MAX1818EUT15+ by Analog Devices

500mA, Low-Dropout Linear Regulator in SOT23


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 high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide in the full data sheet) 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.
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Features

Guaranteed 500mA Output Current
Low 120mV Dropout at 500mA
±1% Output Voltage Accuracy Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V Adjustable from 1.25V to 5.0V
Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V
Adjustable from 1.25V to 5.0V
Power OK Output
Low 125µA Ground Current
0.1µA Shutdown Current
Thermal Overload Protection
Output Current Limit
Tiny 800mW 6-Pin SOT23 Package

Specifications

VIN (V) (min) 2.5
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 1.25
Adj. VOUT (V) (max) 5
Rated ILOAD (mA) 500
Preset VOUT (V) 25
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.12
ICC (µA) (max) 250
Output Voltage Noise (µV RMS) (typ) 115
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-7%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/6
BudgetaryPrice (See Notes) 1.28

Alternative Descriptions

100mA Low Dropout Linear Regul | Analog Devices


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