• LT1963AES8-3.3

          我在LT1963AES8-3.3使用时遇到如下问题:目的是通过STM32L475 MCU的I/O口(PSW_1)控制LT1963AES8-3.3的SHUT 管脚来控制LT1963AES8-3.3的输出。PSW_1配置为开漏输出,内部无上拉,外部接1M的上拉电阻。当PSW_1 为1时,LT1963AES8-3.3输出3.3V ,正常。当PSW_1 为0时,LT1963AES8-3.3输出不是0V,而是1.4V,找不到原因。
  • LT1963AES8-3.3


            我在使用LTLT1963AES8-3.3芯片时,遇到如下问题。电路的目的是通过STM32 MCU单片机的I/O控制LTLT1963AES8-3.3的SHUT 管脚,STM32 MCU单片机的I/O (PSW_1)配置成开漏输出,内部无上拉,外部接1M的上拉电阻,当PSW_1为1时,可输出LTLT1963AES8-3.3可输出3.3V电平,当PSW_1为0时,LTLT1963AES8-3.3可输出不是0V,而是1.4V,找不到原因。请帮分析下,电路图如下:

  • LTC3556: can it handle the following 3.3/3.3/5V configuration?

    Good day!

    1. Can LTC3556 handle 3.3V/400mA + 3.3V/400ma + 5V/200mA configuration?
    The datasheet clearly states Vout for Buck-Boost regulator (5.5V max), but it is not completely clear about  max Vout for 2 buck regulators.
    Max P is ~5W (with battery charging…

  • RE: ADP2370ACPZ-3.3-R7

    Hi Rainer,

    Can you provide more information like what is the input voltage and where is it coming from? You may want to consider that the limitation of power delivered at output can be related to power available at the input. Another thing to consider…

  • ADG901 with 3.3 V Supply

    Has anyone tried using the ADG901 with a 3.3 V supply and signal levels?

    The maximum VDD to ground rating is 4 V. I just want to use this for some prototyping and just power it directly from the microcontroller board I'm using.

  • RE: LT1460KCS3-3.3#PBFG

    Hi 4source,

    Apologies for the delayed response. PBFG is not a valid suffix for the LT1460 family. The LT1460 product page has all the valid part numbers listed in the ordering guide under the Sample and Buy section here .



  • LT1761IS5-3.3#PBF


    we are using this part for one of our RTC charging section Vbat is 12V when the LDO is charging the RTC capacitor during PowerUp and then a  75-ohm load  Resistor is added Parallel to LDO o/p  Manually. We are seeing a voltage dip across the LDO o/p it…

  • RE: Crash in SigmaStudio 3.3

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • trouble using LT3066EMSE-3.3

    I try to use fixed 3.3V variant of LT3066. More precisely: LT3066EMSE-3.3 and somehow I get Vin to Vout.

    My schematics is as follows:

    Can you tell what is wrong with current schematics that I get 12V on OUT_1 and OUT_2 pins if I connect 12 V to IN_1…

  • Sigma 3.3 Promise... broken?

    I could have sworn someone promised that in Sigma 3.3 the on-screen connection wires would stay put when importing a hirearchy board into a design.  When creating a circuit, especially a complex one in which you must use "Insert Point" to keep routes clear…