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  • TPS7A94: About ULVO input pin ( pin 3) maximum operational voltage

    Part Number: TPS7A94

    Tool/software:

    According to the TPS7A94 DataSheet  chapter 6.5 ,the Input supply UVLO maximum voltage is 1,7V.

    Absolute maximum rating for this pin is 6V ( but it's not max, operational voltage I guess) and info in the chapter 6.3…

  • TPS7A94: Layout and Schematic review

    Part Number: TPS7A94

    Tool/software:

    Hi All,

    I needed a review for my schematic and layout (images attached). I want the output of the LDO to be 0.6V with a supply voltage of 5V. (As the output voltage is less than 1.2V, the current limit is set to 100…

  • TPS7A94: 2.5V to 1.8V conversion

    Part Number: TPS7A94

    Tool/software:

    If Vout should be 1.8V, what is the value of RFB_PG(BOTTOM) (kΩ) and RFB_PG(TOP) (kΩ) for ICL SETTING (100%)? Kindly explain with formula.

  • TPS7A94: Question about Output Spectral Noise Density Curve

    Part Number: TPS7A94

    Tool/software:

    Hello,
    This is Kwonjoon Lee from South Korea.

    I would like to ask about output spectral noise density curve of TPS7A9401.

    (Detailed Question)

    1. In Figure 6-15, there is a huge noise peaking around 1MHz.
        I would like…

  • Need help selecting 12VDC to Vout : 4V-5V (+3.3VDC)@200mAmp supply

    Part Number: TUSB1104
    Other Parts Discussed in Thread: TPS7A94, TPS561246, TPSM861252, TPSM82912, TPS62912

    Tool/software:

    Dear Sir/Madam,

    We are developing FMC card using TI Redriver TUSB1104 for our 10 Gbps, USB3.2, Gen2, 2x2 mode IP core testing. Host…

  • TPS7A90: Parallel LDOs

    Part Number: TPS7A90
    Other Parts Discussed in Thread: TPS7A94, TPS7A92, TPS7A91

    Tool/software:

    Hello team,

    My customer wants to use 2 TPS7A90 by parallel.

    However, there is no device for TPS7A90 in https://www.ti.com/tool/download/PARALLEL-LDO-CALC 

    So…

  • TPS7A94: Solder paste example

    Part Number: TPS7A94

    Tool/software:

    In the TPS7A94 datasheet, the solder paste example shows that solder paste covers two thermal vias.
    (The blue arrows point what I see) 

    Is it necessary for accurate operation? Is it need that the vias filled by solder…

  • TPS7A94: measurement condition of the electrical characteristic in the datasheet

    Part Number: TPS7A94

    Tool/software:

    Hi team,

    The EVM of the device has the shield. So could you tell whether the shield is used when you measure the electrical characterisitcs in the datasheet like PSRR and so on?

    Regards,

    Noriyuki Takahashi

  • TPS7A94: Output short circuit protection and its impact on input rail

    Part Number: TPS7A94

    Tool/software:

    Is there output short circuit protection like brickwall etc on TPS7A94. Datasheet does not clearly mention about impact on V_in in case of short/overload on V_out. Section 8.1.1  Output Voltage Restart (Overshoot Prevention…

  • TPS7A94: the definition VOUT(NOM), NOMINAL OUTPUT VOLTAGE (V), VOUT(target)

    Part Number: TPS7A94

    Tool/software:

    Hi team,

    There are several simliar terms in the datasheet, e.g.  VOUT(NOM), NOMINAL OUTPUT VOLTAGE (V), VOUT(target).

    Could you tell the definition of each term?

    Regards,

    Noriyuki Takahashi

  • LP5907: Suggestion for filtering noise from supply

    Part Number: LP5907
    Other Parts Discussed in Thread: TPS7A94, TPS7A96

    Tool/software:

    Hello,

    I have a 5V supply from a System on Module (SOM) that I need to use for a CMOS camera sensor in a project. The sensor requires the 5V supply to have a noise level…

  • TPS7A94: TPS7A94 Ic part required in WEBENCH power designer

    Part Number: TPS7A94

    Tool/software:

    HI team,

    TPS7A94 Ic is not available in webench power simulation library.

    Is there any other way to simulate this part in webench power designer.

  • TPS7A94: The land pattern recommended for the TPS7A9401DSCR

    Part Number: TPS7A94

    Tool/software:

    The TPS7A9401 datasheet recommends a square thermal pad, however we have other devices in our library, which use a similar package with irregular thermal ground pins and the recommended land pattern uses an irregular…

  • TPS7A49: Clock Buffer input

    Part Number: TPS7A49
    Other Parts Discussed in Thread: LMX1214, TPS7A94

    Tool/software:

    Hi Team,

    As per the above image we are feeding 12V from external and generating 6.5V. 

    from 6.5V old circuit has P/N: TPS7A4901 and evaluation board has (P/N: TPS7A9401DSCR…

  • TPS7A39: Do you have an LDO with less noise?

    Part Number: TPS7A39
    Other Parts Discussed in Thread: TPS7A47, TPS7A94, TPS7A30, LMP7731, TLV2460

    Tool/software:

    Hi, I'm designing a very low noise amplifier circuit.

    Do you have something better than TPS7A39?
    I need to regulate negative and positive…

  • JFE150: Understanding the JFE150 ultra low noise application note

    Part Number: JFE150
    Other Parts Discussed in Thread: OPA202, TINA-TI, TPS7A94, , JFE2140

    Tool/software:

    Hello everyone, I am wokring with the JFE150 and I have a couple of questions about the Application Note from Chris Featherstone.

    I tried to reformulate…

  • TPS7A94: Output voltage is higher than programmed be reference resistor Rnr/ss

    Part Number: TPS7A94

    Tool/software:

    Hello, I have common design to use for different voltages. Some of them above 1.7V (minimum input voltage) and all output voltages observed as expected. Lowest working tested 1.8V.. However when I supply lowest voltage…

  • TPS7A94: PMIC or Discrete regulators

    Part Number: TPS7A94
    Other Parts Discussed in Thread: TPS7A14, TPS7A53B

    Hi, I have a board I'm working on that requires the following power rails:

    19V @ 2A

    5V @ 3A

    3V3 @ 1A

    1V05 @ 1A

    I'm trying to figure out whether I should be using 4 discrete regulators…

  • TPS7A94: Fast start up control

    Part Number: TPS7A94

    The datasheet for the TPS7A94 reports that the fast charge up (here called soft-start) supplies extra current to ramp up the reference until the reference reaches 93% of the intended Vout value.  However, there does not seem to be…

  • TPS7A94: Ferrite-bead to improve noise performance at 1 MHz

    Part Number: TPS7A94
    Other Parts Discussed in Thread: TPS7A96

    Hi,

    In data sheet to improve noise vs frequency performance at 1 MHz, it is suggested to use a Ferrite-bead Impedance = 49 @ 1MHz followed by a 1 uF capacitance. Can you please suggest some…

  • TPS7A87: product recommendation

    Part Number: TPS7A87
    Other Parts Discussed in Thread: TPS7A94

    Hi,

    Please recommend a product that meets the following requirements:

    For 3.6V to 1.2-3.3V, current 500mA, PSRR requires 1-2MHz can have 50dB, Dropout at or below 200mV, the thermal resistance…

  • TPS7A94: Design Review request - 4 instances of LDO, one with adjustable Vout

    Part Number: TPS7A94

    TPS7A94 - four instances of this low noise LDO in my design.

    I'm coordinating design reviews through Peter James Miller

    Please review my design. Schematic is shared with Peter.

    Page 2:
    TPS7A94 - 5V to 3.3V

    Page 3:
    TPS7A94 - 5V to…

  • TPS7A94: schematic review, especially input & output capacitors

    Part Number: TPS7A94

    Hi team,

    Could you review three schematics as below? Especially, could you review the input and output capacitors? There are concerns that capacitor value cosiderign DC-bias can't meet device recommendation. 

    Designator Va…
  • TPS7A94: NR capacitor noise

    Part Number: TPS7A94
    Can you please say if the NR capacitor input is sensitive to noise and specifically one induced by voltage generated by the capacitor during vibration (due to its piezoelectric response if it is a ceramic capacitor)
    For example,…
  • TPS7A94: Is Vout Adjustable through the NR/SS pin? Is NR/SS continuously sampled?

    Part Number: TPS7A94
    Other Parts Discussed in Thread: TPS7A96

    Hi,

    On a current design, I would like to move from our simple LDO to the TPS7A94. We are concerned with noise, and the TPS7A94 appears to have excellent PSRR.

    Our requirements for Vout include…

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