ULN2065B Quad Darlington Switch 80V 1.5A PDIP-16
Designed to interface logic to a wide variety of high current, high voltage loads, these devices each contain four NPN Darlington switches delivering up to 1.5 A with a specified minimum breakdown of 50 V and a sustaining voltage of 35 V measured at 100 mA. Inputs of the ULN2065B are compatible with popular 5V logic families.
Features
- Output current to 1.5A for each Darlington.
- Minimum breakdown 80V.
- Sustaining voltage at least 35V.
- Integral suppression diodes.
- Versions compatible with all popular logic families.
PINOUT
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | K | Clamp diode common cathode (connect to the load supply/positive rail for inductive load suppression). |
| 2 | C | Collector (output) — switched connection to common emitter/ground when channel is ON. |
| 3 | B | Base input (logic control input for the corresponding Darlington channel). |
| 4 | GND | Common emitter / ground connection (tie to PCB ground and recommended heatsink copper area). |
| 5 | GND | Common emitter / ground connection. |
| 6 | B | Base input (logic control input for the corresponding Darlington channel). |
| 7 | C | Collector (output) — switched connection to common emitter/ground when channel is ON. |
| 8 | K | Clamp diode common cathode (same as pin 1, diode connection for inductive load suppression). |
| 9 | C | Collector (output) — switched connection to common emitter/ground when channel is ON. |
| 10 | NC | No connection (not internally used). |
| 11 | B | Base input (logic control input for the corresponding Darlington channel). |
| 12 | GND | Common emitter / ground connection. |
| 13 | GND | Common emitter / ground connection. |
| 14 | B | Base input (logic control input for the corresponding Darlington channel). |
| 15 | NC | No connection (not internally used). |
| 16 | C | Collector (output) — switched connection to common emitter/ground when channel is ON. |
Specifications
| Symbol | Parameter | Value | Unit |
|---|---|---|---|
| VCEX | Output voltage | 80 | V |
| VCE(SUS) | Output sustaining voltage | 50 | V |
| IO | Output current | 1.75 | A |
| VI | Input voltage | 15 | V |
| II | Input current | 25 | mA |
| VS | Supply voltage for ULN2068B | 10 | V |
| PTOT | Power dissipation at TPINS = 90 °C | 4.3 | W |
| Power dissipation at TAMB = 70 °C | 1 | ||
| TAMB | Operating ambient temperature range | -20 to 85 | °C |
| TSTG | Storage temperature | -55 to 150 | °C |
Applications
- Low-side switching of relays, solenoids, motors and stepper coils in industrial and hobby circuits.
- Driving lamps, LED arrays and indicator banks from microcontroller or logic outputs.
- Interfacing between 5V logic and higher-voltage actuators in automation and control panels.
- Relay and coil drivers in telecom, security and building-control systems.
- Prototyping and repair of legacy boards that use Darlington arrays for power switching.
Package Contents
- 1x ULN2065B Quad Darlington Switch 80V 1.5A PDIP-16.
Documents
| Datasheet | ULN2065B |
| CAD Files | Download |
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