Product Summary

The MAX1806EUA18+T is a low-dropout linear regulator operates from a +2.25V to +5.5V supply and delivers a guaranteed 500mA load current with low 175mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from +0.8V to +4.5V with an external resistive-divider. An internal PMOS pass transistor allows low 210μA supply current, making the MAX1806EUA18+T ideal for portable equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, and other equipment, including base stations and docking stations. The applications of the MAX1806EUA18+T include Notebook Computers, Cellular and Cordless Telephones, PDAs, Palmtop Computers, Base Stations, USB Hubs, Docking Stations.

Parametrics

MAX1806EUA18+T absolute maximum ratings: (1)IN, SHDN, POK, SET to GND: -0.3V to +6V; (2)OUT to GND: -0.3V to (VIN + 0.3V); (3)Output Short-Circuit Duration: Continuous; (4)Continuous Power Dissipation (TA = +70℃); (5)8-Pin Power-μMAX (derate 17mW/℃ above +70℃): 1.3W; (6)Operating Temperature: -40℃ to +85℃; (7)Junction Temperature: +150℃; (8)Storage Temperature Range: -65℃ to +150℃; (9)Lead Temperature (soldering, 10s): +300℃.

Features

MAX1806EUA18+T features: (1)Guaranteed 500mA Output Current; (2)Output Down to 0.8V; (3)Low 175mV Dropout at 500mA; (4)±1% Output Voltage Accuracy Preset at 0.8V, 1.5V, 1.8V, 2.5V, or 3.3V Adjustable from 0.8V to 4.5V; (5)Power-OK Output; (6)Low 210μA Ground Current; (7)0.02μA Shutdown Current; (8)Thermal Overload Protection; (9)Output Current Limit; (10)Tiny 1.3W, 8-Pin Power-μMAX Package.

Diagrams

MAX1806EUA18+T block diagram

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