at TA = 25°C, VS = 3.3V, VIN+ = 12V, VSHUNT = (VIN+) – (VIN–) = 0mV, and VBUS = VIN– = 12V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Quiescent current

350

450

μA

Power-down mode

0.5

2

Power-on reset threshold

2

V

(1)

RTI = Referred-to-input.

(2)

Input leakage is positive (current flows into the pin) for the conditions shown at the top of this table. Negative leakage currents can

occur under different input conditions.

(3)

SMBus timeouts in the INA3221 reset the interface whenever SCL is low for more than 28ms.

INA3221

SBOS576C – MAY 2012 – REVISED SEPTEMBER 2025

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