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LP5900

SNVS358R – JULY 2005 – REVISED JUNE 2016

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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. It should also be noted that the ESR of a typical tantalum will increase about

2:1 as the temperature goes from 25°C down to

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

8.2.3 Application Curve

Figure 17. Enable Start-up Time, IOUT = 100 mA, VOUT = 2.8 V

9 Power Supply Recommendations

The device is designed to operate from an input voltage supply range between 2.5 V and 5.5 V. This input supply

must be well regulated. To ensure that the LP5900 output voltage is well regulated, the input supply must be at

least VOUT + 1 V.