Analog Devices LT3083

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 finds 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 andHeat 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 Regulationn
• <0.001%/V Line Regulation
• Minimum Load Current: 1mA
• Stable with Minimum 10μF Ceramic Capacitor
• Current Limit with Foldback and OvertemperatureProtection
• Available in 16-Lead TSSOP, 12-Lead 4mm × 4mmDFN, 5-Lead TO-220 and 5-Lead Surface MountDD-PAK Packages

Typical applications

• Low Output Voltage Power Supplies, Low Parts Count Variable Voltage Supply, Post Regulator for Switching Supplies, High Efficiency Linear Regulator

More information

• Datasheet
• IC product information