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ADM1064 glitching on power up
Hi, I have a design that uses the ADM1064 super-sequencer device. Whilst tracing a fault with another device, I observed that two of the power supplies, controlled by the ADM1064 were glitching on...
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 ArticleADIsimPE schematic from UG-241
Hello, i recently downloaded the ADIsimPE files as recommended in UG-241 and it seems to be missing a file for the ADM1275/ADM1276. The MOSFETs PSM1R0-30YLC models are not included. I checked a few...
View ArticleADD5211 FET + Rsense heating
Hiya, I've got a small 4-string LED driver board made using AD5211.It's schematic is basically the 'application circuit' from current datasheet and from Eval_ADD5211_Calculation.xlsxRfreq = 49.9K...
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Selecting input power - external, usb or batteries
Hi, I'm modifying an existing design that has 3 different power inputs: Ext power - ~12VBatteries - 6 x AAUSB - 5V The design currently just diode 'OR's' the supplies together before the main switching...
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 ArticleAbout the outputvoltage accuracy of ADP2119
Hi all, I have a question on ADP2119.Regarding the ouput voltage accuracy of the fixed output version,Do you have any data on it?I want to achieve1.0 output voltage within 3 % errors.So It would be...
View ArticleADP1706 Ripple problem
I am a newbie power supply designer.I have 44 mV of ripple (from my switching regulator) going into my linear regulator at f=1MHz. I have Cin=Cout=4.7uF. The linear regulator is not reducing the...
View ArticleADN2830 Monitor Photodiode Current
Dear Sir,While using ADN2830, we found the PD current from laser is lager than 2000 uA. However, the photodiode current ADN2830 can receieved is less than 1200uA. Than, how can we use the ADN2830 to...
View ArticleADP198 max voltage on EN pin? Can it exceed Vin?
The ADP198 specifies a Vin range of 1.65v to 6.5V. The datsheet lists the threshold voltages for the logic levels that control EN, but I don't see anything that relates the level of EN to Vin. Can the...
View ArticleDefault on power switch
I want to design an easy power switch that is on by default, but I need the ability to turn the power off.Is this posible with a few mosfet's? thanks for any help
View ArticleADP198 Reverse Polarity Protection
Inquiry from customer wanting to better understand the ADP198 reverse polarity protection: The ADP198 is used with 3.3V at the input and would like to apply a 5V at the output and activate the reverse...
View ArticleADP5090 output power rating
Hi May I know the power rating for ADP5090-2-EVALZ that is a Evaluation Board with Solar Harvester ??if we setting 3.3Vout , how much the iout ??
View ArticleADM1278 0XD4 SIMULTANEOUS bit
Hello my customer request the ADM1278 0xd4 that update as below the table.after checking, I confuse the "SIMULTANEOUS" function! what is the SIMULTANEOUS functionDoes any impact for this updated ??...
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ADP1741ACPZ-R7 dropout voltage
Hello, For analog Devices ADP1741ACPZ-R7 the datasheet specifies the dropout voltage for conditions when Vout is 1.8V or higher as 280mV max on page 3 (although footnote 4 actually says for when Vout...
View ArticleADP1055 Evaluation Board For 7.4KW Solution
Dear Sir:ADP1055 Evaluation Board now only have input 38-60VDC,output 12V, 20A specification,ADI will propose provide input 400VDC,output 60V, 125A DC-DC Digital Power total solution? I am very...
View ArticleAD8280 - Hysteresis on OV, UV and OT Trip Points
Hello, I'm using the AD8280 in a Lithium Polymer Battery Pack Monitoring System as safety device (together with the AD7280A device used as main monitoring device).While testing the system functionality...
View ArticleIs there a license expiration period for ADIsimPE ???
Is there a license expiration period for ADIsimPE ???
View ArticleADP1614 as a LED Driver
Hi All, My customer investigating low cost LED driver IC.Is it possible to use ADP1614 as a LED Driver with its adjustable current limit function?If yes, can I obtain reference circuit for 5 white LEDs...
View ArticleBUCK and LDO which are not used in ADP5052 are safely set to disable.
Dear all, Currently, my customer uses ADP5052 with FPGA. They may not use a part of BUCKs or LDO.How is PIN for BUCK and LDO which are not used handled? Please tell me the manners of setting these to...
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