) | -20°C to +85°C | °C |
| Storage Temperature Range (TS) | -55°C to +150°C | °C |
Key Features
- TTL, DTL, MOS, CMOS compatible inputs
- Transient-protected outputs
- Capable of driving loads up to 480 watts
- Heat-sink contact tabs for improved thermal management
- Automotive capable
- Integral suppression diodes for inductive loads
- Pre-driver stage to reduce loading on the control logic
Applications
The ULN2069B is designed for a wide range of applications, including:
- Interface between low-level logic and peripheral loads such as relays, solenoids, DC and stepper motors
- Magnetic print hammers
- Multiplexed LED and incandescent displays
- Heaters and similar loads
Q & A
- What is the maximum output current of the ULN2069B?
The maximum output current of the ULN2069B is 1.75 A per Darlington switch.
- What is the minimum breakdown voltage of the ULN2069B?
The minimum breakdown voltage of the ULN2069B is 80 V.
- What types of logic are compatible with the ULN2069B inputs?
The inputs of the ULN2069B are compatible with TTL, DTL, MOS, and CMOS logic families.
- Does the ULN2069B have built-in suppression diodes for inductive loads?
Yes, the ULN2069B includes integral suppression diodes for inductive loads.
- What is the operating temperature range of the ULN2069B?
The operating temperature range of the ULN2069B is -20°C to +85°C.
- What is the storage temperature range of the ULN2069B?
The storage temperature range of the ULN2069B is -55°C to +150°C.
- Can the ULN2069B be used in automotive applications?
Yes, the ULN2069B is automotive capable.
- What is the total package power dissipation of the ULN2069B?
The total package power dissipation of the ULN2069B is specified in the datasheet graph.
- Does the ULN2069B have a pre-driver stage?
Yes, the ULN2069B includes a pre-driver stage to reduce loading on the control logic.
- What types of loads can the ULN2069B drive?
The ULN2069B can drive resistive loads up to 480 watts and inductive loads with sustaining voltages of 35 V and 50 V at 100 mA.
