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MAX1818EUT33#TG16 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
稳压芯片
封装:
SOT-23-6
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MAX1818EUT33#TG16数据手册
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
General Description
The MAX1818 low-dropout linear regulator operates
from a +2.5V to +5.5V supply and delivers a guaran-
teed 500mA load current with low 120mV dropout. The
high-accuracy (±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 resis-
tive 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 equip-
ment such as personal digital assistants (PDAs), cellu-
lar 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 regula-
tion, a 0.1µA shutdown, short-circuit protection, and
thermal shutdown protection. The device is available in
a miniature 800mW 6-pin SOT23 package.
Applications
Notebook Computers
Cellular and Cordless Telephones
Personal Digital Assistants (PDAs)
Palmtop Computers
Base Stations
USB Hubs
Docking Stations
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
♦ Power OK Output
♦ Low 125µA Ground Current
♦ 0.1µA Shutdown Current
♦ Thermal Overload Protection
♦ Output Current Limit
♦ Tiny 800mW 6-Pin SOT23 Package
MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
________________________________________________________________
Maxim Integrated Products
1
19-1860; Rev 2; 6/08
Ordering Information
*
Insert the desired two-digit suffix (see Selector Guide) into the
blanks to complete the part number.
PART* TEMP RANGE PIN-PACKAGE
MAX1818EUT_ _-T -40°C to +85°C 6 SOT23
MAX1818EUT_ _#T -40°C to +85°C 6 SOT23
Typical Operating Circuit
NC
MAX1818
IN
ON
OFF
C
IN
1μF
SHDN
OUT
POK
GNDSET
C
OUT
3.3μF
V
OUT
TO
μC
V
IN
= 2.5V TO 5.5V
R
POK
100k
Pin Configuration
POK
GNDSHDN
16OUT
5 SET
IN
MAX1818
SOT23
TOP VIEW
2
34
Note
:
The MAX1818 requires a special solder temperature
profile described in the Absolute Maximum Ratings section.
T = Tape and reel.
#
Denotes an RoHS-compliant package.
Selector Guide appears at end of data sheet.
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