DLPA2000
ZHCSCO5B –JUNE 2014–REVISED FEBRUARY 2018
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9 Power Supply Recommendations
The DLPA2000 is designed to operate from a 2.3-V to 6-V input voltage supply or battery. To avoid insufficient
supply current due to line drop, ringing due to trace inductance at the VIN terminal, or supply peak current
limitations, additional bulk capacitance may be required. In the case ringing that is caused by the interaction with
the ceramic input capacitors, an electrolytic or tantalum type capacitor may be needed for damping. The amount
of bulk capacitance required should be evaluated such that the input voltage can remain in specification long
enough for a proper fast shutdown to occur for the VOFS, VRST, and VBIAS supplies. The shutdown begins when
the input voltage drops below the programmable UVLO threshold such as when the external power supply or
battery supply is suddenly removed from the system.
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