ZHCSL09C April 2020 – December 2020 LM7480-Q1
PRODUCTION DATA
The VDS rating of the MOSFET Q1 should be minimum 200 V for a output cutoff design where output can reach 0 V while the load dump transient is present and should be a minimum of 164.5 V when output is clamped to 37 V (±1.5 V). The VGS rating is based on HGATE-OUT maximum voltage of 15 V. A 20-V VGS rated MOSFET is recommended.
Power dissipation on MOSFET Q1 on a design where output is clamped is critical and SOA characteristics of the MOSFET need to be considered with sufficient design margin for reliable operation.