INA190 datasheet(3/37 Pages) TI

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5 Pin Configuration and Functions

IN±

ENABLE

IN+

REF

GND

OUT

Not to scale

Figure 5-1. DDF Package 8-Pin Thin SOT-23 (Top View)

Table 5-1. Pin Functions

TYPE

DESCRIPTION

NAME

NO.

ENABLE

Digital input

Enable pin. When this pin is driven to VS, the device is on and functions as a

current-sense amplifier. When this pin is driven to GND, the device is off, the

supply current is reduced, and the output is placed in a high-impedance state. This

pin must be driven externally, or connected to VS if not used.

GND

Analog

Ground

IN–

Analog input

Current-sense amplifier negative input. For high-side applications, connect the to

load side of the sense resistor. For low-side applications, connect to the ground

side of the sense resistor.

IN+

Analog input

Current-sense amplifier positive input. For high-side applications, connect to the

bus voltage side of the sense resistor. For low-side applications, connect to the

load side of the sense resistor.

—

Not internally connected. Either float these pins or connect to any voltage between

GND and VS.

OUT

Analog output

OUT pin. This pin provides an analog voltage output that is the gained-up voltage

difference from the IN+ to the IN– pins, and is offset by the voltage applied to the

REF pin.

REF

Analog input

Reference input. Enables bidirectional current sensing with an externally applied

voltage.

Analog

Power supply, 1.7 V to 5.5 V

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INA190-EP

SBOSA74 – MAY 2022

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