LP3961

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 1 Input Supply Voltage: 2.5 V to 7 V Ultra-Low Dropout Voltage Low Ground Pin Current Load Regulation of 0.02% 15-µA Quiescent Current in Shutdown Mode Specified Output Current of 0.8-A DC Output Voltage Accuracy ±1.5% ERROR Flag Indicates Output Status (LP3961) Sense Option Improves Better Load Regulation (LP3964) Extremely Low Output Capacitor Requirements Overtemperature and Overcurrent Protection −40°C to 125°C Junction Temperature Range 2 Applications Microprocessor Power Supplies GTL, GTL+, BTL, and SSTL Bus Terminators Power Supplies for DSPs SCSI Terminator Post Regulators High-Efficiency Linear Regulators Battery Chargers Other Battery-Powered Applications LP3964 Typical Application Circuits 3 Description The LP396x series of fast ultra-low-dropout linear regulators operate from a 2.5-V to 7-V input supply. A wide range of preset output voltage options are available. These ultra-low dropout linear regulators respond very fast to step changes in load which makes them suitable for low-voltage microprocessor applications. The LP3961 and LP3964 are developed on a CMOS process which allows low quiescent current operation independent of output load current, as well as operation under extremely low dropout conditions. Dropout ...