LP3855-ADJ

LP3855-ADJ www.ti.com SNVS244F – SEPTEMBER 2003 – REVISED APRIL 2013 LP3855-ADJ 1.5A Fast Response Ultra Low Dropout Linear Regulators Check for Samples: LP3855-ADJ FEATURES 1 2 Ultra Low Dropout Voltage Stable with Selected Ceramic Capacitors Low Ground Pin Current Load Regulation of 0.06% 10nA Quiescent Current in Shutdown Mode Specified Output Current of 1.5A DC Available in DDPAK/TO-263, TO-220 and SOT- 223 Packages Overtemperature/Overcurrent Protection −40°C to +125°C Junction Temperature Range 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 DESCRIPTION The LP3855-ADJ fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3855-ADJ is developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3855-ADJ to operate under extremely low dropout conditions. Dropout Voltage: Ultra low dropout voltage; typically 24mV at 150mA load current and 240mV at 1.5A load current. Ground Pin Current: Typically 4mA at 1.5A load current. Shutdown Mode: Typically 10nA quiescent current when the shutdown p...