The IRSF3021 Lamp and DC Motor Driver is a fully protected three terminal monolithic SMART POWER MOSFET that features current limiting, over-temperature protection, gate-to-source ESD protection and gate-to-drain clamp for over-voltage protection. The on-chip protection circuit limits the drain current in the on-state. The over-temperature circuitry turns off the POWER MOSFET when the junction temperature exceeds 165°C. The device restarts automatically once it has cooled down below the reset temperature. The IRSF3021 is specifically designed for driving loads that require overload protection and in-rush current control while operating in automotive and industrial environments. Targeted applications include resistive loads such as lamps or capacitive loads such as airbag squibs and DC motor drives.
The IRSF3021 is a fully protected three-terminal monolithic SMART POWER MOSFET designed for driving resistive loads like lamps and capacitive loads like airbag squibs, as well as DC motor drives. It features controlled slew rate to reduce EMI, over-temperature protection with auto-restart, linear current-limit protection, and active drain-to-source clamp for over-voltage protection.
| Power Dissipation | 30 W |
|---|---|
| Unclamped Single Pulse Inductive Energy | 200 mJ |
| Operating Junction Temperature Range | -40 to 175 °C |
| Drain to Source Clamp Voltage (Typical) | 50 V |
| Drain to Source On Resistance (Typical) | 200 mΩ |
| Current Limit (Typical) | 5.5 A |
| Over Temperature Shutdown Threshold | 165 °C |
The device is designed for driving loads requiring overload protection and in-rush current control, specifically cabin lighting, airbag systems, programmable logic controllers, and DC motor drives.
The over-temperature circuitry turns off the POWER MOSFET when the junction temperature exceeds 165°C and the device restarts automatically once it cools down below the reset temperature.
The maximum operating junction temperature is 175°C.