DRV8838: Total sleep current

jonathan Bailey

Part Number: DRV8838

I am considering using the DRV8838 H bridge driver, the application is battery operated with a long service life so sleep current is important.

From the data sheet the sleep current is specified at 120nA through Vm + Vcc. However the logic low input current with Vin = 0V is specified at

5uA max. It is not clear if total system sleep current is 120nA + 15uA max with the 3 digital inputs when in sleep mode. Can you clarify please.

Thanks

0 Keerthivasan Kumanan 3 months ago

Hi Jonathan,

Please refer to this e2e post:

best,

Keerthi

0 jonathan Bailey 3 months ago in reply to Keerthivasan Kumanan

Hi Keerthi

That is indeed the same question. So just to be clear the Input logic low current specification of -5uA to +5uA is owing to the

100K pull down resistor over the acceptable logic low voltage range or -0.5V to +0.5V, rather than at Vin = 0V as specified on the data sheet.

Thanks

Jonathan.

+1 Keerthivasan Kumanan 3 months ago in reply to jonathan Bailey

Yes Jonathan.

Best,

Keerthi

0 jonathan Bailey 3 months ago in reply to Keerthivasan Kumanan

Thankyou

Regards Jonathan.