LT3080

RECOMMENDED FOR NEW DESIGNS

Adjustable 1.1A Single Resistor Low Dropout Regulator

Data Sheet (Rev. D) Product Selection Table
Part Models
23
1ku List Price
Starting From $2.20
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Part Details

  • Outputs May Be Paralleled for Higher Current and Heat Spreading
  • Output Current: 1.1A
  • Single Resistor Programs Output Voltage
  • 1% Initial Accuracy of SET Pin Current
  • Output Adjustable to 0V
  • Low Output Noise: 40μVRMS (10Hz to 100kHz)
  • Wide Input Voltage Range: 1.2V to 36V
  • Low Dropout Voltage: 350mV (Except SOT-223 Package)
  • <1mV Load Regulation
  • <0.001%/V Line Regulation
  • Minimum Load Current: 0.5mA
  • Stable with 2.2μF Minimum Ceramic Output Capacitor
  • Current Limit with Foldback and Overtemperature Protected
  • Available in 8-Lead MSOP, 3mm × 3mm DFN
  • 5-Lead DD-Pak, TO-220 and 3-Lead SOT-223
  • AEC-Q100 Qualified for Automotive Applications
LT3080
Adjustable 1.1A Single Resistor Low Dropout Regulator
Variable Output Voltage 1.1A Supply Set Pin Current Distribution Product Package 1 Product Package 2 Product Package 3 Product Package 4 Product Package 5
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Application Note 3

Design Note 2

Technical Articles 9

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2977
RECOMMENDED FOR NEW DESIGNS 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
Positive Linear Regulators (LDO) 1
LT1965
RECOMMENDED FOR NEW DESIGNS 1.1A, Low Noise, Low Dropout Linear Regulator
PowerPath, Ideal Diodes, and Load Switches 1
LTC4370
RECOMMENDED FOR NEW DESIGNS Two-Supply Diode-OR Current Balancing Controller
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Tools & Simulations

LTspice 5

Models for the following parts are available in LTspice:

  • LT3080
  • LT3080-1
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC995A

LT3080EDD Demo Board | Single Resistor Prog Linear Regulator, 2.3V ≤ VIN ≤ 25V, VOUT = 0.6V/1.0V/1.2V/1.5V/1.8V/2.5V/3.3V/5V @ 1.1A

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Product Details

Demonstration circuit 995A is an adjustable 1.1A linear regulator featuring the LT3080. Architected as a precision current source and voltage follower, it allows this new regulator to be used in many applications requiring high current, adjustability to zero output, and no heat sink. The device brings out the collector of the pass transistor to allow low dropout operation when used with multiple supplies. The demo board's input supply voltage range is 2.3V to 25V. For proper regulation, the LT3080 has a control pin; the voltage on this pin must be 1.2V to 1.35V higher than the output voltage.The output voltage is jumper selectable and can be set to 1.8V, a value between 0V and 5V (using trimpot R2) or a user-defined value.


A key feature of the LT3080 is its wide output voltage range. By using a reference current through a single resistor, the output voltage can be programmed to any level between zero and 36V. The DC995A has a reduced input voltage 25V due to input capacitor voltage rating. The DC995A can be used as a high current linear regulator, a post regulator for switching supply,a  variable voltage supply or a low output voltage power supply.

eval board
schematic 6
schematic 7
schematic 8
schematic 9
DC1294A

LT3080EDD Demo Board | LT3080(x4), Paralleled, Single Resistor LDOs, 3.8V ≤ VIN ≤ 25V, VOUT = 3.3V @ 4.4A

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Product Details

Demonstration circuit 1294A exercises four adjustable linear regulators in parallel using the LT3080. A small 20 mΩ ballast resistor is required for parallel operation. A short PCB trace can easily serve that purpose. The paralleled devices provide up to 4.4A of output current at 3.3V.


Architected as a precision current source and voltage follower, the LT3080 can be used in many applications requiring high current, adjustability to zero output, and no heat sink. The device brings out the collector of the pass transistor to allow low dropout operation when used with multiple supplies. The LT3080's output voltage can be programmed to any level between 0V and 36V; however the demo board has a reduced input voltage range from 3.8V to 25V due to the input capacitor voltage rating.


 


 
DC995A
LT3080EDD Demo Board | Single Resistor Prog Linear Regulator, 2.3V ≤ VIN ≤ 25V, VOUT = 0.6V/1.0V/1.2V/1.5V/1.8V/2.5V/3.3V/5V @ 1.1A
DC995A Demo Board DC995A Demo Board DC995A Demo Board DC995A Demo Board DC995A - Schematic
DC1294A
LT3080EDD Demo Board | LT3080(x4), Paralleled, Single Resistor LDOs, 3.8V ≤ VIN ≤ 25V, VOUT = 3.3V @ 4.4A
DC1294A Evaluation Board DC1294A Evaluation Board - Top View DC1294A Evaluation Board - Bottom View DC1294A - Schematic

Reference Designs

DK-DEV-5AGXB3NES Dev Kit
DK-DEV-5AGXB3NES Dev Kit
LTC Parts List
DK-DEV-5AGXB3NES Block Diagram
DK-DEV-5AGXB3NES Power Tree
Altera Arria V GX FPGA Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DK-DEV-5SGSMD5N DSP Dev Kit
DK-DEV-5SGSMD5N DSP Dev Kit
LTC Parts List
DK-DEV-5SGSMD5N Block Diagram
DK-DEV-5SGSMD5N Power Tree
Altera DSP Development Kit, Stratix V Edition Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DK-SI-4SGX230N Kit
DK-SI-4SGX230N Kit
LTC Parts List
DK-SI-4SGX230N Block Diagram
DK-SI-4SGX230N Power Tree
Altera Transceiver Signal Integrity Kit, Stratix IV GX Edition Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
SoCKit Dev Kit
SoCKit Dev Kit
SoCKit Block Diagram
SoCKit Development Kit Power Tree
Arrow/Terasic SoCKit Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
MAX 10 NEEK Dev Kit
MAX 10 NEEK Dev Kit
MAX 10 NEEK Block Diagram
MAX 10 NEEK Power Tree
MAX 10 NEEK Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Stratix V Advanced System Development Board
Stratix V Advanced System Development Board
Stratix V Advanced System Development Board Block Diagram
Stratix V Advanced Systems Development Board Power Tree
Stratix V Advanced System Development Board Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DE0 Nano SoC Dev Platform - Top View
DE0 Nano SoC Dev Platform - Top View
DE0 Nano SoC Dev Platform - Bottom View
DE0 Nano SoC Block Diagram
DE0 Nano SoC Power Tree
Terasic DE0-Nano-SoC Kit / Atlas-SoC Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DE-10 Nano Kit
DE-10 Nano Kit
DE-10 Nano Kit Block Diagram
DE-10 Nano Power Tree
Terasic DE10-Nano Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DE1-SoC Dev Kit
DE1-SoC Dev Kit
DE1-SoC Block Diagram
DE1-SoC Power Tree
Terasic DE1-SoC Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Figure 1. CN0577 Simplified Block Diagram
Figure 1. CN0577 Simplified Block Diagram
EVAL-CN0577-FMCZ
EVAL-CN0577-FMCZ - Top View
EVAL-CN0577-FMCZ - Bottom View
CN0577 Circuits from the lab

Analog Front End and Digital Interface for Serial LVDS SAR ADCs

View Detailed Reference Design

Features and Benefits

  • 18-Bit Resolution, 15 MSPS Data Acquisition System
  • Arbitrary Voltage Inputs Supported
  • All Clocking and Power Requirements are Onboard
  • FMC Connector for FPGA Interfacing
Altera Arria V GX FPGA Development Kit
DK-DEV-5AGXB3NES Dev Kit
LTC Parts List
DK-DEV-5AGXB3NES Block Diagram
DK-DEV-5AGXB3NES Power Tree
Altera DSP Development Kit, Stratix V Edition
DK-DEV-5SGSMD5N DSP Dev Kit
LTC Parts List
DK-DEV-5SGSMD5N Block Diagram
DK-DEV-5SGSMD5N Power Tree
Altera Transceiver Signal Integrity Kit, Stratix IV GX Edition
DK-SI-4SGX230N Kit
LTC Parts List
DK-SI-4SGX230N Block Diagram
DK-SI-4SGX230N Power Tree
Arrow/Terasic SoCKit Development Kit
SoCKit Dev Kit
SoCKit Block Diagram
SoCKit Development Kit Power Tree
MAX 10 NEEK Development Kit
MAX 10 NEEK Dev Kit
MAX 10 NEEK Block Diagram
MAX 10 NEEK Power Tree
Stratix V Advanced System Development Board
Stratix V Advanced System Development Board
Stratix V Advanced System Development Board Block Diagram
Stratix V Advanced Systems Development Board Power Tree
Terasic DE0-Nano-SoC Kit / Atlas-SoC Kit
DE0 Nano SoC Dev Platform - Top View
DE0 Nano SoC Dev Platform - Bottom View
DE0 Nano SoC Block Diagram
DE0 Nano SoC Power Tree
Terasic DE10-Nano Kit
DE-10 Nano Kit
DE-10 Nano Kit Block Diagram
DE-10 Nano Power Tree
Terasic DE1-SoC Development Kit
DE1-SoC Dev Kit
DE1-SoC Block Diagram
DE1-SoC Power Tree
CN0577
Analog Front End and Digital Interface for Serial LVDS SAR ADCs
Figure 1. CN0577 Simplified Block Diagram
EVAL-CN0577-FMCZ
EVAL-CN0577-FMCZ - Top View
EVAL-CN0577-FMCZ - Bottom View

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RE: LT3080 drived by a DAC
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