AD5259 communication problem
Hi Engineering Zone, I encountered the following problem when during my design. AD5259 digi-pot having communication issue with my LT IC. This happen when my ST Micro-controller was burnt during my...
View ArticleHigh-side current sensing at 120V
Hello,I am searching for a good idea to sense the current of 0 to 100 mA at a voltage level of 0V to 135V. The result should be a current to ground or a voltage respecive to ground. The first problem...
View ArticleWhat is the output voltage when I use 3.3?
Hi, The ADP1720 says that the supply voltage is from 4v to 28v in order to make it work properly.My question is that if now I use 3.3v for the input voltage, what will happen? Is the output voltage is...
View ArticleADP5065
I would like to use the ADP5065 stand-alone i.e NO Microcontroller interface. TheIIN_EXT = High for 500mA Vin limit My questionIf USB is present and the battery is NOT present, what voltage will...
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ADP5052 PWRGD Question
Dear Sir:I tested ADI ADP5052 demo board "ADP5052-EVALZ to found out PWRGO (Power Good) demo boardanddatasheetissomewhat different. pls see below: Q1: the datasheet Page4 "Table 1."Power Good If CH1...
View ArticleUsing ADN-8831 TEC driver with a 0.8V/1.8A TEC
Hello, I am very interested in using this IC to control an APD TEC that has maximum TEC ratings of 0.8V/1.8A. Looking at the specs of ADN-8831, I am guessing it can be used and I am thinking of...
View ArticleADM1177 TIMER pin behavior
HiI would like to ask about ADM1177 hotswap device.Can I ask in engineerzone? I would like to know about VTIMER behavior in figure 32 and 33.Datasheet RevC P13 of 24 say"A hot swap fails if the load...
View ArticleBoost Controllers for 3.3V to 12~24V conversion
Hello sirs.I have a PCB where I have a precision 3.3V power supply with 1A capacity.I will need another power supply with 12V or 15V or 20V or 24V capable of supplying around 80mA DC, generated from...
View ArticleTied LED driver outputs
Hi I would like to make sure.For example, ADD5203, ADD5211 were LED drivers of multi outputs.Can these devices tie the outputs to increase the driver current?These are just current source outputs, so...
View ArticleHow do I calculate LDO (Low Drop out Regulators) efficiency?
How do I calculate LDO (Low Drop out Regulators) efficiency?
View ArticleBuck DC-DC converter ICs, with internal MOSFET and freewheeling diode ???
Hi.I am looking for a buck converter IC available in a small SMD package like SOT-23 (or other small one) to a power supply with these parameters: Vin = 16 to 30VDCVout = 4.4VDCIout = 250mA The maximum...
View ArticleBattery Management, LED Driver ICs
Hi! I’m hoping you can help me... I am looking to develop a new bike light, but need help determining which components to use. The choices are overwhelming! I realize that you are primarily an IC...
View ArticleQuestion for ADP198ACPZ
Dear Sir/Madam, I have a question for you.Please let me know about the set up for Rise-time and SEL0/1 pins. At the explanation on your datasheet page.14, I can find Rise time(tRise) is fixed by the...
View ArticleAdp2370 fixed voltage simple question
Hi guys, I have just tried the adp2370 and it works GREAT! Really great, so I will use it for sure in my on-going design. Just wanted to clarify one thing: the idea is I currently use the adjustable...
View Article60 - 400Hz inverter with a variable duty cycle
I would like to make a 12 volt DC to 240 volt 60-400 Hz inverter (sine, square or triangle) with a variable duty cycle, 5-30%. Resistive load. Efficiency is very important. Thanks, Ed
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ADP5050-EVALZ EVB Board User Guild Error List
Dear Sir:I've testedADP5050-EVALZ EVB Boardand reading"ADP5050_52 Demo Board User Guide - PrB" pdf file but found of ADP5050 User guild-PrB Page 15 SchematicandPage18 Bill Of Material (BOM)have...
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ADP1047 THD parameter and gain/phase margin
Hi , SirBased on ADP1047 300 Watt Evaluation Kit , THD over 15% during light load condition . Does have anyway to reduce this THD ? We concern THD , It should lower than 15% as less as better . Does...
View ArticleLDO noise performance when cascaded from a buck in ADP5022
I want to cascade one LDO from one of the buck in the ADP5022, will the switching noise of the buck affect the LDO performance?
View ArticleAD5259 communication problem
Hi Engineering Zone, I encountered the following problem when during my design. AD5259 digi-pot having communication issue with my LT IC. This happen when my ST Micro-controller was burnt during my...
View ArticleDo ADI offer a low noise push-pull driver?
I'm considering using one of the Linear Technology push-pull driver chips, e.g. LT1533, LT1683 or LT3439. At over $4 they are pretty pricey, so I'm looking for alternatives. Do ADI have anything...
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