Hi,
We set the configuration via I2C (non default mode) and charge a 12Ah Li-Ion battery with 1A. The safety timer is set to 9h, but this is obviously not long enough. We do not have the option to increase the charge current.
My questions:
1. There is…
Other Parts Discussed in Thread: BQ24297 , BQ24257 , BQ24250 Hi, we have just noticed that this IC is shown as not recommended for new designs.
Could you tell us why it is NRND and what your plans are for possible obsolescence, i.e. projected production…
Other Parts Discussed in Thread: BQ24257 Hello,
I'm trying to use bq24257 to charge li-ion battery, but it is not working for me. I think that problem can be caused by input voltage detection. Here is my schematic: 3364.sch.pdf
Additional to scheme…
Other Parts Discussed in Thread: BQ24257 , BQ24253 , BQ2425 , BQ24251 I notice that the BQ24257 is now listed as not recommended for new designs. I find this odd as it is listed in the 2015 Battery Management Guide as a new device. See page 19
The BQ24251…
Hi,
We're using the BQ24257 in a new design. We are not using I2C for the time being. Plan is to have only stand alone node.
We have shorted the D+ and D- as we use DCP (5V 2A). Rlim is shorted to ground with zero ohm resistor. Riset is 127Ohm.
We have…
I'm trying to use this charger in my product, but I keep getting prototypes returned because the lithium cell protection circuitry has kicked in, and the charger won't assert VBATSHRT to reset it, or enter PTM with no cell connected.
Actually…
Other Parts Discussed in Thread: BQ24257 , BQ24297 Hello,
In order to fast charge (2A) my product i'm using a BQ24257 regulator.
USB linked from connector to MCU (mass storage SD card function) and BQ24257 throw a protection.
Ii'm using IPAD or Samsung…
Other Parts Discussed in Thread: BQ24257 Hi,
In bq24257, is it all right that the pull up voltage of the I2C(SCL,SDA) and the CE is different?
For example, SCL,SDA are pull up to 1.8V, CE is pull up to 3.3V. Is it OK?
Other Parts Discussed in Thread: BQ24257 , BQ24250 I'm using protected 18650 cells in my design, but the BQ24257 won't detect and recover the cells if the undervolt protection has kicked in. The circuitry isolates the cell until an outside voltage is applied…