Forum Post: LM3481 Evaluation Board and EMI Pitfalls
TI Team,I have two requests. First, can I get the design files (gerber files) for the LM3481EVAL board? http://www.ti.com/lit/ug/snva304/snva304.pdfSecond, with the proposed layout on the evaluation...
View ArticleForum Post: RE: Help with LP2953
I agree. Thanks a lot for the help. I'll revisit this topic when I get the capital to buy a scope. It basically turns into a trickle charger the closer I get to my target voltage so this isn't a big...
View ArticleForum Post: RE: bq24272 External NTC Monitoring datasheet clarification
A followup: The user guide for the evaluation module states that the resistors calculated for the TS is for a 10k thermistor. R_HI = 1870 Ohm and R_LO = 4120 Ohm. Using the equations in the datasheet...
View ArticleForum Post: RE: Setting up Advanced bqMTester
Unfortunately I couldn't determine what the App note intended by 'Terminate voltage'.The Max Error is currently 1% and seems to have been the since the start.I'm currently running another charge cycle,...
View ArticleForum Post: use of TLC5951
I have been evaluating the TLC5946 and TLC5947 and have successfully driven an rgb led with both. I am now considering the TLC5951 as it appears to be cheaper and offers more functionality, and I have...
View ArticleForum Post: RE: LM3447 VCC Overvoltage Protection
Mike,The given LED was selected for optical design reasons, so unfortunately I can't change it.Would you suggest I try multiple secondary windings and diodes, or should I use the LM3450 and a LM3409?...
View ArticleForum Post: RE: TPS65070 LDO1 need 1kohm load to wake up
When you apply a voltage at AC or USB do you see SYS come up? Which IC is not functioning before to you add the 1k Ohm resistor? Can you provide a schematic?
View ArticleForum Post: RE: Materials Declaration PTH12050LAZT, PTH12020LAZT,...
Materials Declaration PTH12050LAZT, PTH12020LAZT, PTH08T260WAZT, PTH08080WAZT have always used the same tin/silver copper solder ball fro all lead free units,WAZ,LAZ ,HAZ.(SAC)I discussed this...
View ArticleForum Post: RE: LP3892IMM-3.3/NOPB output issue
Q1) Do you think such inrush current may damage the LP3982?A1) I don't think the current is actually through the LP3982 unless you measured current into the Vin pin. Not sure where you measured the...
View ArticleForum Post: Question related to the TI bq20z80 software during configuration
When updating the configuration file for the bq20Z80 Data Flash I find that I need to update TWICE in order for the update information to take effect under the System Data tab. The exception being the...
View ArticleForum Post: RE: LMR64010 / LM27313 FB divider network
Hans,There are really no consequences to either switcher as you are supplying more than the needed current. This 13.3K resistor sets the minimum current to the pin. With a 12K resistor you are supply...
View ArticleForum Post: RE: TPS54325 - How to reset latching protections.
OVP or UVP latching can be cleared by either cycling Vin or EN.
View ArticleForum Post: RE: Multiple Lithium Ion Cell Charging
Hi Vic,For a 30-40S pack, some options if gauging is a key requirement:(a) Gauge based on a subset of the total cell count, for example using the lowest 4 cells and using one of our already released...
View ArticleForum Post: BQ76PL536A fault signals without uC
Hi team, How much functionality does the BQ76PL536A lose with the absence of a uC in the system? More specifically, how are the error flags (FAULT signals, etc) read out without a host? How is the...
View ArticleForum Post: UCD9090 with a pair of TMP101 on the same bus.
Hi Team,Customer has an existing power management IC, UCD9090. They need to add a pair of TMP101 and need to put them on the same bus as they are short of available IO in that area.Looking through the...
View ArticleForum Post: RE: LM3481 Evaluation Board and EMI Pitfalls
There is also an L3481 sepic board. Let us know if you want the gerbers for that. http://www.ti.com/lit/ug/snva461/snva461.pdf Regards,Marc
View ArticleForum Post: RE: bq27500 and bq27541
Thanks for the clarification and the Flashstream application!
View ArticleForum Post: LM2936M-5.0
I am using an LM2936M-5.0 with 10uF ceramics on input and output pins. With no load the input currentis on the order of 3mA to 5mA, this should be on the order of 15uA - an idea what is wrong.Input...
View ArticleForum Post: TPS92551EVM need Gerber files
Hello: my customer is requesting Gerber files from the http://www.ti.com/tool/tps92551evm TPS92551 EVM. EAU is 1k/yr. regards and thanks, George Biner, FAE Arrow LA
View ArticleForum Post: RE: Need some clarification with buck regulators
Ok I see. So basically I just look at the chart and make an educated guess on the on/off times based on my cap value? I've been studying up on buck regulators and just though it had to be more...
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