The LT3082EST 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 LT3082EST withstands reverse input voltages and reverse output-to-input voltages without reverse-current flow.
A key feature of the LT3082EST 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 LT3082EST 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 thermal limiting. The LT3082EST is offered in the thermally enhanced 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm × 3mm DFN packages.
Feature
- 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
(Picture: Pinout)
