LT3070

RECOMMENDED FOR NEW DESIGNS

5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator

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Overview

  • Output Current: 5A
  • Dropout Voltage: 85mV Typical
  • Digitally Programmable VOUT : 0.8V to 1.8V
  • Digital Output Margining: ±1%, ±3% or ±5%
  • Low Output Noise: 25μVRMS (10Hz to 100kHz)
  • Parallel Multiple Devices for 10A or More
  • Precision Current Limit: ±20%
  • ±1% Accuracy Over Line, Load and Temperature
  • Stable with Low ESR Ceramic Output Capacitors (15μF Minimum)
  • High Frequency PSRR: 30dB at 1MHz
  • Enable Function Turns Output On/Off
  • VIOC Pin Controls Buck Converter to Maintain Low Power Dissipation and Optimize Efficiency
  • PWRGD/UVLO/Thermal Shutdown Flag
  • Current Limit with Foldback Protection
  • Thermal Shutdown
  • 28-Lead (4mm × 5mm × 0.75mm) QFN Package
LT3070
5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
0.9V, 5A Regulator Dropout Voltage Product Package 1
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Documentation

Data Sheet 1

User Guide 1

Design Note 1

Technical Articles 1

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
LDO Linear Regulators 1
LT3071
RECOMMENDED FOR NEW DESIGNS 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining
Power System Management (PSM) & Sequencers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LT3070
  • LT3070-1
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
DC1433A

LT3070EUFD Demo Board | 5A, Low Noise, Digitally Prog Output, Very Low Dropout Linear Regulator, 1.2V ≤ VIN ≤ 3V, VOUT = 0.8V to 1.8V @ 5A

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Product Details

Demonstration circuit 1433 is an adjustable 5A linear regulator featuring the LT3070. The LT3070 is a low dropout voltage, UltraFast™ transient response linear regulator. The device supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS. The LT3070’s high bandwidth permits the use of low ESR ceramic capacitors. Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. The demo board has a 1.2V to 3V input voltage range and a 2.5V to 3.6V BIAS voltage range. A margining function allows the user to tolerance system output voltage in increments of ±1%, ±3% or ±5%. To maintain proper performance and regulation, the BIAS supply voltage must be higher than the IN supply voltage. For a given VOUT, the BIAS voltage must satisfy the following conditions: 2.2 ≤ VBIAS ≤ 3.6V and VBIAS ≥ (1.25 · VOUT + 1V).


For VOUT ≤ 0.95V, the minimum bias voltage is limited to 2.2V.
DC1433A
LT3070EUFD Demo Board | 5A, Low Noise, Digitally Prog Output, Very Low Dropout Linear Regulator, 1.2V ≤ VIN ≤ 3V, VOUT = 0.8V to 1.8V @ 5A
DC1433A - Schematic

Reference Designs

DK-100G-5SGXEA7N Dev Kit
DK-100G-5SGXEA7N Dev Kit
DK-100G-5SGXEA7N Parts List
DK-100G-5SGXEA7N Block Diagram
DK-100G-5SGXEA7N Block Diagram
DK-100G-5SGXEA7N Power Tree
Altera 100G 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
Xilinx Zynq Networking Platform
Xilinx Zynq Networking Platform
HTG-Z7-PCIE Block Diagram
HTG-Z7-PCIE Power Tree
Xilinx Zynq Networking Platform 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
Virtex™ -7 V2000T PCI Express Dev Board
Virtex™ -7 V2000T PCI Express Dev Board
HTG-V7-PCIE Block Diagram
HTG-V7-PCIE Power Tree
Xilinx Virtex-7 V2000T PCI Express 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
Virtex™ -7 High-End Networking Card With Dual CXP Ports
Virtex™ -7 High-End Networking Card With Dual CXP Ports
HTG-V7-PCIE-CXP Block Diagram
HTG-V7-PCIE-CXP Power Tree
Xilinx Virtex™ -7 High-End Networking Card With Dual CXP Ports 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
HTG-K7-PCIE Dev Board
HTG-K7-PCIE Dev Board
HTG-K7-PCIE Reference Design
HTG-K7-PCIE Power Tree
Xilinx Kintex®-7 PCI Express 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
Virtex-7™ 10G/40G/100G Optical Interface FPGA Platform
Virtex-7™ 10G/40G/100G Optical Interface FPGA Platform
HTG-V7-OPTIC Block Diagram
HTG-V7-OPTIC Power Tree
Xilinx Virtex-7 10G/40G/100G Optical Interface FPGA Platform 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
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Top View
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Top View
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Bottom View
HTG-V7-G3PCIE Block Diagram
HTG-V7-G3PCIE Power Tree
Xilinx Virtex 7 PCI Express Gen 3/100Gig Networking Card 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
Xilinx VU37P Board
Xilinx VU37P Board
HTG-937 Block Diagram
HTG-937 Actual Power Tree Picture
HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board Circuits from the lab

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Features and Benefits

The HTG-937 provides access to large FPGA gate density and 8GB/16GB of high bandwidth memory. It is populated with the Xilinx Zynq Virtex Ultrascale VU37P, or VU47P. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Virtex Ultrascale FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-937 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.
Altera 100G Development Kit, Stratix V Edition
DK-100G-5SGXEA7N Dev Kit
DK-100G-5SGXEA7N Parts List
DK-100G-5SGXEA7N Block Diagram
DK-100G-5SGXEA7N Block Diagram
DK-100G-5SGXEA7N Power Tree
Xilinx Zynq Networking Platform
Xilinx Zynq Networking Platform
HTG-Z7-PCIE Block Diagram
HTG-Z7-PCIE Power Tree
Xilinx Virtex-7 V2000T PCI Express Development Board
Virtex™ -7 V2000T PCI Express Dev Board
HTG-V7-PCIE Block Diagram
HTG-V7-PCIE Power Tree
Xilinx Virtex™ -7 High-End Networking Card With Dual CXP Ports
Virtex™ -7 High-End Networking Card With Dual CXP Ports
HTG-V7-PCIE-CXP Block Diagram
HTG-V7-PCIE-CXP Power Tree
Xilinx Kintex®-7 PCI Express Development Board
HTG-K7-PCIE Dev Board
HTG-K7-PCIE Reference Design
HTG-K7-PCIE Power Tree
Xilinx Virtex-7 10G/40G/100G Optical Interface FPGA Platform
Virtex-7™ 10G/40G/100G Optical Interface FPGA Platform
HTG-V7-OPTIC Block Diagram
HTG-V7-OPTIC 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
Xilinx Virtex 7 PCI Express Gen 3/100Gig Networking Card
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Top View
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Bottom View
HTG-V7-G3PCIE Block Diagram
HTG-V7-G3PCIE Power Tree
HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board
Xilinx VU37P Board
HTG-937 Block Diagram
HTG-937 Actual Power Tree Picture

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