Overview
The NUD3112LT1G is an integrated relay and inductive load driver produced by onsemi. This device is designed to switch inductive loads such as relays, solenoids, incandescent lamps, and small DC motors without the need for a free-wheeling diode. It integrates a MOSFET switch, ESD protection, and Zener clamps, making it a robust and efficient solution for various applications.
Key Specifications
| Symbol | Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VDSS | Drain to Source Voltage – Continuous | - | - | 14 | Vdc |
| VGS | Gate to Source Voltage – Continuous | - | - | 6 | Vdc |
| ID | Drain Current – Continuous | - | - | 500 | mA |
| Ez | Single Pulse Drain−to−Source Avalanche Energy (TJinitial = 25°C) | - | - | 50 | mJ |
| TJ | Junction Temperature | - | - | 150 | °C |
| TA | Operating Ambient Temperature | -40 | - | 85 | °C |
| Tstg | Storage Temperature Range | -65 | - | 150 | °C |
| PD | Total Power Dissipation (Note 1) | - | - | Derating Above 25°C: 1.8 mW/°C | - |
| RJA | Thermal Resistance Junction−to−Ambient (Note 1) | - | - | 329 | °C/W |
| ESD | Human Body Model (HBM) According to EIA/JESD22/A114 | - | - | 2000 | V |
Key Features
- Provides a robust driver interface between DC relay coil and sensitive logic circuits.
- Optimized to switch relays of 12 V rail.
- Capable of driving relay coils rated up to 6.0 W at 12 V.
- Internal Zener eliminates the need for a free-wheeling diode.
- Internal Zener clamp routes induced current to ground for quieter system operation.
- Low VDS(ON) reduces system current drain.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Telecom: Line Cards, Modems, Answering Machines, FAX.
- Computers and Office: Photocopiers, Printers, Desktop Computers.
- Consumer: TVs and VCRs, Stereo Receivers, CD Players, Cassette Recorders.
- Industrial: Small Appliances, Security Systems, Automated Test Equipment, Garage Door Openers.
Q & A
- What is the primary function of the NUD3112LT1G?
The NUD3112LT1G is designed to switch inductive loads such as relays, solenoids, incandescent lamps, and small DC motors.
- Does the NUD3112LT1G require a free-wheeling diode?
No, the device integrates an internal Zener clamp that eliminates the need for a free-wheeling diode.
- What is the maximum drain current the NUD3112LT1G can handle?
The maximum drain current is 500 mA.
- What is the operating ambient temperature range for the NUD3112LT1G?
The operating ambient temperature range is from -40°C to 85°C.
- Is the NUD3112LT1G RoHS compliant?
- What types of applications is the NUD3112LT1G typically used in?
The device is used in telecom, computers and office equipment, consumer electronics, and industrial applications.
- What is the maximum power dissipation for the NUD3112LT1G?
The total power dissipation is derated above 25°C at 1.8 mW/°C.
- What is the thermal resistance junction-to-ambient for the NUD3112LT1G?
The thermal resistance junction-to-ambient is 329 °C/W.
- What is the ESD protection level of the NUD3112LT1G according to the Human Body Model (HBM)?
The ESD protection level is 2000 V according to EIA/JESD22/A114.
- Can the NUD3112LT1G be driven by logic gates, inverters, and microcontrollers?
