Datasheet Maxim MAX1818

Click here for production status of specific part numbers. MAX1818 500mA Low-Dropout
Linear Regulator in SOT23 General Description The MAX1818 low-dropout linear regulator operates
from a +2.5V to +5.5V supply and delivers a guaranteed
500mA load current with low 120mV dropout. The highaccuracy (±1%) output voltage is preset at an internally
trimmed voltage (see Selector Guide) or can be adjusted
from 1.25V to 5.0V with an external resistive divider.
An internal PMOS pass transistor allows the low 125μA
supply current to remain independent of load, making this
device ideal for portable battery-operated equipment such
as personal digital assistants (PDAs), cellular phones,
cordless phones, base stations, and notebook computers.
Other features include an active-low open-drain reset
output that indicates when the output is out of regulation,
a 0.1μA shutdown, short-circuit protection, and thermal
shutdown protection. The device is available in a miniature 800mW 6-pin SOT23 package. Applications
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Cellular and Cordless Telephones …