TPS563201: how to define the maximum value of the output current in this buck...
Part Number: TPS563201Hi,May I ask about how to define the maximum value of the output current in this buck circuit? When I set the output current value beyond the maximum value, the output voltage...
View ArticleEMB1428Q: EMB1428 switch not open
Part Number: EMB1428QHi,We're designing EMB1428 board without EMB1499.I've tested SPI is woks well. I sent 0xF0 and EMB1428 return 0xAF.But only PSW3 open, CSW7 CSW6 is not open.If I sent 0xE0, only...
View ArticleBQ25570: Multiple BQ25570 in parallel?
Part Number: BQ25570Hello,In a previous question, BQ25570: Multiple device with Single Storage element, it was established multiple BQ25570's can be used in parallel to charge a storage device.However,...
View ArticleLDO with soft start, 500 mA current, and low drop out for 1.2V -> 1.1V...
Hello,We have designed in a TPS7A11 LDO for a 500 mA, 1.2V VIN, 1.1V VOUT regulation circuit. However, we now have concerns about current inrush and the need to perform soft start locally.I am aware...
View ArticleBQ51013B: BQ51013B high temperature of chip and coil
Part Number: BQ51013BHello.We are developing small wearable devices and we going to charge it wirelessly. We created PCB with all components, and also with BQ51013B chip and all passive components. PCB...
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BQ40Z50-R2: Cell Voltage Discrepancy during Charge and Discharge
Part Number: BQ40Z50-R2As part of a battery management application the 4 cell battery pack is wired to the BQ. We are noticing a recurring effect of a difference in cell voltages during charge and...
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TLV62569: tlv62569 Rja calculate
Part Number: TLV62569Dear team,Customer calculate the Tj with Ta=86 as below picture shows, it seems that the IC has reached the temperature protection limitation. Could you kindly help me correct?...
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TPS54350: Behavior under R1 Short or Open
Part Number: TPS54350Dear, Sir.My customer is considering to apply TPS54350 for their system. Now, they are asking as following; What kind of behavior would be indicated when the upper side(R1)...
View ArticleBQ34Z100: Search new chem ID
Part Number: BQ34Z100Good afternoon!In the new bqStudio program, my chip is not displayed. It says "Auto Detected Device: 0100_0_06". This is not on the list. What to do? Can I use the old version of...
View ArticleLM2576S-ADJEVM: Components RFF and CFF on the schematic in the User Guide
Part Number: LM2576S-ADJEVMThe schematic in the LM2576S-ADJEVM User Guide shows two components, RFF and CFF, which are mentioned in the BoM but nowhere else. They are connected as a series RC branch in...
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TPS2120: solder bridges are happend
Part Number: TPS2120Hi team,My customer have made metal mask for TPS2120 WCSP package.Although the customer followed following solder paste example, solder bridges were happened (just 2% ICs). Do you...
View ArticleTPS61165: VFB Lower LIMIT
Part Number: TPS61165Hi, Team,Is there a lower limit for VFB? Is it okay to set 1mV?Best Regards,Satoshi Yone
View ArticleAlternate part number (Automotive grade) for BQ25601RTWR
Dear Sir,We are using BQ25601RTWR part in one of our design.This part is industrial grade part.Currently we are looking for automotive grade component.Request you to please suggest the alternate part...
View ArticleLMR33630: Regarding Low input voltage
Part Number: LMR33630Hi , We are designing the regulator for output voltage rating of 16V and 3A, I have a query on how low an input voltage can go for the spec mentioned. The datasheet says max output...
View Article12V,>1.5A Liion/polymer battery with power path management
Hi, We need 12V Li-ion/poly switching battery charger with power path management IC .Pls suggest any part no.Regards,K.Saravanan
View ArticleBQ27Z561: BQ27z561 gives garbage readings
Part Number: BQ27Z561Hello,We are using bq27zz561 IC. During overnight testing we found that we are getting garbage reading sometimes. Can you please help us to get rid of itDuring testing, we simply...
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TL494: TL494 maximum duty
Part Number: TL494I use TL494 to design my circuit,I set the frequecny is 100kHz,CT is 4.7nF, RT is 2K variable resistance,when I was test circuit,I find the duty isn't working in maximum,it was...
View ArticleLM5155: Voltage drop with load
Part Number: LM5155Hi Our customer see voltage drop with load (not full load).I got their waveform and see oscillation at CS and Gate. I would like share the waveform, customer’s schematic and...
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TPS2511: Issue when charging IPhone 6s
Part Number: TPS2511Hi We see an issue that when charging iphone 6S, the iphone 6S touch response will delay. Would you help review if below DP and DM behavior are correct ? Below are the waveform...
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TPS62250: There's an instant pressure drop
Part Number: TPS62250Hi：I used TI TPS62250 IC for dc-dc voltage conversion, with input voltage of 3.5-4.35v (battery voltage) and output voltage of 3.3v.At present, the maximum instantaneous load...
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