Overview
The onsemi MDC3105LT1G is a MOSFET gate driver designed for driving inductive loads such as relays, solenoids, incandescent lamps, and small DC motors. This device is integrated into a compact SOT-23 package, making it ideal for space-constrained applications. It is optimized to switch relays from a 3.0 V to 5.0 V rail and can drive relay coils rated up to 2.5 W at 5.0 V. The MDC3105LT1G is discontinued but remains relevant for existing designs and legacy systems.
Key Specifications
| Attribute | Value |
|---|---|
| Output Current | 500 mA (peak), 400 mA (continuous) |
| Supply Voltage | 6 V |
| Pin Count | 3 |
| Package Type | SOT-23 (TO-236) |
| Driver Type | MOSFET |
| Number of Outputs | 1 |
| Number of Drivers | 1 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to +85°C |
| Length | 2.9 mm |
| Width | 1.3 mm |
Key Features
- Provides a robust driver interface between DC relay coil and sensitive logic circuits.
- Optimized to switch relays from a 3.0 V to 5.0 V rail.
- Capable of driving relay coils rated up to 2.5 W at 5.0 V.
- Low input drive current and good back-to-front transient isolation.
- Internal Zener clamp eliminates the need for a free-wheeling diode and routes induced current to ground for quieter system operation.
Applications
The MDC3105LT1G is suitable for a variety of applications involving inductive loads, including:
- Relay drive circuits
- Solenoid control
- Incandescent lamp switching
- Small DC motor control
Q & A
- What is the output current capability of the MDC3105LT1G?
The MDC3105LT1G can handle a peak output current of 500 mA and a continuous output current of 400 mA.
- What is the supply voltage range for the MDC3105LT1G?
The supply voltage for the MDC3105LT1G is 6 V.
- What package type is the MDC3105LT1G available in?
The MDC3105LT1G is available in a SOT-23 (TO-236) package.
- What is the operating temperature range of the MDC3105LT1G?
The operating temperature range is -40°C to +85°C.
- Does the MDC3105LT1G require a free-wheeling diode?
No, the MDC3105LT1G has an internal Zener clamp that eliminates the need for a free-wheeling diode.
- What types of loads can the MDC3105LT1G drive?
The MDC3105LT1G can drive inductive loads such as relays, solenoids, incandescent lamps, and small DC motors.
- Is the MDC3105LT1G suitable for high-power applications?
The MDC3105LT1G can drive relay coils rated up to 2.5 W at 5.0 V, but it is not designed for very high-power applications.
- What is the mounting type of the MDC3105LT1G?
The MDC3105LT1G is a surface mount device.
- Is the MDC3105LT1G still available for purchase?
The MDC3105LT1G is a discontinued product, but it may still be available from some distributors or for legacy system support.
- What are the dimensions of the MDC3105LT1G package?
The package dimensions are 2.9 mm in length and 1.3 mm in width.
