Overview
The NUD3105DMT1G 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 | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Drain to Source Voltage (VDSS) | - | - | 6.0 | Vdc |
| Gate to Source Voltage (VGS) | - | - | 6.0 | Vdc |
| Drain Current (ID) | - | - | 500 | mA |
| Junction Temperature (TJ) | - | - | 150 | °C |
| Operating Ambient Temperature (TA) | -40 | - | 85 | °C |
| Gate Threshold Voltage (VGS(th)) | 0.8 | 1.2 | 1.4 | V |
| Drain to Source On-Resistance (RDS(on)) | 0.9 | 1.2 | 1.3 | Ω |
| Total Power Dissipation (PD) - SOT-23 | - | - | 225 | mW |
| Total Power Dissipation (PD) - SC-74 | - | - | 380 | mW |
| Thermal Resistance, Junction-to-Ambient (RθJA) - SOT-23 | - | - | 556 | °C/W |
| Thermal Resistance, Junction-to-Ambient (RθJA) - SC-74 | - | - | 329 | °C/W |
Key Features
- Provides a robust driver interface between DC relay coil and sensitive logic circuits.
- Optimized to switch relays from 3.0 V to 5.0 V rail.
- Capable of driving relay coils rated up to 2.5 W at 5.0 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.
- AEC-Q101 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
- Pb-free and halide-free packaging.
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.
- Automotive: 5.0 V driven relays, motor controls, power latches, lamp drivers.
Q & A
- What is the primary function of the NUD3105DMT1G?
The NUD3105DMT1G 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 are the typical operating voltage ranges for the NUD3105DMT1G?
The device is optimized to switch relays from 3.0 V to 5.0 V rail.
- What is the maximum power rating for the relay coils driven by the NUD3105DMT1G?
The device can drive relay coils rated up to 2.5 W at 5.0 V.
- Does the NUD3105DMT1G require a free-wheeling diode?
No, the internal Zener clamp eliminates the need for a free-wheeling diode.
- What are the thermal resistance values for the SOT-23 and SC-74 packages?
The thermal resistance for the SOT-23 package is 556 °C/W, and for the SC-74 package, it is 329 °C/W.
- Is the NUD3105DMT1G suitable for automotive applications?
- What are the typical applications of the NUD3105DMT1G?
The device is used in telecom, computers and office equipment, consumer electronics, industrial applications, and automotive systems.
- What is the maximum continuous drain current for the NUD3105DMT1G?
The maximum continuous drain current is 500 mA.
- What is the gate threshold voltage range for the NUD3105DMT1G?
The gate threshold voltage range is from 0.8 V to 1.4 V.
- Is the NUD3105DMT1G Pb-free and halide-free?
