Overview
The onsemi NUD3112DMT1G is an integrated relay and inductive load driver designed to switch inductive loads such as relays, solenoids, incandescent lamps, and small DC motors. This device integrates all necessary components, including a MOSFET switch, ESD protection, and Zener clamps, eliminating the need for a free-wheeling diode. It accepts logic level inputs, making it compatible with a wide range of devices including logic gates, inverters, and microcontrollers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain to Source Voltage (VDSS) | 14 | Vdc |
| Gate to Source Voltage (VGS) | 6 | Vdc |
| Drain Current (ID) | 500 | mA |
| Junction Temperature (TJ) | 150 | °C |
| Operating Ambient Temperature (TA) | -40 to 85 | °C |
| Storage Temperature Range (Tstg) | -65 to +150 | °C |
| Total Power Dissipation (PD) | Derating Above 25°C: 1.8 mW/°C | mW/°C |
| Thermal Resistance Junction-to-Ambient (RJA) | 329 | °C/W |
| ESD Human Body Model (HBM) | 2000 | V |
| Drain to Source On-Resistance (RDS(on)) | 0.9 - 1.3 | Ω |
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 type of loads can the NUD3112DMT1G switch?
The NUD3112DMT1G can switch inductive loads such as relays, solenoids, incandescent lamps, and small DC motors.
- Does the NUD3112DMT1G require a free-wheeling diode?
No, the device has an internal Zener clamp that eliminates the need for a free-wheeling diode.
- What is the maximum drain current of the NUD3112DMT1G?
The maximum drain current is 500 mA.
- What is the operating ambient temperature range of the NUD3112DMT1G?
The operating ambient temperature range is -40 to 85 °C.
- Is the NUD3112DMT1G RoHS compliant?
- What are the typical applications of the NUD3112DMT1G?
Typical applications include telecom, computers and office equipment, consumer electronics, and industrial devices.
- What is the maximum power dissipation of the NUD3112DMT1G?
The total power dissipation derates above 25°C at 1.8 mW/°C.
- What is the thermal resistance junction-to-ambient of the NUD3112DMT1G?
The thermal resistance junction-to-ambient is 329 °C/W.
- What is the ESD protection level of the NUD3112DMT1G?
The device has an ESD protection level of 2000 V according to the Human Body Model (HBM).
- Is the NUD3112DMT1G still in production?
No, the NUD3112DMT1G is obsolete and no longer manufactured.
