Forum Post: Buck Boost + LDO
Hi All,1) My customer is looking for a device that will take in 1.9V to 4.5V and output 2.5V to 2.6V at 100mA. He is after switching frequency greater than 1MHz.2) LDO 1.9V to 4.5V input and 1.3V...
View ArticleForum Post: TPS92560_Test_Report_PMP8008
HelloI've found TPS92560 test report on PMP8008 snvu198.pdf.There are lollowing description.; Input power sources : 12VDC / 12VAC (50/60Hz) / Electronic...
View ArticleForum Post: RE: LM1086 Overshoot
The LM1086 is intended for used with Aluminum or Tantalum capacitors.If you use ceramic capacitors for Cout, adding a series R to simulate the ESR requirement should help.See "STABILITY CONSIDERATION"...
View ArticleForum Post: RE: UCC2806 Pspice model
Thank you. [quote user="John Bottrill"]Praveen,The ICs are make exactly the same. The testing limits are the only difference. The UC1846 is tested to tighter tolerances so that the device can operate...
View ArticleForum Post: tps65130evm-063
I wanted to test the evaluation board and compare my measurements to those depicted on page 8 of the tps65130 datasheet. I connected a dc power supply to vin and gnd with j1 and j2 enabled, i enabled...
View ArticleForum Post: Using the bq77910A with bq34z110 to balance lead acid batteries.
I'm looking into developing a small scale lead acid battery management system using the bq34z110 gas gauge with the bq77910A cell balancing and protection chip as recommended in the datasheet for the...
View ArticleForum Post: LM5101A High output issues
Hi,I've been working with the LM5101A for a week now and have been having some trouble getting a signal out of the HO output of the IC.Right now these drivers will be sending a signal to a half...
View ArticleForum Post: RE: Why the setup converter just reach 100V?
Hello Dison,What current are you testing at for your higher current design? Are you seeing lower voltage at no load? Or is it 150V at no load and then drops when you start increasing load? What is the...
View ArticleForum Post: RE: LM27341-Q1 and LM2734Z-Q1
Hello Tony,This post somehow slipped our radar.The LM27341 has a minimum on time of 65ns as you saw in the datasheet. This can be realized as follows:ton(min) = Vout/(VinMax*Efficiency*Frequency)....
View ArticleForum Post: RE: TPS54061
Hi Bradley,Yes this is in our plans. I don't have an exact date right now but it should be available soon.Best Regards,Anthony
View ArticleForum Post: LDO 1.9V to 4.5V input and output 1.3V to 1.4V 1mA
Hi Ti,I’m an Avnet FAE in SydneyMy customer is looking for a LDO 1.9V to 4.5V input and output 1.3V to 1.4V 1mA current quiescent current less than 50uA. Any suggestions on how to narrow this down to...
View ArticleForum Post: RE: TPS40077 PGOOD pull-down capability
Hi Gregory,The absolute max voltage on PGD is given in the datasheet as 6V. I think the current should not be a concern because to get logic low on PGD, the current cannot be high with proper pull-up...
View ArticleForum Post: RE: Disabling the Voltage Feed-Forward in TPS40057
Hi Soo,Based on the information you mentioned, I think the OCP got tripped at low Vin due to the Rds,on increase at low gate drive voltage. By adding the schottky diode, the voltage drop from BP10 to...
View ArticleForum Post: TPS65930 - keypad controller HW scanning
Hi team,A keypad matrix (5 buttons) is connected to the keypad controller module which is interfaced with the OMAP3530 processor. I have few basic doubts regarding the key scanning methodology and...
View ArticleForum Post: RE: tps53624 shut itself off at high current usage
It could be current limit operation. During pulse by pulse current limit, the switching on time is terminated early, so the output voltage is decreased. It looks like that is a pulsed load step and...
View ArticleForum Post: RE: LM3671-Q1 1.25V
Hi John, Seems the part numbering designations have not yet been assigned, not even for the adjustable version. While I'm investigating this, you might want to look at the LM2734-Q1, as it is now...
View ArticleForum Post: LP3950 LED Driver
I have found LP3950 LED Driver. This can be done by 1pin-Connect function in Default Mode with Audio Synchronization. But It is not clear, which are default values used in the default mode. In...
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