LM46000: Behavior under some anbormal conditions

Oba

Genius 16000 points

Part Number: LM46000

Hello,

My customer is investigating LM46000 behavior in some abnormal cases.

When SYNC pin (#6) is open, what happens?

When AGND pin (#10) is open, what happens?

When both PGND pins (#15 and #16) are open, what happens?

When PAD(#17) is open, what happens?

Regards,

Oba

0 Daniel Li14 over 2 years ago

let me check with team whether we have PIN FMEA files , Thanks

0 Oba over 2 years ago in reply to Daniel Li14

Hello Daniel,

Have you checked PIN FMEA file?

Regards,
Oba

+1 Daniel Li14 over 2 years ago in reply to Oba

1. Sync PIN open , IC will switch at default frequency

2. AGND open , output could be abnormal as reference voltage is not fixed

3. PGND open, the output could be abnormal.

4. PAD open, the thermal dissipation will be poor which may trig OTP.

0 Oba over 2 years ago in reply to Daniel Li14

Hello Daniel,

The customer has an question.

>4. PAD open, the thermal dissipation will be poor which may trig OTP.

What is "OTP" in this case?

Regards,
Oba

+1 Daniel Li14 over 2 years ago in reply to Oba

OTP means over temperature protection

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