Forum Post: RE: LM317AMDT TO-252 Theta JC/JA Questions
Thanks. Any idea where the data sheet Theta JC value of 12°C/W came from?
View ArticleForum Post: RE: BQ77PL900 undervoltage
That is a good question. As a protector, the bq77PL900 does not know when the pack is charged and does not have any way to signal the outside world that charge is done. The charger simply must...
View ArticleForum Post: RE: LM5010A-RTN Pin
That is correct. If you need smaller current parts see LM(2)5007.
View ArticleForum Post: RE: [LM1117] Power supply: Overload problem and the Regulators...
Naveen,The power lost in the 5V regulator(s) is (Vi-Vo) * IOUT = 3.0 watts.The power lost in the 3.3V regulator(s) is (Vi-Vo) * IOUT = 0.68 watts.The power lost in the 1.2V regulator is (Vi-Vo) * IOUT...
View ArticleForum Post: RE: High-Vin, High-Efficiency Power Solution Using DC/DC...
Thanks for your timely reply Chris. After reviewing the datasheets It doesnt appear that supplying Vin directly to the higher voltage rated switchs will increase the efficiency of the design. So I will...
View ArticleForum Post: UC3823A sync problem
Using the circuit in Figure 10 on Page 9 of the UC3823A spec sheet does not work on the bench or in simulation at 19.5 kHz unless replacing 39pF with 4700pF, 120 ohms with zero and 22 ohms with 16...
View ArticleForum Post: RE: Monitoring Voltages with Scaling Circuits
Also see this document,http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=slva385&fileType=pdf
View ArticleForum Post: BQ20z65 Force clear safety flags
I have a BQ20z65 with NR bit set to 1, showing SCD and AOCD flags. Is there a SMBus command that can be used to reset the flags?
View ArticleForum Post: RE: LM3100MH Input pins explode
Attached is the schematic, BOM, and CCA layout.(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)
View ArticleForum Post: RE: POE - maintain power signature
The basic PD controller like TPS2375 cannot meet the MPS current when it is unloaded. On the EVM there is a jumper (JP7) which is installed at the factory and this meets the MPS level (see section 3.2...
View ArticleForum Post: RE: bq34z100 senc file download
GeorgeThe v0.6 senc file attached to a previous post on this message string is the latest firmware release.RegardsTom
View ArticleForum Post: Sn6501 not switching
Hi, I am trying to switch from max253 with 78253 to sn6501 and the same transformer (3V3 to 3V3). But even after 3 re-tries I am not getting the driver to switch. Not even with the simplest test...
View ArticleForum Post: RE: Regulation Problem with LM25088-2
HiIf it does not work, you can try connecting RES pin to ground. This will completely disable the hiccup mode opeation.Regards,
View ArticleForum Post: TPS65910A3 - I2C Register Access
Hi Team,Is there anyway to protect the register settings in PMIC TPS65910A3? Customer is trying to avoid any access to PMIC registers from OS level via I2C bus. The reason/worriness is, if their end...
View ArticleForum Post: RE: bq20z75 V1.81 - DF Help text - where to find the html-file ?
Kjell,At the time of my enquiries last year I was told it does not exist, but it was being worked on.RegardsSimon Buchwaldwww.amatek.com
View ArticleForum Post: RE: EV2300 end of line tester
Hi,Can you also let me have a copy of the source code please on this email address: simonb@amatek.com.auRegardsSimon Buchwald
View ArticleForum Post: bQ34Z100 Alertpin Type , Is this open drain or CMOS spec at...
Hi I have some question for BQ34Z100 pin spec.This device has P5 as Alertpin ( *same as HDQ line). Question Is this Open drain or CMOS at Alrertpin fuction?? ( Mode3 P5 ) RegardMarch...
View ArticleForum Post: TPS62150 versus TLV62150
1. Could the TPS62150 replace the TLV62150? (fot 9V input and 5V or -5V outputs).2. Regarding the control inputs SS/TR, DEF and FSW in -5V or -3.3V circuit: (a) In the TLV62150 data sheet, figure 40...
View ArticleForum Post: RE: TPS5420 - Icout(RMS) equation question
Anthony,Thanks you very much for correction and the speedy reply.Regards,John
View ArticleForum Post: 4 switch buck-boost with UCD92xx
I want to design a buck-boost converter with 4 (external) switches and was wondering whether this can be done with the UCD92xx digital power family devices.Andreas
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