*Time

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

0

0.2

0.4

0.6

0.8

1

1.2

Comp_IN

I_Load

CMP_OUT

OUT

INA200, INA201, INA202

www.ti.com

SBOS374D – NOVEMBER 2006 – REVISED OCTOBER 2015

Typical Application (continued)

8.2.2 Detailed Design Procedure

Figure 33 shows the basic connections of the device. The input terminals, IN+ and IN –, should be connected as

closely as possible to the current-sensing resistor to minimize any resistance in series with the shunt resistance.

Additional resistance between the current-sensing resistor and input terminals can result in errors in the

measurement. When input current flows through this external input resistance, the voltage developed across the

shunt resistor can differ from the voltage reaching the input terminals.

Use the Gain of the INA20x and shunt value to calculate the OUT voltage for the desired trip current. Configure

R1 and R2 so that the current trip point is equal the 0.6-V reference voltage.

8.2.3 Application Curve

Figure 34. Low-Side Switch Overcurrent Shutdown Response

9 Power Supply Recommendations

The input circuitry of the INA200, INA201, and INA202 devices can accurately measure beyond the power-supply

The output voltage range of the OUT pin, however, is limited by the voltages on the power-supply pin.

Copyright © 2006–2015, Texas Instruments Incorporated

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Product Folder Links: INA200 INA201 INA202