LM7481-Q1: The design for the vehicle ignition signal

Leo Yang

Part Number: LM7481-Q1
Other Parts Discussed in Thread: LM74800-Q1, , LM74800EVM-CS

Tool/software:

Hi team,

Do we have any guide or reference for vehicle ignition signal connecting to LM74810QDRRRQ1?

Thanks,

Leo

0 Shiven Dhir over 1 year ago

Hi Leo,

What are the requirements for vehicle ignition signal?

We do have an EVM that can be tested according to your needs.

Regards,

Shiven Dhir

0 Yang wenchen over 1 year ago

Hi Shiven Dhir, Match the 12V battery to ISO 26262 standards and Load Dump 5astandards Thanks.

0 Yang wenchen over 1 year ago in reply to Yang wenchen

Hi Shiven Dhir,
Match the 12V battery to ISO 7637-2 standards and Load Dump 5astandards

0 Shiven Dhir over 1 year ago in reply to Yang wenchen

Hi Yang,

We have a reference schematic and an EVM in this configuration for load dump 5A.

LM7481-Q1 can be replaced with LM74800-Q1 with no BOM changes.

Regards,

Shiven Dhir

0 Yang wenchen over 1 year ago

Hi Shiven Dhir,

Thanks for you reply.

Based on the LM74800EVM-CS schematic, how can I design the ignition signal circuit in this EVM for vehicle control applications?

0 Shiven Dhir over 1 year ago in reply to Yang wenchen

Hi Yang,

The schematic is already optimized for your requirements.

"Match the 12V battery to ISO 7637-2 standards and Load Dump 5astandards"

Regards,

Shiven Dhir

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