LT3082 - 200mA Single Resistor Low Dropout Linear Regulator

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
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LT3082 Typical Application
LT3082 Typical Application

Description

The LT3082 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.

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

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3082EDD#PBF 3x3 DFN-8 DD E 05-08-1698 Yes
LT3082EDD#TRPBF 3x3 DFN-8 DD E 05-08-1698 Yes
LT3082EST#PBF SOT-223 ST E 05-08-1630 Yes
LT3082EST#TRPBF SOT-223 ST E 05-08-1630 Yes
LT3082ETS8#PBF SOT-23 TS8 E 05-08-1637 Yes
LT3082ETS8#TRMPBF SOT-23 TS8 E 05-08-1637 Yes
LT3082ETS8#TRPBF SOT-23 TS8 E 05-08-1637 Yes
LT3082IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT3082IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT3082IST#PBF SOT-223 ST I 05-08-1630 Yes
LT3082IST#TRPBF SOT-223 ST I 05-08-1630 Yes
LT3082ITS8#PBF SOT-23 TS8 I 05-08-1637 Yes
LT3082ITS8#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LT3082ITS8#TRPBF SOT-23 TS8 I 05-08-1637 Yes
LT3082MPST SOT-223 ST MP 05-08-1630 No
LT3082MPST#PBF SOT-223 ST MP 05-08-1630 Yes
LT3082MPST#TR SOT-223 ST MP 05-08-1630 No
LT3082MPST#TRPBF SOT-223 ST MP 05-08-1630 Yes


LT3082 Package Drawing
LT3082 Package Drawing
LT3082 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3082EDD#PBF 3x3 DFN-8 E $2.00 $1.40 Yes
LT3082EDD#TRPBF 3x3 DFN-8 E $1.46 Yes
LT3082EST#PBF SOT-223 E $2.14 $1.50 Yes
LT3082EST#TRPBF SOT-223 E $1.56 Yes
LT3082ETS8#PBF SOT-23 E $2.00 Yes
LT3082ETS8#TRMPBF SOT-23 E $2.00 $1.45 Yes
LT3082ETS8#TRPBF SOT-23 E $2.00 $1.40 Yes
LT3082IDD#PBF 3x3 DFN-8 I $2.23 $1.56 Yes
LT3082IDD#TRPBF 3x3 DFN-8 I $1.62 Yes
LT3082IST#PBF SOT-223 I $2.39 $1.67 Yes
LT3082IST#TRPBF SOT-223 I $1.73 Yes
LT3082ITS8#PBF SOT-23 I $2.23 Yes
LT3082ITS8#TRMPBF SOT-23 I $2.23 $1.61 Yes
LT3082ITS8#TRPBF SOT-23 I $2.23 $1.56 Yes
LT3082MPST SOT-223 MP $5.79 $4.05 No
LT3082MPST#PBF SOT-223 MP $5.79 $4.05 Yes
LT3082MPST#TR SOT-223 MP $4.11 No
LT3082MPST#TRPBF SOT-223 MP $4.11 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1447A LT3082EDD Demo Board | Prog 2-Terminal Linear Regulator, 2.8V ≤ VIN ≤ 35V, Vout = 1.2V/1.8V/2.5V/3.3V/5V @ 200mA $75.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3082IDD#PBF 3x3 DFN-8 I $2.23 $1.56 Yes
LT3082IDD#TRPBF 3x3 DFN-8 I $1.62 Yes
LT3082IST#PBF SOT-223 I $2.39 $1.67 Yes
LT3082IST#TRPBF SOT-223 I $1.73 Yes
LT3082ITS8#PBF SOT-23 I $2.23 Yes
LT3082ITS8#TRMPBF SOT-23 I $2.23 $1.61 Yes
LT3082ITS8#TRPBF SOT-23 I $2.23 $1.56 Yes
LT3082MPST#PBF SOT-223 MP $5.79 $4.05 Yes
LT3082MPST#TRPBF SOT-223 MP $4.11 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

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

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

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LT3082

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