BQ76940 - Charge Pump
Dear Sir I refer to BQ76940 support Low-side NMOS directly Due to our customer need to do High-side NMOS structure Could you help to provide High-side NMOS example schematic for reference??Thanks
View ArticleChemistry selection
Dear all,In october 2012 I have asked wich ID chemistry I do select for a Samsung SDI cell ICR18650-26F. e2e.ti.com/.../219226The aswer was ID0192, the ID1165 is for a special case.Now I see in...
View ArticleThermistor Coefficient Calculator for TI Advanced Fuel Gauges
Hi everybodySLUA398 (www.ti.com/.../slua398.pdf) refers to a Excel spreadsheet which shall be "available as a zip file in the same location as this report". I went through the TI website and through...
View ArticleBQ27421EVM -G1A : How to write I2C code about initial and command transaction...
Dear SirI want to use microcontroller I2C communication with BQ27421.I don't know how to write I2C code about initial and command transaction sequence.Could you provide I2C sample code about...
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bq27531 + bq24192i Timer Question
Hi,I used bq27531+bq24192i. The bq4192i can’t timeout during 18hr charging and I found bq24192i EN_TERM is "0" and it's read only. How to use bq27531 to enable the EN_TERM? Thanks!
View ArticleI2c Read in bq40z50
Hi,I am trying communicate with bq40z50 using MSP430F5338 through i2c communication. In this i want to read the values from the contiguous memory (address) by passing the starting address (the...
View ArticleHardware fail-safe pins for bq20z95
In the documentation for the BootROM api (SLUU225) it mentions hardware failsafe pins for the bq803xx, which will put the chip into BootROM mode at powerup even if there appears to be a valid flash...
View ArticleNeed parts/circuit guidance charge NiMH from USB
Hello,I need to charge a 4.8V NiMH battery pack from a USB port. Currently my system is shown with a roughs sketch block diagram attached. at the bottom. I'm realizing this is a poor design because...
View ArticleBQ27425-G2A Low Temp issues , Suddenly SOC 57 (%) change to 0 (%)
Hi Team Now we and Customer starting evaluation for BQ27425 G2A for Low Temp and High Temp.We did first test Low Temp +5℃ / High Temp +45℃. ==== >>> This is OK. This both Temp condition...
View ArticleBQ34z110 Confirmation of Design steps for Impedance Track. 12V 7.2Ah Battery...
Hi ThomasCosby,I realized some mistakes on my previous post so i shortened it and corrected some mistakes, could you please take a look at my questions. I would liketo confirm my the Setup Procedurefor...
View ArticleBQ34Z100 NRND status just appeared on web site.
We are just about to go to production with our BQ34Z100 design and an NRND message has appeared on the website.Will the G1 be a compatible replacement or will the PCB need redesigned. Is the G1 just a...
View ArticleFor the bq40z50, is there a data flash storage format similar to those used...
For the bq40z50, is there a data flash storage format similar to those used for bq27541 and bq20z40/45 that holds only binary image of data flash ? I had crafted my own routines to very quickly load...
View ArticleBQ27621 integrated with IMX6 solo lite
Hi,I am trying to integrate the BQ27621 with IMX6 Solo Lite in android platform.I get the driver for BQ27621 from below link:github.com/.../bq27x00_battery.cAnd i added the driver and compile it .When...
View ArticleBQ33100 I/O Voltage Level
Hi,I am using bq33100 in my design, interfaced with microcontroller with 3.3V I/O level.What is the I/O level of the bq33100, especially the FAULT signal (Pin#15)Thanks in advanceKrishna
View ArticleBQ40Z50 Manufacture Date
Hi, I have been communicating with bq40z50 battery through i2c of MSP430f5338. In this i am reading the manufacture date as 33 by sending the command as 0x1B.My question is how can we convert the...
View ArticleBQ34z100 how to change parameters via uP after IT Enable (QEN is set)
Dear all,I want to change parameters in ~200 pieces of BQ34z100, but QEN is set in each of them.Is there another, easier way of changing parameters like "Design Capacity" than:1. enter ROM mode via...
View ArticleBQ40z50 Sleep Mode
With the older devices (i.e. BQ20z65) it used to be possible to determine the operation mode of the BQ by watching the pulses on the TS1 pin.Can I do the same with a BQ40z50 and if so, what are the...
View ArticleBQ40Z50 communication at 400 KHZ
Hi all,The datasheet for the BQ40Z50 has specifications for the SMBus XL at 400KHz in slave mode in the SLUSBS8 –DECEMBER 2013 document. But via the i2c communication of MSP430F5338 we can't able to...
View Articlecr123 connected in series
Hi!I need to measure how much capacity is left on two CR123 batteries connected in series. They give ~6V and I can't figure out which device from TI line fits this voltage. I have msp430 to interract...
View ArticleBQ34z100-G1 Pin connections
Hello,I want to use the BQ34Z100-G1 to read 4 lithium polymer batteries in series with a total of 14.8V and capacity of 10,000mAh. Also, I am not planning to use the 5-LED display but I want to use HDQ...
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