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LP2992AILD-1.8-LP2992AILD-2.5-LP2992AILD-3.3-LP2992AILD-5.0-LP2992AILDX-1.8-LP2992AILDX-3.3-LP2992AILDX-5.0-LP2992AIM5-1.5-LP2992AIM5-1.8-LP2992AIM5-2.5-LP2992AIM5-3.0-LP2992AIM5-3.3-LP2992AIM5-5.0-LP2992AIM5X-1.5-LP2992AIM5X-1.8-LP2992AIM5X-2.5-LP2992AIM5X-3.0-LP2992AIM5X-
Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages
LP2992
Micropower 250 mA Low-Noise Ultra Low-Dropout
Regulator in SOT-23 and LLP Packages
Designed for Use with Very Low ESR Output Capacitors
General DescriptionThe LP2992isa 250 mA, fixed-output voltage regulator
designedto provide ultra low-dropout and low noisein bat-
tery powered applications.
Usingan optimized VIP™ (Vertically Integrated PNP) pro-
cess, the LP2992 delivers unequalled performanceinall
specifications criticalto battery-powered designs:
Dropout Voltage: Typically 450 mV@ 250 mA load, and
5mV@1 mA load.
Ground Pin Current: Typically 1500µA@ 250 mAload, andµA@1 mA load.
Enhanced Stability: The LP2992is stable with output ca-
pacitor ESRas lowas5 mΩ, which allowsthe useof ceramic
capacitorson the output.
Sleep Mode: Less than1 µA quiescent current when
ON/OFFpinis pulled low.
Smallest Possible Size: SOT-23 and LLP packages use
absolute minimum board space.
Precision Output: 1% tolerance output voltages available grade).
Low Noise:By addinga10nF bypass capacitor, output
noise canbe reducedto30µV (typical).
Multiple voltage options, from 1.5Vto 5.0V,are availableas
standard products. Consult factoryfor custom voltages.
Features Ultra low dropout voltage Guaranteed 250 mA output current Smallest possible size (SOT-23, LLP package) Requires minimum external components Stable with low-ESR output capacitor <1µA quiescent current when shut down Low groundpin currentatall loads Output voltage accuracy 1%(A Grade) High peak current capability Wide supply voltage range (16V max) Low ZOUT: 0.3Ω typical (10Hzto1 MHz) Overtemperature/overcurrent protection −40˚Cto +125˚C junction temperature range Custom voltages available
Applications Cellular Phone Palmtop/Laptop Computer Personal Digital Assistant (PDA) Camcorder, Personal Stereo, Camera
Block DiagramJune 2002
LP2992
Micropower
Low-Noise
Ultra
Low-Dropout
Regulator
SOT
and
LLP
Packages
