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LP3873ES-1.8/NOPB-LP3873ES-2.5/NOPB-LP3873ES-5.0/NOPB-LP3873ESX-5.0/NOPB
3A Fast Ultra Low Dropout Linear Regulator 5-DDPAK/TO-263 -40 to 125
LP3873, LP3876
www.ti.com SNVS220E –NOVEMBER 2002–REVISED APRIL 2013
LP3873/LP3876 3A Fast Ultra Low Dropout Linear Regulators
Checkfor Samples: LP3873, LP3876
1FEATURES DESCRIPTIONThe LP3873/LP3876 seriesof fast ultra low-dropout
Ultra Low Dropout Voltage linear regulators operate froma +2.5Vto +7.0V input
• Low Ground Pin Current supply. Wide rangeof preset output voltage options
Load Regulationof 0.08% are available. These ultra low dropout linear
regulators respond very quicklyto step changesin
• 1µA Quiescent Currentin Shutdown Mode load, which makes them suitable for low voltage
• Ensured Output Currentof 3A DC microprocessor applications. The LP3873/LP3876 are
• Availablein DDPAK/TO-263 and TO-220 developed ona CMOS process which allows low
Packages quiescent current operation independent of output
load current. This CMOS process also allows the
• Output Voltage Accuracy± 1.5% LP3873/LP3876 to operate under extremely low
• Error Flag Indicates Output Status dropout conditions.
• Sense Option Improves Load Regulation Dropout Voltage: Ultra low dropout voltage; typically
• Minimum Output Capacitor Requirements 80mVat 300mA load current and 800mVat 3A load
Overtemperature/overcurrent Protection current.
−40°Cto +125°C Junction Temperature Range Ground Pin Current: Typically 6mA at 3A load
current.
APPLICATIONS Shutdown Mode: Typically1µA quiescent current
• Microprocessor Power Supplies when the shutdown pinis pulled low.
GTL, GTL+, BTL, and SSTL Bus Terminators Error Flag:Error flag goes low when the output
Power Supplies for DSPs voltage drops 10% below nominal value.
SCSI Terminator SENSE: Sense pin improves regulation at remote
Post Regulators loads.
High Efficiency Linear Regulators Precision Output Voltage: Multiple output voltage
Battery Chargers options are available ranging from 1.8Vto 5.0V with ensured accuracyof ±1.5%at room temperature,
• Other Battery Powered Applications and ±3.0% overall conditions (varying line, load, and
temperature). high througha 10kΩ pull-up resistor. Connect Hintsfor more information.
