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PDF LR2126 Data sheet ( Hoja de datos )
| Número de pieza | LR2126 | |
| Descripción | CMOS IC | |
| Fabricantes | UNISONIC TECHNOLOGIES | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
LR2126
1A FAST ULTRA LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
The UTC LR2126 operate from a +2.5V ~ +6.0V input supply as
fast ultra lo w-dropout linear r egulators. W ide output voltag e range
options are availa ble. T he fa st response characteristic to make
UTC LR2126 suitable for lo w voltage micr oprocessor ap plication.
The lo w q uiescent current operatio n an d lo w dr opout qualit y
caused by the CMOS process.
The UT C LR2126 has ultra lo w dropout voltag e
300mV at 1A load current typically.
The ground pin current is typically 60uA at 1mA load current.
Output Voltag e Precisi on: M ultiple out put voltage opti ons are
available and ranging from 1.2V ~ 5.0V at room temperature with a
guaranteed accuracy of ±1.5 %, and ±3.0% w hen varying line, load
and temperature.
FEATURES
* Ultra Low Dropout Voltage
* Low Ground Pin Current
* 0.04% Load Regulation
* The Guaranteed Output Current is 1A DC
* Output Voltage Accuracy ± 1.5%
* Low Output Capacitor Required
* Over temperature Protection And Over current Protection
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LR2126L-xx-AB5-R
LR2126G-xx-AB5-R
Package
SOT89-5
CMOS IC
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 7
QW-R502-A60.A
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1 page  
LR2126
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
Notes: 1. The LR2126 output must be diode-clamped to ground. If used in a dual-supply system where the regulator
load is returned to a negative supply.
2. Bet ween th e V IN and V OUT terminals the output PMOS structure cont ains a di ode. T his diode is revers e
biased normally. If the volt age at the output terminal is forced to b e higher than th e voltage at th e input terminal
this diod e will get for ward bi ased. T his diode can withstand 1Amp of peak current an d 200mA of DC curren t
typically.
3. Devices must be derated based on package thermal resistance at elevated temperatures.
4. Conditions for which the d evice is i ntended to be fu nctional is indicated by operating ratings, but sp ecific
performance limits isn’t b e guaranteed. To make sur e of specifications and test co nditions, read Electrical
Characteristics. Only for th e test conditions listed the guaranteed specifications can be applied. When the
device is not operated under the listed test conditions some performance characteristics may degrade.
5. Output volt age l ine reg ulation is th e ch ange in output voltag e from the nomi nal value which is due t o
change in the input lin e voltage. Which is define d as the chan ge in out put voltage from the nomin al value
due to c hange in lo ad curr ent is output vo ltage l oad reg ulation. T he loa d regu lation a nd li ne re gulation
specification include the typical number only. But, the limits for load and line regulation are included in t he
output voltage tolerance specification.
6. At which the output drops 2% bel ow the normal val ue dropout voltage is define d as the minimum in put to
output differential voltage. Only to output voltages of 2.5V and above dropout voltage specification applies.
For output v oltages below 2.5V, since th e minimum input voltage is 2.5V, the dro p-out voltage is nothing
but the input to output differential.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R502-A60.A
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