TLV758P: 1. Can I connect PNC to GND on TLV75801PDRV? 2. Can I remain feedback loop resistors on TLV73311PQDRVRQ1?

Aaron Chen (FAE)

Part Number: TLV758P
Other Parts Discussed in Thread: TLV767

Hi Experts,

My customer were switching device, and encountered some question, kindly help me to figure out the solutions. Thank you.

1.
Since they would like to replace TLV76701DRV by TLV75801PDRV.

Can they connect DNC to GND on TLV75801PDRV?

Will it have any influences on TLV75801PDRV?

2.
Since they would like to replace TLV75801PDRV by TLV73311PQDRVRQ1.

Can they remain the feedback loop resistors(pin2) of TLV75801PDRV on TLV73311PQDRVRQ1?

Will it have any influences on TLV73311PQDRVRQ1?

Thank you

BR,

Aaron Chen

over 2 years ago

0 Srikanth Lolla Venkata over 2 years ago

TI__Genius 12040 points

Hello,

I am looking into this, I will get back to you by the end of the week.

Regards,

Srikanth

+1 Srikanth Lolla Venkata over 2 years ago in reply to Srikanth Lolla Venkata

TI__Genius 12040 points

Hi Aaron,

Please find below my responses:

(1) Regarding TLV767 & TLV758: Please note that the DNC pin of TLV758 is an active electrical node, and it should not be connected to GND or any biased voltage source. The DNC pin should always be left floating.

(2) Please note that TLV73311PQDRVRQ1 is a fixed output LDO. If the feedback resistors of TLV75801PDRV are used on TLV73311PQDRVRQ1, depending on their values, they would increase the load current consumption ( by V_OUT/ (R_{FB TOP} + R_{FB BOT})). I recommend that the feedback resistors be removed. Other than loading the device, the feedback resistors will not influence TLV73311PQDRVRQ1.

Regards,

Srikanth

0 Aaron Chen (FAE) over 2 years ago in reply to Srikanth Lolla Venkata

TI__Intellectual 1310 points

Hi Srikanth,

Regarding to the first question, what will it happen if I connect it to ground?

Thank you.

Aaron Chen

0 Srikanth Lolla Venkata over 2 years ago in reply to Aaron Chen (FAE)

TI__Genius 12040 points

Hi Aaron,

I will email you my response, I will close this thread for now.

Regards,

Srikanth

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TLV758P: 1. Can I connect PNC to GND on TLV75801PDRV? 2. Can I remain feedback loop resistors on TLV73311PQDRVRQ1?