HT0440LG-G

The Supertex HT0440 is a dual, high voltage, isolated MOSFET driver utilizing Supertex’s proprietary HVCMOS ® technology. It is designed to drive discrete MOSFETs configured as bidirectional or unidirectional switches. It can drive N-channel MOSFETs as high-side switches up to 400V.

The HT0440 generates two independent DC isolated voltages to the outputs, VOUTA and VOUTB when logic inputs A and B are at logic high. The internal clock of the HT0440 can be disabled by applying an external clock signal to the CLK pin. This allows the power dissipation and AC characteristics to be tailored to meet specific needs. The CLK pin should be connected to ground when not in use. The HT0440 does not require any external power supplies, the internal supply voltage is supplied by either of the two logic inputs, A or B, when they are at logic high.

Key electrical specifications include ±400V input to output isolation and ±700V isolation between outputs. The device operates with logic input voltages between 0.5V and 7.0V, and requires a supply voltage between 3.15V and 5.5V. The operating temperature range is -40°C to +125°C (TJ).

This component is available in an 8-SOIC package and is designed for surface mount applications. It is suitable for use in telecommunications, modems, solid state relays, high side switches, high end audio switches, avionics, and ATE.