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LP3873 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3873 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page LP3873, LP3876 www.ti.com SNVS220E – NOVEMBER 2002 – REVISED APRIL 2013 LP3873/LP3876 3A Fast Ultra Low Dropout Linear Regulators Check for Samples: LP3873, LP3876 1 FEATURES DESCRIPTION The LP3873/LP3876 series of fast ultra low-dropout 2 • Ultra Low Dropout Voltage linear regulators operate from a +2.5V to +7.0V input • Low Ground Pin Current supply. Wide range of preset output voltage options • Load Regulation of 0.08% are available. These ultra low dropout linear regulators respond very quickly to step changes in • 1µA Quiescent Current in Shutdown Mode load, which makes them suitable for low voltage • Ensured Output Current of 3A DC microprocessor applications. The LP3873/LP3876 are • Available in DDPAK/TO-263 and TO-220 developed on a 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 80mV at 300mA load current and 800mV at 3A load • Overtemperature/overcurrent Protection current. • −40°C to +125°C Junction Temperature Range Ground Pin Current: Typically 6mA at 3A load current. APPLICATIONS Shutdown Mode: Typically 1µA quiescent current • Microprocessor Power Supplies when the shutdown pin is 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 1.8V to 5.0V with an ensured accuracy of ±1.5% at room temperature, • Other Battery Powered Applications and ±3.0% over all conditions (varying line, load, and temperature). Typical Application Circuits *SD and ERROR pins must be pulled high through a 10k Ω pull-up resistor. Connect the ERROR pin to ground if this function is not used. See Application Hints for more information. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2002–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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