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TPS57140-Q1: Reference voltage discrepancy within the TPS57140-Q1 datasheet

Part Number: TPS57140-Q1
Other Parts Discussed in Thread: TPS57160-Q1,

Good morning,

I am reviewing using the TPS57140-Q1 ( or TPS57160-Q1) in an application where I require a relatively tight controlled voltage for the 1v2 and the 3v3.  The TPS57140-Q1 is attractive due to the datasheet stating a 1% accurate reference. However, aspects of the datasheet seem to be in conflict.

Page5: 

Voltage reference:   

MAX 0.808:

TYP: 0.8

MIN: 0.792

This produces a 0.8V +-1%

However, page 14:

7.3.5 Voltage Reference The voltage-reference system produces a precise ±2% voltage reference over temperature by scaling the output of a temperature-stable band-gap circuit.

a +-1%  (using 0.1% resistors, aging and temperature coef) produces a possible worst-case voltage of:   3.2430 -> 3.3578  (also: 1.1842 -> 1.2160) 

while +-2% (using 0.1% resistors, aging and temperature coef) produces a possible worst-case voltage of:   3.2102 -> 3.3910    (also:  1.1722 -> 1.228)

Could the tolerance of the TPS57140-Q1  be confirmed:  1% or 2%.

The reason this is key is a tolerance stackup involving the TPS3703E4080  and an external resistor divider to permit testing.