• RE: ADM7171 Enable pin timing


    The moment EN hits falling threshold, it instantly turns off the output. 

    For your two other questions, no, they are not dependent on the SS capacitor or output voltage.

  • ADM7171

    请问ADM7171数据表里面的headroom voltages是什么意思

  • ADM7171 Probelm


    We are using ADM7171 adjustable regulator from 5.5V (input) to 5.0 Volts (Output). Recently we got a new batch of IC's and all the IC's are not regulating the output. Suppose we give 5.0 Volt input it gives output of 5.0 - VDO(dropout Voltage)…


    Hi all,

    In the datasheet at ADM7171,
    Figure 63 to Figure 65 show junction temperature calculations for different ambient temperatures, power dissipation, and areas of PCB copper.

    I wonder that why total power dissipation data in Figure 64 and Figure…

  • ADM7171 EN pin short-mode


    Is there possibility that ADM7171 EN pin could be shorted to GND due to an internal protection circuit?

    An our customer saw voltage of the EN pin was 0V even though their processor connected to ADM7171 drove High state. So They were concerned if…

  • ADM7170, ADM7171, ADM7172 soft start

    Is the soft start cap used to bypass the reference?

    Is there a max SS cap I can use?

    The description says also that SS needs to be left open when not used, but could the SS pin be used also as a REF in or Track function to lower the output voltage?…

  • Power Dissipation of ADM7170, ADM7171 and ADM7172.

    The data sheets for the ADM7170, ADM7171 and the ADM7172 all list the same thermal resistances even though their rated currents are 0.5A, 1.0A and 2.0 respectively. How can this be so if their maximum junction temperatures are all the same?

  • ADM7171 En pin not connected to VIN

    Dear Sir/Madam,

    I am using the ADM7171 in the following configuration VIN=2.5V and VOUT=1.8V.

    The EN pin is not tied to VIN. The EN pin would be connected to a reset network having

    a maximum voltage of +3.3V From the datasheet i can see a minimum for…

  • ADM7171 dropout for output voltages below 2.3V (adjustable version)


    In the ADM7171 datasheet the typ/max dropouts are listed in the tables, followed by some dropout plots. There is however a note that says that these dropout specifications only apply to voltages above 2.3V. Can you provide additional dropout, PSRR…

  • what happen with the fix output voltage adm7171 ?

    Hi all,

    I used the the both model, the fix(3.3V and 5.0V) and adjustable output voltage with the same footprint, the enable signal in common. but, the adjustable one worked, the other didn't. the adjust one give the expected output while with the fix…