Other Parts Discussed in Thread: TPS7A83A
Hello
The TPS7A8300 is one of our favorite LDO's due to the combination of good PSRR, low noise and small drop out voltage all together with a small package and good thermal performance.
However lately we see an increased demand from customers for a very small products, especially on the height. This leads to my question about the LDO's output capacitor selection:
The datasheet recommends 22uF cermaic cap as a minimum. The shortest 22uF cap I have found is 1.6mm. I need the cap to be 1mm max. For this reason I would like to use 2 or 3 GRM188Z71A106KA73D in parallel. The output voltage is typically 3.3,1.8,1.2,0.9 V (mostly used to power TI DAC's)
Note: due to the temp. of the system, we use only X7R or higher type.
Can you please advise about the LDO performance with those output capacitors? are 2 enough or we need 3? Can you simulate this?
Thanks