DESCRIPTION
The LT®3082 is a 200mA low dropout linear regulator that can be
paralleled to increase output current or spread heat in surface
mounted boards. Architected as a precision current source and
voltage follower, this regulator benefits many applications
requiring high current, adjustability to zero and no heat sink. The
LT3082 withstands reverse input voltages and reverse
output-to-input voltages without reverse-current flow.
A key feature of the LT3082 is the capability to supply a wide
output voltage range. A precision “0” TC 10μA reference current
source drives a single resistor to program the output voltage to
any level between zero and 38.5V. The LT3082 is stable with only
2.2μF of capacitance on the output; the IC uses small ceramic
capacitors that do not require additional ESR as is common with
other regulators.
FEATURES
■ Outputs May Be Paralleled for Higher Output Current or Heat
Spreading
■ Maximum Output Current: 200mA
■ Wide Input Voltage Range: 1.2V to 40V
■ Output Adjustable to 0V
■ Stable with Minimum 2.2μF Ceramic Capacitors
■ Single Resistor Sets Output Voltage
■ Initial Set Pin Current Accuracy: 1%
■ Low Output Noise: 33μVRMS (10Hz to 100kHz)
■ Reverse-Battery Protection
■ Reverse-Current Protection
■ <1mV Load Regulation Typical
■ <0.001%/V Line Regulation Typical
■ Current Limit and Thermal Shutdown Protection
■ Available in 8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm × 3mm
DFN Packages
APPLICATIONS
■ All-Surface Mount Power Supply
■ Post Regulator for Switching Supplies
■ Low Parts Count Variable Voltage Supply
■ Low Output Voltage Supply
■ Battery Powered Regulator
