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LP8900

SNVS542E – MAY 2008 – REVISED JUNE 2016

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Tantalum capacitors are less desirable than ceramic for use as output capacitors because they are more

expensive when comparing equivalent capacitance and voltage ratings in the 1-µF to 4.7-µF range. Another

important consideration is that tantalum capacitors have higher ESR values than equivalent size ceramics. This

means that while it may be possible to find a tantalum capacitor with an ESR value within the stable range, it

would have to be larger in capacitance (which means bigger and more costly) than a ceramic capacitor with the

same ESR value. The ESR of a typical tantalum increases about 2:1 as the temperature goes from 25°C down to

–40°C, so some guard band must be allowed.

9.2.3 Application Curves

1 to 200 mA

Figure 13. OUT1 Load Transient

0 to 200 mA

Figure 14. OUT1 Load Transient

Figure 15. Load Transient

200 mA per channel

Figure 16. Line Transient