TPS2660: 402kOhm to RTN - is there flexibility

Frank H

Part Number: TPS2660

Tool/software:

Team,

I would like to understand the flexibility in selecting the 402kOhm resistance to RTN to select the Mode 'Current limit with latchoff'.

For the assembly of the PCB it would be much better to use a 442kOhm resistor as it is already used in the design. This would help to avoid needing another resistor reel in the assembly process.

What is the flexibility on the 402kOhm resistor that is mentioned in the datasheet? Is a 442kOhm resistor acceptable?

Thanks!

Frank

4 months ago

0 Amrit Jit 4 months ago

TI__Mastermind 32291 points

Hello Frank,

The resistor at MODE pin should be between 373k to 476k to ensure device “Current Limit with Latch-off” configuration.

442KOhms is fine.

Thanks

Amrit

0 Frank H 4 months ago in reply to Amrit Jit

TI__Intellectual 2670 points

Hello Amrit,

excellent. I assume this will hold also over temp and supply voltage?

If this was characterized somehow, can we share data?

Thanks!

Frank

+1 Amrit Jit 4 months ago in reply to Frank H

TI__Mastermind 32291 points

This is from design. It has not been characterized. Moreover, it's just a resistance which provides high impedance path at mode pin and tells the eFuse to operate at "current limit with latch-off"

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TPS2660: 402kOhm to RTN - is there flexibility