TPS748A-Q1: Output voltage setting

Lei Tao Tao

Part Number: TPS748A-Q1
Other Parts Discussed in Thread: TPS748A, , TPS74801

Hello,

Normally，LDO output Vout = Vfb*（R1+R2）/R2，there is no description in the datasheet, dose tps748a Vout be set by Vfb, R1, R2?

And, is there any output fixed version, i.e 1.8V, 1.1V, 3.3V.

+1 Erin Thibeault over 1 year ago

Hi,

TPS748A-Q1 output voltage is set by a resistor divider and VFB, exactly as you described: Vout = VFB*(R1+R2)/R2

This is an adjustable output only device.

BR,

Erin

0 Lei Tao Tao over 1 year ago

Hello,

Thank you for supporting!

Is there any recommened range for selecting R1 and R2, to TPS74801 the R2 must be<4.99KΩ for maximum accurancy.

0 Erin Thibeault over 1 year ago in reply to Lei Tao Tao

Hi Lei,

I revived the datasheet and it doesn't look like there is a recommended range for R1 and R2.

BR,

Erin

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