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
AEC-Q100 data available for specific packages
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 |
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 Now • Request Samples | ||||||
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 | |||
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 Now • Request Samples | ||||||
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
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LT3082
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
