# 2.3V minimum input voltage for 3.3V LDO

I was looking through 3.3V LDOs and I came across this

https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/9115697/

It's a 3.3V LDO yet the minimum input voltage is 2.3V. How can that be possible?

• The tables/data in these distributer sites often contain errors. What does the datasheet say ? – Mike Jun 7 '19 at 21:01
• That regulator is probably part of a range or regulators with different fixed output voltages - some of them possibly as low as 1.5V and 1.8V. – brhans Jun 7 '19 at 22:28

The minimum VIN must meet two conditions: $$\V_{IN} \geq \$$ 2.3V and $$\V_{IN} \geq (V_R + 3.0%) + V_{DROPOUT}\$$.