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UNISONIC TECHNOLOGIES
UNISONIC TECHNOLOGIES


L1131A

LOW NOISE 150mA LDO REGULATOR



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L1131A pdf
UNISONIC TECHNOLOGIES CO., LTD
L1131A
Preliminary
LOW NOISE 150mA LDO
REGULATOR
DESCRIPTION
The UT C L1131A is a COMS positive lin ear regul ator. One of
it’s feature is t he very low quiescent current typical as low as 10μA
and its dropout voltage is extremely low with 150mA output current,
and hi gh rip ple rejection. Eac h of these ICs consists of a voltage
reference unit, an error am plifier, resistor-net for voltage se tting, a
short current limit circuit, a chip enable circuit, and so on.
These ICs perform with low dropout voltage and the chip-enable
function. The supply current at no load of thi s IC is onl y 10μA, and
the line tra nsient respons e a nd t he lo ad tra nsient res ponse of the
UTC L1131A Series are excellent, thus these ICs are ver y suitable
for the power supply for hand-held communication equipment.
The output vol tage of th ese ICs is fixed with hig h accur acy.
Since th e pac kages for th ese ICs are SO T-23-5 therefore hig h
density mounting of the ICs on boards is possible.
FEATURES
* Low supply current Typ. 10μA
* Standby mode Typ. 0.1μA
* Output Voltage Range 1.2V~5.0V
* Excellent line regulation Typ. 0.02%/V
* Built-in fold back protection circuit
* Ceramic ca pacitors are rec ommended to be use d with this IC
CIN=COUT=1μF
ORDERING INFORMATION
Note:
Ordering Number
Lead Free
Halogen Free
L1131AL-xx-AF5-R
L1131AG-xx-AF5-R
xx: Output Voltage, refer to Marking Information.
Package
SOT-25
CMOS IC
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 5
QW-R502-A41.b
http://www.Datasheet4U.com



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L1131A pdf
L1131A
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
Preliminary
SOT-25
25: 2.5V
33: 3.3V
MARKING
PIN CONFIGURATION
CMOS IC
PIN DESCRIPTION
PIN NO.
1V
2 GND
3
4 NC
5V
PIN NAME
DD Input
pin
Ground pin
CE Chip enable pin
No connection
OUT Output
pin
BLOCK DIAGRAM
DESCRIPTION
VDD
-
+
VREF
Current Limit
CE
VOUT
GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 5
QW-R502-A41.b



Part Number L1131A
Description LOW NOISE 150mA LDO REGULATOR
Maker UNISONIC TECHNOLOGIES - UNISONIC TECHNOLOGIES
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