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LP2954N/a1158avai5V Micropower Low-Dropout Voltage Regulator


LP2954 ,5V Micropower Low-Dropout Voltage RegulatorApplicationswell suited for use as a low-power voltage reference. YHigh-efficiency linear regulator ..
LP2954AIM ,5V Micropower Low-Dropout Voltage RegulatorFeaturesn 5V output within 1.2% over temperature (A grade)The LP2954 is a 5V micropower voltage reg ..
LP2954AIMX ,5V Micropower Low-Dropout Voltage RegulatorApplicationsand over the entire operating temperature range.n High-efficiency linear regulatorn Low ..
LP2954AIS ,5V Micropower Low-Dropout Voltage RegulatorApplicationsand over the entire operating temperature range.n High-efficiency linear regulatorn Low ..
LP2954AISX ,5V Micropower Low-Dropout Voltage RegulatorLP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage RegulatorsJune 1999LP2954/LP2954A5V ..
LP2954AIT ,5V Micropower Low-Dropout Voltage RegulatorApplicationsand over the entire operating temperature range.n High-efficiency linear regulatorn Low ..
LSG F971 ,Multi ChipLEDApplications● hand phone back lighting● coupling in any light pipe● LCD back lighting● switch back ..
LSG T670 , Multi TOPLED
LSG T770 , Multi TOPLEDRG
LSGF971 ,Multi ChipLEDFeatures ● colors: super-red (628 nm) and green (572 nm)● color mixing is possible● each chi ..
LSGT670 , Multi TOPLED
LSGT670-J+L , Multi TOPLED


LP2954
5V Micropower Low-Dropout Voltage Regulator
TL/H/11128
LP2954/LP2954A
Micropower
Low-Dropout
Voltage
Regulators
June 1994
LP2954/LP2954A Micropower Low-Dropout Voltage Regulators
General Description
The LP2954isa three-terminal,5V micropowervoltagereg-
ulatorwith verylow quiescent current(90mA typicalat1mA
load)and verylow dropout voltage (typically60mVat light
loadsand470mVat250mA load current).
The quiescent current increases only slightlyat dropout
(120mA typical), which prolongs batterylife.
The LP2954is availablein the three-lead TO-220 and
TO-263 packages.
Reverse battery protectionis provided.
The tightlineand load regulation (0.04% typical),aswellas
verylow output temperature coefficient makethe LP2954
well suitedforuseasa low-power voltage reference.
The accuracyofthe5V outputis guaranteedat both room
temperature and over the entire operating temperature
range.
Features5V output within 1.2% over temperature(A grade) Guaranteed250mA output current Extremelylow quiescent current Low dropout voltage Reverse battery protection Extremely tightlineand load regulation Verylow temperature coefficient Current and thermal limitingPin compatible with LM2940and LM340
Applications High-efficiency linear regulator Low dropout battery-powered regulator
Package Outline and Ordering Information
TO-220 3-Lead Plastic Package
TL/H/11128–2
Front View
Order Number LP2954AITor LP2954IT
SeeNS Package T03B
TO-263 3-Lead PlasticSurface-MountPackage
TL/H/11128–9
TopView
TL/H/11128–10
Side View
Order Number LP2954AIS orLP2954IS
SeeNS Package TS3B
Ordering Information
Order Number Temp. Range Package NS Package
(TJ)§C (JEDEC) Number
LP2954AIT
b40to a125 TO-220 TO3B
LP2954IT
LP2954AIS
b40to a125 TO-263 TS3B
LP2954IS
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
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