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A quick questions about the BQ24262 chip that we are using. We are trying to code for a certain use case where there is no input (Vin) plugged in, and the user is powering the system (Vsys) only off of the battery.
We run the battery voltage to an internal…
We are using a BQ24262 in our design, and have a question about idle current draw.
The scenario is where there is a battery (Vbat) but there is no input source (Vin). We are running along nice and fine, and then the user turns the unit off with a switch…
Part Number: BQ24261M The datasheet says that BQ24260 and BQ24261 are NRND (it covers BQ24262 and BQ24261M as well).
The product pages say that all are NRND.
Which is correct?
Jesus,
That is correct. You will need to add an external FET between BAT pin and battery in order to disconnect battery from SYS. The I2C version of this IC (e.g., bq24262) has integrated SYSOFF function. Another I2C IC, by25896, has the same functionality…
Other Parts Discussed in Thread: BQ25890 , BQ24295 Hello,
I designed a circuit to power external circuits using BQ24295. However, I saw that there's 30mS delay after I remove VBus. I had a look at data sheet and it is clearly mentioned that there'll be…
There is no drop in replacement with 4.4V charging. The closest fit would be the host controlled bq24262. The host would have use I2C communication to set the charge voltage (and current, input current limit, etc.) registers. We have other ICs that charge…
Hey Donald,
I think you may want to consider the bq24160/0A/3. These series of parts are BC1.2 compatible and have host control as well, all in a VQFN package.
If you can live without the BC1.2 integrated detection and limit the input power solely…
Jeff,
Thank you for the timely response. Per your suggestion, I looked at the BQ24262 and see its advantages based on your concerns regarding an overheating battery pack. Unfortunately, my current system includes a battery pack that doesn't expose…
Regarding 1, Drive PSEL high to select USB100 (bq24261) or USB500 (bq24262) mode, drive PSEL low to select
1.5 A mode. PSEL cannot be left floating.
Regarding 2, the first I2C write puts the IC into HOST mode and will change the input current limit…
