LT3082ETS8 Power Path Management IC Programmable 2-Terminal Current Source or Linear Regulator

FEATURES

n Outputs May Be Paralleled for Higher Output Current or Heat Spreading

n Maximum Output Current: 200mA
n Wide Input Voltage Range: 1.2V to 40V
n Output Adjustable to 0V
n Stable with Minimum 2.2μF Ceramic Capacitors n Single Resistor Sets Output Voltage
n Initial Set Pin Current Accuracy: 1%
n Low Output Noise: 33μVRMS (10Hz to 100kHz)
n Reverse-Battery Protection
n Reverse-Current Protection
n <1mV Load Regulation Typical
n <0.001%/V Line Regulation Typical
n Current Limit and Thermal Shutdown Protection n Available in 8-Lead SOT-23, 3-Lead SOT-223 and

8-Lead 3mm × 3mm DFN Packages

APPLICATIONS

n All-Surface Mount Power Supply
n Post Regulator for Switching Supplies
n Low Parts Count Variable Voltage Supply n Low Output Voltage Supply
n Battery Powered Regulator

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 ref- erence 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.

Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and ther- mal limiting. The LT3082 is offered in the thermally en- hanced 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm × 3mm DFN packages.