1FEATURES

2? Ultra Low Dropout Voltage

? Low Ground Pin Current

? Load Regulation of 0.08%

? 1μA Quiescent Current in Shutdown Mode

? Specified Output Current of 3A DC

? Available in DDPAK/TO-263 and TO-220

Packages

? Minimum output Capacitor Requirements

? 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 LP3876-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 LP3876-ADJ is developed on a CMOS process which allows low quiescent current

operation independent of output load current. This

CMOS process also allows the LP3876-ADJ to

operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically

80mV at 300mA load current and 800mV at 3A load

current.

Ground Pin Current: Typically 6mA at 3A load

current.

Shutdown Mode: Typically 1μA quiescent current

when the shutdown pin is pulled low.

Adjustable Output Voltage: The output voltage may

be programmed via two external resistors.