LT1117CST

800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V

DESCRIPTION

The LT®1117 is a positive low dropout regulator designed to provide up to 800mA of output current. The device is available in an adjustable version and fixed output voltages of 2.85V, 3.3V and 5V. The 2.85V version is designed specifically to be used in Active Terminators for the SCSI bus. All internal circuitry is designed to operate down to 1V input to output differential. Dropout voltage is guaranteed at a maximum of 1.2V at 800mA, decreasing at lower load currents. On chip trimming adjusts the reference/output voltage to within ±1%. Current limit is also trimmed in order to minimize the stress on both the regulator and the power source circuitry under overload conditions.

FEATURES

■ Space Saving SOT-223 Surface Mount Package

■ 3-Terminal Adjustable or Fixed 2.85V, 3.3V, 5V

■ Output Current of 800mA

■ Operates Down to 1V Dropout

■ Guaranteed Dropout Voltage at Multiple Current Levels

■ 0.2% Line Regulation Max

■ 0.4% Load Regulation Max

APPLICATIONS

■ Active SCSI Terminators

■ High Efficiency Linear Regulators

■ Post Regulators for Switching Supplies

■ Battery Chargers

■ 5V to 3.3V Linear Regulators