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TPS763-Q1: Vout Deviation at Vout = 5.7V

Paul Kim
Intellectual 1430 points
Part Number: TPS763-Q1
Other Parts Discussed in Thread: MULTIPKGLDOEVM-823

Hi team

customer wants Vout = 5.7V at Max Iout 80mA with Vout deviation = +- 3.5%.

he will use TPS76301-Q1 for adjustable Vout.

D/S says Vout deviation = +- 3% for 5V <= Vout <= 1.5V at 100mA for entire temperature range as below.

My question is D/S also can ensure +- 3% for Vout = 5.7V at 100mA for entire temperature range ?

  • 0
    TI__Guru 55940 points
    Hi Paul,

    The datasheet specification is only up to 5 V for this device. I am looking to see if we have any data on how accuracy behaves at higher output voltages. Please allow me some time to look into this.

    Very Respectfully,
    Ryan
  • 0 in reply to Ryan Eslinger
    TI__Intellectual 1430 points

    Hi Ryan

    customer's Min VIn is 6V at Iout = Max 100mA.

    if Vout is in the range of 5.5V ~ 5.7V at Iout = 100mA, we can still ensure Max Dropout below 200mV ?

    D/S just sat TPS76350 case as below.

    So, I hope you also check Max Dropout for Vout = 5.5V ~ 5.7V at 100mA.

    let me expect BU's quick response. 

  • 0 in reply to Paul Kim
    TI__Guru 55940 points
    Hi Paul,

    While it is possible to have an output voltage above 5 V for the adjustable device, the TPS763-Q1 family is only tested and specified for a maximum output voltage of 5 V. While the maximum dropout is not specified for a 5.7 V output, if you look at the dropout specifications for the fixed output voltages that are specified, you will notice that the maximum dropout is decreasing as Vout increases. As such, 200 mV should be enough headroom (Vin - Vout) in order to ensure that the output is regulating.

    As your application is outside of where TPS763-Q1 is tested and specified, prototyping is highly encouraged. MULTIPKGLDOEVM-823 can be used as a first pass prototype board for this device.

    Very Respectfully,
    Ryan