DESCRIPTION

The LT®3083 is a 3A low dropout linear regulator that can be paralleled to increase output current or spread heat on surface mounted boards. Architected as a precision current source and voltage follower, this new regulator fnds use in many applications requiring high current, adjustability to zero, and no heat sink. The device also brings out the collector of the pass transistor to allow low dropout operation—down to 310mV—when used with multiple supplies.

FEATURES

■ Outputs May be Paralleled for Higher Current and
Heat Spreading
■ Output Current: 3A
■ Single Resistor Programs Output Voltage
■ 50µA Set Pin Current: 1% Initial Accuracy
■ Output Adjustable to 0V
■ Low Output Noise: 40µVRMS (10Hz to 100kHz)
■ Wide Input Voltage Range: 1.2V to 23V
(DD-Pak and TO-220 Packages)
■ Low Dropout Voltage: 310mV
■ <1mV Load Regulation
■ <0.001%/V Line Regulation
■ Minimum Load Current: 1mA
■ Stable with Minimum 10µF Ceramic Capacitor
■ Current Limit with Foldback and Overtemperature
Protection
■ Available in 16-Lead TSSOP, 12-Lead 4mm × 4mm
DFN, 5-Lead TO-220 and 5-Lead Surface Mount
DD-PAK Packages

APPLICATIONS

■ High Current All Surface Mount Supply
■ High Effciency Linear Regulator
■ Post Regulator for Switching Supplies
■ Low Parts Count Variable Voltage Supply
■ Low Output Voltage Power Supplies