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. The device can be driven by logic level inputs, allowing it to be controlled by 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 |
| Single Pulse Drain-to-Source Avalanche Energy (Ez) | 50 | mJ |
| Junction Temperature (TJ) | -40 to 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 |
| Gate Threshold Voltage (VGS(th)) | 0.8 - 1.4 | 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 clamp eliminates the need for a free-wheeling diode and 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 without the need for a free-wheeling diode.
- What is the maximum drain to source voltage (VDSS) of the NUD3112LT1G? The maximum VDSS is 14 Vdc.
- What is the gate to source voltage (VGS) range for the NUD3112LT1G? The VGS range is up to 6 Vdc.
- What is the maximum continuous drain current (ID) for the NUD3112LT1G? The maximum ID is 500 mA.
- What is the junction temperature range for the NUD3112LT1G? The junction temperature range is -40 to 150°C.
- Is the NUD3112LT1G RoHS compliant? Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What types of applications can the NUD3112LT1G be used in? It can be used in telecom, computers and office equipment, consumer electronics, and industrial applications.
- How does the internal Zener clamp benefit the system? The internal Zener clamp eliminates the need for a free-wheeling diode and routes induced current to ground, resulting in quieter system operation.
- What is the thermal resistance junction-to-ambient (RJA) of the NUD3112LT1G? The RJA is 329°C/W.
- Is the NUD3112LT1G scheduled for obsolescence? Yes, it is scheduled for obsolescence and will be discontinued by the manufacturer.
