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LP3961EMP-3.3 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3961EMP-3.3 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP3961, LP3964 SNVS056J – MAY 2000 – REVISED JUNE 2015 LP396x 800-mA Fast Ultra-Low-Dropout Linear Regulators 1 Features 3 Description The LP396x series of fast ultra-low-dropout linear 1 • Input Supply Voltage: 2.5 V to 7 V regulators operate from a 2.5-V to 7-V input supply. A • Ultra-Low Dropout Voltage wide range of preset output voltage options are • Low Ground Pin Current available. These ultra-low dropout linear regulators respond very fast to step changes in load which • Load Regulation of 0.02% makes them suitable for low-voltage microprocessor • 15-µA Quiescent Current in Shutdown Mode applications. The LP3961 and LP3964 are developed • Specified Output Current of 0.8-A DC on a CMOS process which allows low quiescent current operation independent of output load current, • Output Voltage Accuracy ±1.5% as well as operation under extremely low dropout • ERROR Flag Indicates Output Status (LP3961) conditions. • Sense Option Improves Better Load Regulation Dropout Voltage: Ultra-low dropout voltage; typically (LP3964) 24 mV at 80-mA load current and 240 mV at 800-mA • Extremely Low Output Capacitor Requirements load current. • Overtemperature and Overcurrent Protection Ground Pin Current: Typically 4 mA at 800-mA load • −40°C to 125°C Junction Temperature Range current. ERROR Flag: ERROR flag goes low when the output 2 Applications voltage drops 10% below nominal value (for LP3961). • Microprocessor Power Supplies SENSE: SENSE pin improves regulation at remote • GTL, GTL+, BTL, and SSTL Bus Terminators loads (for LP3964). • Power Supplies for DSPs Precision Output Voltage: Multiple output voltage • SCSI Terminator options are available ranging from 1.2 V to 5 V and • Post Regulators adjustable (LP3964), with a specified accuracy of • High-Efficiency Linear Regulators ±1.5% at room temperature, and ±3% over all conditions (varying line, load, and temperature). • Battery Chargers • Other Battery-Powered Applications Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOT-223 (5) 6.50 mm × 3.56 mm LP3961 LP3964 TO-263 (5) 10.16 mm × 8.42 mm LP3964 TO-220 (5) 14.986 mm × 10.16 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. space LP3964 Typical Application Circuits LP3961 Typical Application Circuit A. *SD and ERROR pins must be pulled high through a 10-k Ω pullup resistor. Connect the ERROR pin to ground if this function is not used. *See note A on LP3961 Typical Application Circuit. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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