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Forum Post: RE: MC33063AQDRQ1 VIpk Current-limit sense voltage
Toshio-san,The package thermal impedance is calculated in accordance with JESD 51-7.However, I do not have details on the board size for that specification.
View ArticleForum Post: IC selection assistance - Li-poly backup scheme
Greetings. I am in the process of building a system that will charge a small capacity lithium polymer cell (~80mAh) from a larger capacity li-poly cell (~400mAh) – not unlike the larger capacity...
View ArticleForum Post: RE: LM2678 Output overvoltage problems
Hello Mauro,The input capacitance value for the circuit is too small and the lead inductance on the input power leads results in input side intability or oscillation that cause the IC input voltage to...
View ArticleForum Post: RE: BQ2002T Unknown state between Fast Charge and trickle
It looks like the constant charging current from the 10k resistor may help a bit to eliminate the undetermined state between fast charge and trickle (or top off), possibly by adding another 1mA to the...
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Forum Post: LM338T got hot at 2.5A...
Hi. the LM338T (TO-220) is rated for up to 5A. I had configured the regulator circuit to +5V output (with +9V input) and attached a 2 ohm 50W resistor load to test.At 2.5A it got very hot then...
View ArticleForum Post: RE: LM2733
David,Thanks for the information. we are looking into what we can provide quickly right now. As a side question, where can you get LT controller models other than built into LTSpice? My understanding...
View ArticleForum Post: RE: 26Vin to 3.3Vout LDO with low Iq needed
Ricardo,Try using lower value resistances for your resistor divider. 8K and 2K should work. The EN pin only sinks typically 300nA so you are not going to loose much efficiency. Based on a rough...
View ArticleForum Post: RE: LM3478 - Boost
I will look at the thread! I have a battery operated device and would like to run from 4 AA rechargeable batteries. The device only needs to run 20 - 25 minutes before recharging. So the source is not...
View ArticleForum Post: RE: BQ34Z100 and CHEM ID
I am able to use the Flash Tester program to get the .ROM file, but the ChemID is blank when loaded into the bq34.
View ArticleForum Post: RE: golden image dfi problems
Glad you have been able to complete your learning cycle. The gg files contains only user-accessible data flash constants (no chem id data) while the dfi contains encrypted data flash memories (same...
View ArticleForum Post: RE: 26Vin to 3.3Vout LDO with low Iq needed
Kartik,Thanks for your amazing Help!! Now ill continue with my design!As always, Texas Instruments employees like you, bringing us to the users oportunitly and kind help!!!!Thanks Again,Regards,Ricardo
View ArticleForum Post: RE: difference between impedance tracking in gauge ics
Find attached a ppt slide that explains the difference between both. The choice of guage is dependent on your application. Most likely it will be a single cell system side guage which you will...
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Forum Post: tps53353 circuit not working as expected?
Hi all,I designed my TPS53353 power section as mentioned in the figure.I am expecting a 5V,5A output from the IC. I was conducting some set of experiments with the Inductance value and the voltage...
View ArticleForum Post: RE: Problem with TPS3307-18: the chip keep in reset DSP with the...
Hi Daniele,At first hand, I do not see an issue with the application. What is the voltage on MR and what voltage is RESET being pulled to? Is this happening to all ICs or a couple? Have you tried...
View ArticleForum Post: RE: UCC28019 and UCC28019A
I am not subscribed to any of the microprocessor forums (or any besides AC/DC isolated power). I don't know of anyone specific that supports those products.
View ArticleForum Post: RE: flashstream and dfi
[quote user="Kishan Illur"]Hi dMax,Could you please send me the flashstream tool and example code files. I have sent you a friend request.Thanks[/quote]dMax,Please send me those files as well. I have...
View ArticleForum Post: RE: Inquiry regarding LM5030 oscillator frequency
Please use the equation provided in "Oscillator, Shutdown and Sync Capability" section in page 9 of LM5030 datasheet to determine resistor value for 20kHz. Please use it as a starting point and fine...
View ArticleForum Post: RE: Does UCD9081 EVM GUI support Window7-64bit?
Hi Shannon,The UCD9081 EVM GUI does support Windows 7 64-bit. It was updated in March. You can download it here.Regards,Dan
View ArticleForum Post: RE: BQ20z75, CHG and PCHG FET are off
Hello Ramiro,Thanks for responding!We think we've configured everything correctly, all other registers and parts of the device are working as expected. We are working with the tech ref doc for our...
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