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LTC3124, LTC4415

Hello,I have a backup power circuit below that I like your input on it.  LTC3124 to boost the voltage to 5V, and LTC4415 Oring Diode to switch to back-up power. Thank you in advance,Dino

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How to handle the pins related negative output on ADP5071?

Hi, My customer use ADP5071 and would like to know how to handle VREF, COMP2, FB2 and SW2 if they don't need negative output ? Keiichi Okuji @ ADKK

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LT3439

Hi. I use DC/DC transformer driver LT3439 and use transformer: Part Number: 750315213 (Wurth Electronic) with coefficient 1:1. Input and output voltage is 15V. Output current is 0.2A. And driver is...

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I need ref design for LTC3536 Vin 3V-4V2 and Vout 5V@700mA, DS is unclear...

Hi,DS is ok for 3V3 output design but 5V design is limited to Vin 4v2-5v5.I need to do Vin 3V-4V2 and Vout 5V@700mA.Thanks for your help.

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LT3952 to power 450mA 42V LEDs with 4000:1 PWM

Hi I am trying to design a LED driver circuit to drive string of two LEDs at 450mA and 42V (constant current - voltage is maximum from LED specs, in practice it is around 39-40V). The voltage on input...

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ADUM5230 "output short-circuit pulsed current" "sourcing" and "sinking"

I wants to use ADUM5230 with AUIRGB4062D1 in new device (AC 3-phase  motor converter, 100...350V in dc power line).  Max switching frequency: 20 kHz. Gate capacitance: about 1,5 nF   Questions: 1. Can...

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LTC free samples not available

Hello, Since the day ADI acquired LTC, why ADI stopped giving free samples for some of the LTC ICs (LTC3525, LTC2942)?Any help in this regard will be useful. Thank you,Nahit

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ADUCM4050 ADC power supply

Hi EZ, I am currently doing a schematic using the ADUCM4050, and his internal ADC, and I would like to know few stuff : Is that possible to have Vbat_ADC set to a different value than the other Vbat of...

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LTC2977 Vout enable pin behavior without power supply

Hallo,    I would like to ask about Vout Enable Output Pin state when LTC2977 is not powered up. Does it behave as pull-down (weak or strong) or is simply floating. The output circuit schematics will...

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Very precise 54V DC power supply

I need to build a very stable DC power supply with a variable output (51 to 56 VDC) at a very low current output ( 100 mA). But the driff and stability needs to be very less than 5 mV. The circuit will...

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LTC4020 no-load stability

HiWe are using the LTC4020 to charge a lead-acid battery and are having problems with no-load stability of the DC-DC converter. We see this happening during NTC events, where the battery gets...

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LTC4020 NTC hysteresis behaviour

We are using the LTC4020 to charge a lead-acid battery, with the NTC pin used to enable charging within temperature range of the battery.The LTC4020 has an upper and a lower voltage limit on the NTC...

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ADP5090 with dual parallel PV

Is it possible to have 2 PV's in parallel with the ADP5090?

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About the input of ADP5091

Hi, thanks to anyone . I have a question about the input of ADP5091.     I have a PV whose mppt is 4V and 700mA. If I put a zener diode between the PV and 5091, can I connect it directly?Is current...

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How to use the sync pin of the LTC3805

Hello People, I'm using a LTC3805 in a sepic design and I have some questions regarding the sync input. I have a Vin of 19V to 24V, Vout of 20V and -20V at Iout(max) of 260mA and -200mA. I use two...

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How to solve LTC4446 problems?

LTC4446 is used as a driver for high-side and low-side outputs. Load is inductive (200uH), Vin=60V, Vcc=12V.LTC4446 fails to operate after several hours. The symptoms are, in a case, excessive current...

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LT8315 non isolated buck application

I am trying to simulate non isolated buck converter with LT8315 ic given in  datasheet as  application example of LT8315 in LTspice software. the output is not regulated and does not give 12 volts as...

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ADP5091的电阻配置问题

为了在5091上使用锂电池,我做了如下配置,使得充电电压小于4.2V,放电电压高于2.7V Rpg1=6.2M Rpg2=3M        Vpg=3.06VRte1=5.6M Rte2=3.3M      Vte=4.08VRbk1=6.8M Rbk2=3.0M     Vbk=3.25Rsd1=6.8M Rsd2=3.9M     Vsd=2.7V...

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LTC4368 weak gate drive

I have implemented the LTC4368 with the following configuration:VIN(MIN) = 40VVIN(MAX) = 52VOCP = 5A Nominal input voltage is 48V. This is part of a larger system, however all that is currently...

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LT3060-5 ESD rating

Hi all,after working through several datasheets of LDOs by Linear Tech. I discovered that none of them included any data regarding ESD rating or protection. Are LDOs by Linear ESD protected?For...

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