FOD3181V

Isolators - Gate Drivers Overview

The FOD3181V is a single-channel MOSFET gate driver optocoupler featuring a gallium aluminum arsenide (AlGaAs) LED optically coupled to a CMOS integrated circuit with a power stage. The output stage utilizes PMOS pull-up and NMOS pull-down transistors to deliver a minimum peak output current of 0.5A. It operates within a temperature range of -20°C to +85°C and provides 5000 Vrms isolation voltage. The device exhibits a maximum propagation delay of 500ns, making it suitable for high-frequency applications.

Isolators - Gate Drivers Feature Summary

• Integrates AlGaAs LED with CMOS IC and power stage for high-speed switching
• Provides robust 5000 Vrms insulation voltage for safety isolation
• Delivers 0.5A minimum peak output current for direct MOSFET driving
• Compatible with 260°C reflow processes for lead-free solder compliance

Isolators - Gate Drivers Applications

• High frequency driving of MOSFETs in Plasma Display Panels (PDPs)
• Motor control inverter applications
• High performance DC/DC converters

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'TV' or 'V' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Confirm RoHS compliance status and lead-free soldering requirements with the supplier. Ensure the operating temperature range meets the specific environmental constraints of the target application before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this component when a high-speed gate driver with moderate current capability is required. The 0.5A peak output is sufficient for many medium-power MOSFETs. Consider the 500ns propagation delay for timing-sensitive circuits. Verify that the 8-pin DIP package fits the available PCB space and that the 5000V isolation rating matches the system's electrical safety requirements.

Isolators - Gate Drivers Part Context

This part belongs to the FOD318x series of high-speed MOSFET gate driver optocouplers manufactured by Fairchild Semiconductor (now onsemi). The series includes variants with different output current capabilities, such as the 1.5A FOD3181V and the 3A FOD3184V. These devices are designed to replace traditional transformer-based gate drivers in compact, high-reliability power electronics designs.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes include the FOD3181 (standard version) and FOD3181V from onsemi. Cross-reference pinouts carefully as suffixes may indicate packaging or compliance differences rather than functional changes. Verify that replacement parts maintain the same 0.5A output current and 500ns propagation delay specifications.