LP3874ES-3.3/NOPB ,0.8A Fast Ultra Low Dropout Linear Regulators 5-DDPAK/TO-263 -40 to 125Features 3 DescriptionThe LP3871 and LP3874 series of fast ultra-low-1• Input Voltage: 2.5 V to 7 V ..
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0.8A Fast Ultra Low Dropout Linear Regulators 5-SOT-223 -40 to 125
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LP3871, LP3874SNVS225H –FEBRUARY 2003–REVISED JUNE 2015
LP387x 0.8-A Fast Ultra-Low-Dropout Linear Regulators Features 3 DescriptionThe LP3871 and LP3874 seriesof fast ultra-low- Input Voltage: 2.5Vto7V dropout linear regulators operate froma 2.5-Vto 7-V• Ultra-Low-Dropout Voltage input supply. Wide range of preset output voltage• Low Ground Pin Current options are available. These ultra-low-dropout linear
regulators respond very quicklyto step changesin• Load Regulationof 0.04% load, which makes them suitable for low voltage• 10-nA Quiescent Currentin Shutdown Mode microprocessor applications. The devices are• Specified Output Currentof 0.8-A DC developed ona CMOS process which allows low
quiescent current operation independent of output• Output Voltage Accuracy ±1.5%
load current. This CMOS process also allows the• ERROR Flag Indicates Output Status LP3871 and LP3874to operate under extremely low• SENSE Option Improves Load Regulation dropout conditions. Minimum Output Capacitor Requirements
Dropout Voltage: Ultra-low-dropout voltage; typically• Overtemperature/Overcurrent Protection 24 mVat 80-mA load current and 240 mVat 0.8-A −40°Cto +125°C Junction Temperature Range load current.
Ground Pin Current: Typically6 mAat 0.8-A load
2 Applications current. Microprocessor Power Supplies
Shutdown Mode: Typically 10-nA quiescent current• GTL, GTL+, BTL, and SSTL Bus Terminators when the SD pinis pulled low. Power Supplies for DSPs
ERROR Flag: ERROR flag goes low when the output• SCSI Terminator voltage drops 10% below nominal value. Post Regulators
SENSE: SENSE pin improves regulationat remote• High-Efficiency Linear Regulators loads. Battery Chargers
Precision Output Voltage: Multiple output voltage Other Battery-Powered Applications options are available ranging from 1.8Vto5V witha
ensured accuracyof ±1.5%at room temperature, and
±3% over all conditions (varying line, load, and
temperature).
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Applications mustbe pulled high
pullup Application high Implementation more
