LM3262: Effect on rubber magnets

Sadanori Kato

Part Number: LM3262

Hi,

Is there any effect on LM3262 if the rubber magnet (isotropy ferrite rubber magnet) approaches the upper surface of the package when mounting LM3262 with the mounter?
Please let me know if you have any concerns.

Best regards,
Kato

over 3 years ago

Excel Regidor over 3 years ago

TI__Mastermind 33231 points

Hi Kato,

I will get back to you on this matter on Monday, and I hope the schedule is alright with you.

Best regards,

Excel

Sadanori Kato over 3 years ago in reply to Excel Regidor

Guru 36530 points

Hi Excel-san,

Thank you for your response.

I am looking forward to getting the information from you next Monday.

Best regards,
Kato

Excel Regidor over 3 years ago in reply to Sadanori Kato

TI__Mastermind 33231 points

Hello Kato-san,

Did you or your customers encountered any issues when they place a rubber magnet near our device?

Best regards,

Excel

Excel Regidor over 3 years ago in reply to Excel Regidor

TI__Mastermind 33231 points

Hello Kato-san,

Additional question.

The rubber magnet came close to the IC during the mounting process to the customer board. Is that correct?

Best regards,

Excel

Sadanori Kato over 3 years ago in reply to Excel Regidor

Guru 36530 points

Hi Excel-san,

Yes, your understanding is correct.

Best regards,
Kato

Sadanori Kato over 3 years ago in reply to Sadanori Kato

Guru 36530 points

Hi Excel-san,

Our customer would like to know whether there are any concerns when the rubber magnet comes close to the IC during the mounting process to the customer board. So, he hasn't adapted it yet.

Best regards,
Kato

Excel Regidor over 3 years ago in reply to Sadanori Kato

TI__Mastermind 33231 points

Hi Kato-san,

Thanks for the clarification.

I will get back to you immediately.

Best regards,

Excel

Sadanori Kato over 3 years ago in reply to Excel Regidor

Guru 36530 points

Hi Excel-san,

Thank you for your quick response.

I am looking forward to hearing from you ASAP.

Best regards,
Kato

Excel Regidor over 3 years ago in reply to Sadanori Kato

TI__Mastermind 33231 points

Hi Kato-san,

We think there is no adverse effect in the device when placing it near the rubber magnet during the IC mounting process because the magnetic field is low.

It is expected that there would be a voltage induced if an electrical conductor (ex. a line on the PCB (GND, VIN, VOUT) connected to our device) is moved perpendicular through a magnetic field. Hence, there could be voltages induced and current flow. But since the speed of the device movement and the magnetic field are low, we do not expect any critical voltage/currents that would damage the device.

To be on the safe side, the customer needs to ensure that the device will not exceed the absolute max ratings as the IC moves through the magnetic field during the device assembly.

Best regards,

Excel

Sadanori Kato over 3 years ago in reply to Excel Regidor

Guru 36530 points

Hi Excel-san,

Thank you for the information.

I understand and will contact you if I get additional questions from our customer.

Best regards,
Kato

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LM3262: Effect on rubber magnets