LT3080-1

RECOMMENDED FOR NEW DESIGNS

Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator

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Overview

  • Internal Ballast Resistor Permits Direct Connection to Power Plane 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: 300mV
  • <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 and 3mm × 3mm DFN
LT3080-1
Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator
Paralleling Regulators Offset Voltage Distribution Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 1

Technical Articles 4

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Ideal Diodes and PowerPath Controllers 1
LTC4370
RECOMMENDED FOR NEW DESIGNS Two-Supply Diode-OR Current Balancing Controller
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Tools & Simulations

LTspice 2

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
DC1368A

LT3080EDD-1 Demo Board | LT3080-1(x4), Paralleled, Single Resistor Prog Low Noise LDOs, 1.7V ≤ VIN ≤ 25V, VOUT = 1.2V @ 4.4A

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Product Details

Demonstration circuit 1368A exercises four adjustable linear regulators in parallel using the LT3080-1, which incorporates an internal ballast resistor. The ballast resistor allows direct paralleling of devices without the need for PC board resistors or sensor resistors.The paralleled devices provide up to 4.4A of output current at 1.2V.


Architected as a precision current source and voltage follower, the LT3080-1 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 LT3080-1's output voltage can be programmed to any level between 0V and 36V; however the demo board has a reduced input voltage range from 1.7V to 25V due to the input capacitor voltage rating.
DC1368A
LT3080EDD-1 Demo Board | LT3080-1(x4), Paralleled, Single Resistor Prog Low Noise LDOs, 1.7V ≤ VIN ≤ 25V, VOUT = 1.2V @ 4.4A
DC1368A - Schematic

Reference Designs

TR5-F40W Dev Kit
TR5-F40W Dev Kit
TR5-F40W Block Diagram
TR5-F40W Power Tree
Terasic TR5-F40W Stratix 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-5SGXEA7N Dev Kit
DK-DEV-5SGXEA7N Dev Kit
LTC Parts List
DK-DEV-5SGXEA7N Block Diagram
DK-DEV-5SGXEA7N Power Tree
DK-DEV-5SGXEA7N Power Tree No TI
Altera Stratix 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
TR4 Stratix IV Board
TR4 Stratix IV Board
LTC Parts List
TR4 Stratix IV Block Diagram
TR4 Stratix IV Power Tree
Terasic TR4 Stratix IV 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
DE4 Dev Kit
DE4 Dev Kit
DE4 Block Diagram
DE4 Power Tree
Terasic DE4 Development and Education 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
DK-DEV-4SGX230N Dev Kit
DK-DEV-4SGX230N Dev Kit
LTC Parts List
DK-DEV-4SGX230N Block Diagram
DK-DEV-4SGX230N Power Tree
Altera Stratix IV 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-VIDEO-4SGX230N Dev Kit
DK-VIDEO-4SGX230N Dev Kit
LTC Parts List
DK-VIDEO-4SGX230N Block Diagram
DK-VIDEO-4SGX230N Power Tree
Altera Audio Video Development 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
TR5-Lite Dev Kit
TR5-Lite Dev Kit
TR5-Lite Block Diagram
TR5-Lite Power Tree
Terasic TR5-Lite Stratix V 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
DE5-Net Dev Kit
DE5-Net Dev Kit
LTC Parts List
DE5-Net Block Diagram
DE5-Net Power Tree
Terasic DE5-Net Stratix V 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
C5G Starter Kit
C5G Starter Kit
CSG Block Diagram
C5G Power Tree
Terasic C5G Cyclone V GX Starter 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
Terasic TR5-F40W Stratix V GX FPGA Development Kit
TR5-F40W Dev Kit
TR5-F40W Block Diagram
TR5-F40W Power Tree
Altera Stratix V GX FPGA Development Kit
DK-DEV-5SGXEA7N Dev Kit
LTC Parts List
DK-DEV-5SGXEA7N Block Diagram
DK-DEV-5SGXEA7N Power Tree
DK-DEV-5SGXEA7N Power Tree No TI
Terasic TR4 Stratix IV Board
TR4 Stratix IV Board
LTC Parts List
TR4 Stratix IV Block Diagram
TR4 Stratix IV Power Tree
Terasic DE4 Development and Education Board
DE4 Dev Kit
DE4 Block Diagram
DE4 Power Tree
Altera Stratix IV GX FPGA Development Kit
DK-DEV-4SGX230N Dev Kit
LTC Parts List
DK-DEV-4SGX230N Block Diagram
DK-DEV-4SGX230N Power Tree
Altera Audio Video Development Kit, Stratix IV GX Edition
DK-VIDEO-4SGX230N Dev Kit
LTC Parts List
DK-VIDEO-4SGX230N Block Diagram
DK-VIDEO-4SGX230N Power Tree
Terasic TR5-Lite Stratix V FPGA Development Kit
TR5-Lite Dev Kit
TR5-Lite Block Diagram
TR5-Lite Power Tree
Terasic DE5-Net Stratix V Board
DE5-Net Dev Kit
LTC Parts List
DE5-Net Block Diagram
DE5-Net Power Tree
Terasic C5G Cyclone V GX Starter Kit
C5G Starter Kit
CSG Block Diagram
C5G Power Tree

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