0

20

40

60

80

100

0.1

1

10

100

Time (s)

C027

5

7.5

10

12.5

15

17.5

20

±50

±25

0

25

50

75

100

125

150

Temperature (

ƒC)

C026

13

INA260

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SBOS656C – JULY 2016 – REVISED DECEMBER 2016

Product Folder Links: INA260

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Copyright © 2016, Texas Instruments Incorporated

Feature Description (continued)

External factors (such as ambient temperature, external air flow, and PCB layout) can contribute to how

effectively the heat developed as a result of the current flowing through the total package resistance can be

removed from within the device. Under the conditions of no air flow, a maximum ambient temperature of 85°C,

and 1-oz. copper input power planes, the INA260 can accommodate continuous current levels up to 15 A. As

shown in Figure 21, the current handling capability is derated at temperatures above the 85°C level with safe

operation up to 10 A at a 125°C ambient temperature. With air flow and larger 2-oz. copper input power planes,

the INA260 can safely accommodate continuous current levels up to 15 A over the entire –40°C to +125°C

temperature range.

Figure 21. Maximum Current vs Temperature

8.3.2 Over-Current Capability

The INA260 features a physical shunt resistance that is able to withstand current levels higher than the

continuous handling limit of 15 A without sustaining damage to the current-sensing resistor or the current-sensing

amplifier if the excursions are very brief. Figure 22 shows the maximum overload current versus time curve for

the INA260.

CAUTION

Operation at or above this curve, Figure 22, can result in device damage or permanent

erroneous current readings.

TA = 25°C

Figure 22. Maximum Overload Current vs Time