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LM3490IM5-12-LM3490IM5-15-LM3490IM5-3.3-LM3490IM5-5.0-LM3490IM5X-1.2-LM3490IM5X-12-LM3490IM5X-15-LM3490IM5X-3.3-LM3490IM5X-5.0
100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF
LM3490
100 mA, SOT-23, Quasi Low-Dropout Linear Voltage
Regulator with Logic-Controlled ON/OFF
General DescriptionThe LM3490isan integrated linear voltage regulator.It fea-
tures operation froman inputas highas 30V anda guaran-
teed maximum dropoutof 1.2Vatthefull 100 mAload. Stan-
dard packaging for the LM3490is the 5-lead SOT-23
package.A logic-controlled ON/OFF feature makes the
LM3490 idealfor powering subsystems ON and OFFas
needed.
The5, 12, and 15V membersof the LM3490 series arein-
tendedas tiny alternativesto industry standard LM78LXX
series and similar devices. The 1.2V quasi low dropoutof
LM3490 series devices makes thema nicefitin many appli-
cations wherethe2to 2.5V dropoutof LM78LXX series de-
vices precludes their (LM78LXX series devices) use.
The LM3490 series featuresa 3.3V member. The SOT pack-
aging and quasi low dropout featuresofthe LM3490 series
convergein this deviceto providea very nice, very tiny 3.3V,
100 mA bias supply that regulates directlyoff the system
5V±5% power supply.
Key Specifications 30V maximum inputfor operation 1.2V guaranteed maximum dropout overfull load and
temperature ranges 100 mA guaranteed load current ±5% guaranteed output voltage tolerance overfull load
and temperature ranges −40to +125˚C junction temperature rangefor operation
Features 3.3,5,12, and 15V versions available Logic-controlled ON/OFF Packagedinthe tiny 5-lead SOT-23 package
Applications Tiny alternativeto LM78LXX series and similar devices Tiny 5V±5%to 3.3V, 100 mA converter Post regulatorfor switching DC/DC converter Bias supplyfor analog circuits
Typical Application Circuit
Connection DiagramDS100071-2
DS100071-1
Top View
SOT-23 Package
5-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package
Package Code MF05A(Note1)
July 2000
LM3490
mA,
SOT
-23,
Quasi
Low-Dropout
Linear
oltage
Regulator
with
Logic-Controlled
ON/OFF
