HT0440LG-G

Isolators - Gate Drivers Overview

The HT0440LG-G is a dual high-voltage isolated MOSFET driver utilizing HVCMOS technology, designed for discrete MOSFETs in bidirectional or half-bridge configurations. It features ±400V input-to-output isolation and ±700V inter-output isolation without requiring external voltage supplies. The device operates within a supply voltage range of 3.15 V to 5.5 V, with a maximum operating supply current of 2 mA. It provides an output voltage of 10 V and supports SMD/SMT mounting in an 8-pin SOIC package. The component functions reliably across an extended temperature range from -40°C to +85°C.

Isolators - Gate Drivers Feature Summary

• Dual-channel high-voltage isolated gate driving capability using HVCMOS technology
• Integrated isolation eliminating the need for external bias supplies
• High input impedance suitable for low-power control interfaces

Isolators - Gate Drivers Applications

• Driving discrete MOSFETs in bidirectional power switches
• Half-bridge and full-bridge converter topologies
• Isolated gate drive stages in high-voltage power electronics

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'LG' confirms the SOIC-8 tape-and-reel packaging variant. Confirm that the ±400V isolation rating aligns with your system's transient voltage requirements. Ensure the operating temperature range up to +85°C meets your thermal design constraints. Cross-reference the datasheet revision date to ensure compatibility with your ECAD models.

Isolators - Gate Drivers Selection Notes

Select this component when high-voltage isolation is required without external bootstrap or isolated supply circuits. The dual-channel architecture simplifies layout for half-bridge applications. Consider the 2 mA input current requirement for logic interface compatibility. Verify that the SOIC-8 footprint matches your PCB design rules and thermal dissipation needs.

Isolators - Gate Drivers Part Context

This part belongs to Microchip's HT0440 family of isolated gate drivers. It complements other variants like the HT0440K6-G by offering specific packaging and isolation characteristics. The series targets industrial motor drives and renewable energy inverters where compact, reliable high-side switching is critical.

Isolators - Gate Drivers Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the HT0440K6-G, ensuring identical isolation ratings and package dimensions. Verify that any substitute maintains the ±400V isolation specification and compatible supply voltage range.