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Part Number: BQ27426
I was looking in the schematic and layout of this ref design: www.ti.com/.../TIDA-01012
Wireless IoT, Bluetooth® Low Energy, 4½ Digit, 100kHz True RMS Digital Multimeter. I notice BT1, terminal 2, the negative terminal (pack-) is not connected to GND node -- the gate of the P-Mosfet (D3).
In fact I don't see the BT1 node 2 anywhere in the layout. Should it not be there?
If I decide to use this part in my design, should I not connect the BT1 battery negative terminal (pack-) to GND and P-Mosfet together? Please advise.
Also, I'll be using 3.3V for I2C interface, should I use 4.7K for I2C pull-up? I already use I2C in my board and has the necessary pull-ups for SDA and SDC, do I need to add additional pull-ups near to
this part when routing I2C? I'm considering adding this part to an existing design so I wanted to check to be safe.
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In reply to Onyx Ahiakwo:
Thanks for the info.
BT1 is the battery connector in the schematic with +ve (term: 1) and -ve terminal (term:2 ). I don't see the -ve terminal is routed or shorted to GND which I was expecting.
In reply to Andy Sarangi:
I am seeing BT2 connected t ground. Are we looking at the same schematic?
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