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tlv1117

sheetal verma1
Intellectual 600 points
Other Parts Discussed in Thread: TLV1117

 using TLV1117IDCYR to generate 1.6 V output from VCC=5Volts input

But even on changing the values of R1, R2 as per formula vout=vref(1+r2/r1) +(Iadj *r2) not able to get 1.6V output.

Please find enclosed circuitTLV1117-IDCYR doubt.docx

  • 0
    TI__Mastermind 22610 points
    TLV1117 has Minimum load current requirement of 5mA

    Using the formula in the datasheet, and ignoring Iadj, the R values (R130 (top)=1.5K and R131 (bottom)= 15k) will not give 1.6V:
    Vout = ( Vref x ( 1 + (R131 / R130) ) ) = ( 1.25V x ( 1 + ( 15k / 1.5k) ) ) = 13.75V

    I would suggest that R130 = 249 ohms, and R131= 69.8 ohms
    Vout = ( Vref x ( 1 + (R131 / R130) ) ) = ( 1.25V x ( 1 + ( 69.8 / 249) ) ) = 1.60V