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Showing 55 results View by: Thread Post Sort by

  • LMP8640: Output behaviour when Rload < Rsense

    Part Number: LMP8640 Other Parts Discussed in Thread: INA293 , INA281 Using Spice model found on the forums, the output decreases as the load is decreasing around and below Rsense. Hereafter is the simulation schematic and a plot at Rload=Rsense: …

  • LMP8640: DDR Nvdimm

    TI Thinks Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: INA199 , Hi Please suggest products suitable for DDR Nvdimm Which of these two is suitable for LMP8640 & INA199 common mode :12V Rsense: 2m ohm Iout: 4.2A ADC: input 0~3v

  • LMP8640: LMP8640MKE-HNOPB

    TI Thinks Resolved
    Part Number: LMP8640 Hi, We purchased this part and encounter some issues. Please see the attachment for the detailed problem and provide the feedback and solution. PowerBoard_VD단잔류전압확인.pptx
    • Answered

  • LMP8640: What is the minimum current sensing?

    Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: INA293 , INA190 , INA186 Hi ! What is the minimum current sensing in the attached circuit? Can you detect a current of 1[mA]? Thanks for the answer.
    • Resolved

  • RE: LMP8640: offset current due to VOL limitations

    Hi Javier, one question more regarding the LMP8640: What would the max. voltage on its inputs if there is no current/voltage applied to Rsens and LMP8640 is powered? For example the LMP8640 is used in high.side configuration but Vbat is not available…

  • LMP8640: LMP8640

    TI Thinks Resolved
    Part Number: LMP8640 I am using LMP8640 having gain = 50, for current sensing. It gets saturated if current is more tham 0.4 A through the current sensing resistor (0.05 Ohm sensing resistor is used). What could be the possible reasons? I am using it…
    • Answered

  • LMP8640: 25% gain error in simple application circuit

    Resolved
    Part Number: LMP8640 I have a simple application of the LMP8640MK-T (Gain of 20). (Snippet below). I have a a sensor resistor of 50mOhm w/ a kelvin connection. I notived that the apparent gain of the circuit is roughly 25 instead of 20. I Ran a constant…
    • Resolved
    • Answered

  • LMP8640: PSpice model

    Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: LMP8645 Can you please provide the PSpice model for LMP8640? It has to be this specific part number - similar devices are not accepted by this customer. Thank you!
    • Resolved
    • Answered

  • LMP8640: About Minimum Output voltage

    Resolved
    Part Number: LMP8640 Hi Team, We have two questions. ----------- [Q1] We are evaluating LMP8640HV-H (H version). Then, VOUT is around 75mV to 150mV when 3pin and 4pin are shorted (VCM=0V). Is this behavior right? <Result> Unit1:75mV…
    • Resolved

  • RE: LMP8640: Small Vsense specification

    Hello Satoshi, The LMP8640 datasheet includes an output versus input curve for smaller voltages in Figure 14 (attached below). In addition, the datasheet specifies the maximum (worst-case) "Minimum Output Voltage" (or swing to ground). So while I would…
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