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  • LM27761: What is wrong with my circuit?

    TI Thinks Resolved
    Part Number: LM27761 Hi guys, image of circuit attached. C50,53 = 4.7uF C55 = 1uF R2 = 105K R3 = 100K C46 = 2.2uF As per equation 5; -1.22 * (105K + 100K)/100K = -2.5 Why wont this circuit output anything? I have tried 3 different chips all new. I can…
    • Answered

  • LM27761: Support 3Vin, output -4.2V

    Resolved
    Part Number: LM27761 Hi team, Does LM27761 support 3Vin, output -4.2V/50mA? What voltage will the CPOUT be under this case? Thanks and Best Regards, Will
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    • Answered

  • LM27761: Inverter Operation at 10mA

    Resolved
    Part Number: LM27761 Other Parts Discussed in Thread: LM2776 Hello, We are using LM27761 (replaced in an old design containing LM2776 which is out of stock) to convert as below: Vin = 5V Vout = -4.9 to -5V is acceptable Output Current = 10mA As per the…
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    • Answered

  • LM27761: How to understand "2.5-Ω Inverter Output Impedance" ?

    Resolved
    Part Number: LM27761 Hi Team, LM27761 have 2.5-Ω Inverter Output Impedance parameter. There have some questions need to confirm: 1. Is 2.5-Ω Output Impedance a pull-down resistor? 2. Is 2.5-Ω Output Impedance a fixed value? Does it correspond…
    • Resolved
    • Answered

  • LM27761: output voltage

    Resolved
    Part Number: LM27761 Other Parts Discussed in Thread: LM4766 , Hi Support Team, Could you please let me confirm how to set the output voltage of the LM4766? I'd like to make the output voltage as close as possible to -5V with an input voltage of 5V.…
    • Resolved

  • LM27761: design review

    TI Thinks Resolved
    Part Number: LM27761 Hi TI I am preparing use LM27761DSGT to design LDO circuit, so I have some question about LM27761DSGT: 1. LM27761DSGT first use a charge pump convert Vin to -Vin, and then use a LDO convert -Vin to Vout? 2. In my design, Vin=3.3V…
    • Answered

  • LM27761: Schematic review for LM27761

    Resolved
    Part Number: LM27761 Hi team we are using LM27761 to generate -5V from 5.5V. I have attached the image of the connections for the regulator. May I request you to review the connections Any package consideration for CPOUT and C1+,C1- capacitors? -- Regards…
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    • Answered

  • LM27761: Query regarding LM27761 LDO regulator

    Resolved
    Part Number: LM27761 Hi team, We are working on a new design where the LDO requirement is Input Voltage : 5V Output Voltage : -5V Current : 200mA And we are planning to use LM27761 LDO regulator. Since this device is being operated at maximum input(5…
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    • Answered

  • LM27761: Land pattern

    Resolved
    Part Number: LM27761 Hi E2E, Good day. Please help provide the LM27761 WSON (DSG) land pattern since the information is not included in the datasheet. Thank you. Regards, Carlo
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    • Answered

  • LM27761: Leakage current on pin VFB

    Resolved
    Part Number: LM27761 The spec lacks a line item for leakage current into pin VFB; all that is specified for picking values for R1 and R2 external resistors is to assure that R2>50kOhms. I am concerned that an existing design that is using R1 and R2…
    • Resolved

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