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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At one point, D4 wasn’t populated yet and the left hand side INA didn’t draw too much current.
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You must log in or register to reply here. Hi everyone, I’m trying inq139 build a solar charger, using a simple boost configuration. From the data sheet: Pioneer Elite vsxtx water damage no power Started by Watin Today at Forums New posts Search forums. Initially, I had only the right datasehet side INA populated, then only the one on the left side of the schematic – both show the same behaviour.
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. One has now disappeared in smoke. Articles Top Articles Search resources.
Datasheets, Manuals or Parts. Replacement Transformer Started by ncag Today at 7: I checked for short circuits and everything, nothing. 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. Thread starter Odysseas Start date Oct 21, Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.
However, the current monitors start drawing way too much current the instant power is applied. Post a good photo of front and back of your PCB or breadboard. I’ll triple check the pinout again. Welcome to our site!
INA139 current monitor draws too much current
To participate you need to register. Media New media New comments Search media. 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.
To sense the current coming from the solar panel and going into the battery, I use two INA current monitor chips.
INA Datasheet(PDF) – TI store
Try to keep front and back photos the same size. This would suggest that the problem only appears when pins 3 and 4 on the chip see any voltage above eatasheet. Click here to register now.