What's Kx of LT8601?
Hi I don't understand what Kx means. In page 14 inductor selection of LT8601 data sheet, Kx is suddenly appeared.Why are K1 = 1.7, K2 = 1.0 and K3 = 1.4 selected ? Could you please let me know how to...
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LTC4089-5 cost reduction
Hi,We are doing some cost reduction studies for our product. On the power management circuitry we don't need the LTC4089-5 chip's high voltage input. All power is taken from USB Vbus voltage. So, if...
View ArticleLTC2955 - What happens if the "ON" pin is left open?
Wondering if the device will be ON? OFF? Maybe ON or OFF?
View ArticleComponent recommendation to generate +100 V and can drive up to 20 mA
Hi, I am working on constant current source that can deliver up to 20 mA for 5 kohm load. So I need to generate at least of +100 V to be able to sink 20 mA through the load. Can anyone recommend a low...
View ArticleLTC4155
To whom it may concern, Having issues with the amount of charge current on the LTC4155. Summary below: Setup:- Only using WALLSNS pulled up to Vbus without overvoltage protection- WALLGT, USBSNS,...
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LT4041 Assistance
Hi all, I am using the LTC4041 in a new application. For backup I am using a 3V, 5F capacitor. System voltage is 3.3V. It appears that my actual charge current is not what is programmed by the PROG...
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LTC3440 - DC797A Vc pin
Hi, I am currently studying LTC3440 and have some doubts for Vc pin application. Notice DC797A demoboard circuit Vc pin is connected to another resistor divider R7 and R8.Might I know what is the...
View ArticleADM8318 / ADM8320 WDI switching
I apologize in advance if this place is inappropriate for my post.I have a question about ADM8318 / ADM8320.I was asked by the customer as follows.I would like to connect a switch to the WDI terminal...
View ArticleLT8302+LT8640S simualtion
HelloOur customer will use LT8302 fly back and LT8640S.(24V-> 5.5V by LT8302 and 5.5V-Vf-> 3.3V about 4A by LT8640S.(Refer to attached slide 1)He simulated this design by...
View ArticleProblem with LTC4015
Hello. I have a problem with trying to reach 16A charging current with Vin = 28 V, while charging Li-Ion 6S Battery. The way I increasing current is adding resistors to input and output shunts. Maximum...
View ArticleLTC4010
LTC4010 for NiMH battery charger application. There are some field failures: CHRG indicators ON, FAULT off, no PWW, no charger current. VTEM 10k to GND.
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LT8364 frequency compensation and soft start
I want to design a power supply with the following specs:Vin: 11-13V (12V nominal)Vout: -7.5VIout: 1A I have followed the data sheet and calculated the key components and I am doing some simulations...
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EME & EMI of the DC2039A demo kit (LTC4015)
what's about the Electromagnetic Immunity and Electromagnetic Emission of the DC2039A kit and, in general, of the evaluation boards from Linear Tecnologies / Analog Device?
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ADI Battery Charger MPPC/MPPC Solution
Dear All:I can't understand Battery Charger IC selec on the ADI website ,The Features many of the fields display errors ,ex:LTC4162 have MPPT function but website select table show Maximum Power point...
View ArticleLTC6804-2 and LTC6811-2 reference voltage 1 and 2 at 0V.
Hello, I installed 2x LTC6811-2 and then 1x LTC6804-2 on the same board and I don't have any voltage reference output at anytime. The functional diagram in the datasheets shows that VREF1 should be...
View ArticleLTC3331 Solar Cell
The data sheet says that the maximum current is 50mA into AC1/AC2. When I look at solar cells (from Digikey) it looks like the biggest solar cell that has a current <=50mA is 229mW I guess my...
View ArticleLTC3331 USB Vin
I was planning on using a solar cell on AC1/AC2. And I was hoping to attach a USB connector to Vin... so I could also plug in the device... e.g. if it was brought inside. Do I understand correctly...
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LTC3784 (LTC3787)- 1200W 4 phase FCC design - Hot inductors while idling, no...
Hi Linear-Staff, we designed a 4-phase layout with the LTC3874 in a 2/4 phase arrangement. Everything seems to perform like expected but the inductors getting really hot when using FCC with no load...
View ArticleADISimPE 32Khz Crystal Model
Anyone have a model I can add to ADIsimPE ? Regards, Dana.
View ArticleDC2039A demo kit (LTC4015) - increase the output current capability from 10A...
I have to change the UPS now based on an old and, worse, very low efficiency, fans system.I have to fnd a solution in a very short time because the production should be ready starting fromt the end of...
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