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pendent and can range from V to 40V for the INA and. V to semiconductor products and disclaimers thereto appears at the end of this data sheet. The INA and INA are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and. Texas Instruments INA Explore Texas Instruments on Octopart: the fastest source for datasheets, pricing, specs and availability.

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INA139 Datasheet

This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Replacement Transformer Started by ncag Today at 7: I checked for short circuits and everything, nothing. Initially, I had only the right hand side INA populated, then only the one on the left side of the schematic – both show the same behaviour.

Post a good photo of front and back of your PCB or breadboard. What could be going on here? To sense the current coming from the solar panel and going into the battery, Datasheft use two INA current monitor chips.


INA139 current monitor draws too much current

However, the current monitors start drawing way too much current the instant power is applied. Not even a single miliamp. From the data sheet: Thread starter Odysseas Start date Oct 21, You must log in or register to reply here. This would suggest that the problem only appears when pins 3 and 4 on the chip see any voltage above ground.

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The battery voltage will not exceed 30 volts. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at There is nothing wrong with your schematic, it ties up perfectly with the INA datasheet.

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So, to determine whether the IC itself is defective, tie both inputs together essentially shorting the current sensing resistor and see whether the IC repeats the anomalous behavior.

Try to keep front and back photos the same size. As it’s not, I’d very carefully check the pin connections and orientation of the ICs, a track fault or pin swap is the most likely problem. Odysseas Member Oct 21, By continuing to use this site, you are consenting to our use of cookies.


Pioneer Elite vsxtx water damage no power Started by Watin Today at I’ll triple check the pinout again. Welcome to our site!

Odysseas Member Oct 22, Media New media New comments Search media. Datasheets, Manuals or Parts. Click here to register now.

For a better experience, please enable JavaScript in your browser before proceeding. Hi everyone, I’m trying to build a solar charger, using a simple boost configuration.

I tried ramping up the battery voltage through a PSU no solar panel connected and at one volt, the current draw is already about mA. Forums New posts Search forums. INA current monitor draws too much current.

INA Datasheet(PDF) – TI store

One has now disappeared in smoke. Thanks for any help. To participate you need to register. Articles Top Articles Search resources. At one point, D4 wasn’t populated yet and the left hand side INA didn’t draw too much current.