5V to 5V precision voltage reference

[prescott2006]

Is there any IC that can output a precision 5V from a 5V supply?

 

[KJ6EAD]

There are plenty. Here's one: **broken link removed** and here's another: **broken link removed**.

 

[keith1200rs]

Yes, but assuming the input 5V supply can be above 5V as well as below, then you need a boost regulator followed by a precision voltage reference. The MAX710/711 has a switcher and LDO in one package but the tolerance of the regulator is not really "precision".

Keith.

 

[KJ6EAD]

You can stack two 2.5V references (use the output of the first to ground reference the second).

 

[IanP]

Precision voltage reference will always require the input voltage to be at least 2-3V above the output voltage ..
So, first boost the voltage up (eg. charge pump) and then drop it down to exactly 5V using a precision voltage reference ..

IanP
:wink:

 

[erikl]

There are plenty. Here's one: **broken link removed**
and here's another: **broken link removed**.

Not really: LM4120-3.0V, 3.3V, 4.096V and 5.0V Unless otherwise specified VIN = VOUT + 1V, ILOAD = 0
LM4050 is a Z-diode-like Shunt Voltage Reference, needing current from a higher voltage source.

 

[KJ6EAD]

Unless otherwise specified VIN = VOUT + 1V, ILOAD = 0
LM4050 is a Z-diode-like Shunt Voltage Reference, needing current from a higher voltage source.

I see that now. Unhelpful -1 for me.:sad:

 

[FvM]

Some references have dropout voltages down to 200 mV, e.g. AD1585, but still a positive quantity.