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DRV120 Sense Resistor Value

Poh Kok Keng
Genius 5512 points
Other Parts Discussed in Thread: DRV120, DRV110

hi James,

Am I able to know what is the internal resistor sense value inside the DRV120?

Rgds,

kpk

  • 0
    TI__Genius 14487 points
    KPK,

    The datasheet says the resistance of the OUT pin to ground is 1.7-2.5 Ohms. My educated guess, based on comparing the DRV110 and DRV120 datasheets, is that the sense resistance is 1-Ohm. The rest of the OUT pin resistance would be due to Rds(ON).

    Is knowing the sense resistor value separate from Rds(ON) important to your application? I'm asking so I can make a case to update the datasheet with this parameter.