LP38841MR-ADJ ,0.8A Ultra Low Dropout Linear RegulatorsPin DescriptionPin Name DescriptionBIAS The bias pin is used to provide the low current bias voltag ..
LP38841MRX-ADJ NOPB ,0.8A Fast-Response Ultra Low Dropout Adjustable Linear Regulators 8-SO PowerPAD -40 to 125FEATURES DESCRIPTIONThe LP38841-ADJ is a high current, fast response2• Ideal for Conversion from 1. ..
LP38841MRX-ADJ/NOPB ,0.8A Fast-Response Ultra Low Dropout Adjustable Linear Regulators 8-SO PowerPAD -40 to 125ELECTRICAL CHARACTERISTICSLimits in standard typeface are for T = 25°C, and limits in boldface type ..
LP38841S-1.2 ,0.8A Ultra Low Dropout Linear RegulatorsFeaturesn Ideal for conversion from 1.8V or 1.5V inputsThe LP38841 is a high current, fast response ..
LP38842MR-ADJ ,1.5A Ultra Low Dropout Linear RegulatorsPin DescriptionPin Name DescriptionBIAS The bias pin is used to provide the low current bias voltag ..
LP38842S-1.2 ,1.5A Ultra Low Dropout Linear RegulatorsApplicationssuitable for use in powering DSP, Microcontroller Core volt-n ASIC Power Supplies In:ag ..
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LP38841MR-ADJ-LP38841S-1.2
0.8A Ultra Low Dropout Linear Regulators
LP38841
0.8A Ultra Low Dropout Linear Regulators
Stable with Ceramic Output Capacitors
General DescriptionThe LP38841isa high current, fast response regulator
which can maintain output voltage regulation with minimum
inputto output voltage drop. Fabricatedona CMOS process,
the device operates from two input voltages: Vbias provides
voltageto drive the gateof the N-MOS power transistor,
while Vinis the input voltage which supplies powerto the
load. The useofan external bias rail allows the partto
operate from ultra low Vin voltages. Unlike bipolar regula-
tors,the CMOS architecture consumes extremely low quies-
cent currentat any output load current. The useof an
N-MOS power transistor resultsin wide bandwidth,yet mini-
mum external capacitanceis requiredto maintain loop sta-
bility.
The fast transient responseof these devices makes them
suitablefor usein powering DSP, Microcontroller Core volt-
ages and Switch Mode Power Supply post regulators. The
partsare availablein TO-220 and TO-263 packages.
Dropout Voltage:75 mV (typ)@ 0.8A load current.
Quiescent Current:30 mA (typ)atfull load.
Shutdown Current:30nA (typ) when S/Dpinis low.
Precision Output Voltage: 1.5% room temperature accu-
racy.
Features Idealfor conversion from 1.8Vor 1.5V inputs Designedfor use with low ESR ceramic capacitors 0.8V, 1.2V and 1.5V standard voltages available Ultra low dropout voltage (75mV@ 0.8A typ) 1.5% initial output accuracy Load regulationof 0.1%/A (typical) 30nA quiescent currentin shutdown (typical) Low groundpin currentatall loads Over temperature/over current protection Availablein5 lead TO220 and TO263 packages −40˚Cto +125˚C junction temperature range
Applications ASIC Power SuppliesIn: Desktops, Notebooks, and Graphics Cards, Servers Gaming Set Top Boxes, Printers and Copiers Server Core andI/O Supplies DSP and FPGA Power Supplies SMPS Post-Regulator
Typical Application Circuit20102801 Minimum value requiredif Tantalum capacitoris used (see Application Hints).
December 2004
LP38841
0.8A
Ultra
Low
Dropout
Linear
Regulators
Stable
with
Ceramic
Output
Capacitors
