LT3070
Info : RECOMMENDED FOR NEW DESIGNS
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LT3070

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

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Models 6
1ku List Price Starting From $5.02
Features
  • 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
Additional Details
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The LT3070 is a low 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, saving bulk capacitance and cost. The LT3070’s features make it ideal for high performance FPGAs, microprocessors or sensitive communication supply applications.

Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. A margining function allows the user to adjust system output voltage in increments of ±1%, ±3% or ±5%. The IC incorporates a unique tracking function to control a buck regulator powering the LT3070’s input. This tracking function drives the buck regulator to maintain the LT3070’s input voltage to VOUT + 300mV, minimizing power dissipation.

Internal protection includes UVLO, reverse-current protection, precision current limiting with power foldback and thermal shutdown. The LT3070 regulator is available in a thermally enhanced 28-lead, 4mm × 5mm QFN package.

Applications

  • FPGA and DSP Supplies
  • ASIC and Microprocessor Supplies
  • Servers and Storage Devices
  • Post Buck Regulation and Supply Isolation
Part Models 6
1ku List Price Starting From $5.02

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Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3070EUFD#PBF
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LT3070EUFD#TRPBF
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LT3070IUFD#PBF
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LT3070IUFD#TRPBF
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LT3070MPUFD#PBF
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LT3070MPUFD#TRPBF
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Software & Part Ecosystem

Evaluation Kits 1

reference details image

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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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

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

Product Detail

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.

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs 9

Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Top View

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Xilinx Virtex 7 PCI Express Gen 3/100Gig Networking Card

Xilinx Virtex 7 PCI Express Gen 3/100Gig Networking Card

Circuits from the lab

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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
View Detailed Reference Design external link
Virtex-7™  10G/40G/100G Optical Interface FPGA Platform

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Xilinx Virtex-7 10G/40G/100G Optical Interface FPGA Platform

Xilinx Virtex-7 10G/40G/100G Optical Interface FPGA Platform

Circuits from the lab

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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
View Detailed Reference Design external link
HTG-K7-PCIE Dev Board

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Xilinx Kintex®-7 PCI Express Development Board

Xilinx Kintex®-7 PCI Express Development Board

Circuits from the lab

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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
View Detailed Reference Design external link
Stratix V Advanced System Development Board

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Stratix V Advanced System Development Board

Stratix V Advanced System Development Board

Circuits from the lab

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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
View Detailed Reference Design external link
DK-100G-5SGXEA7N Dev Kit

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Altera 100G Development Kit, Stratix V Edition

Altera 100G Development Kit, Stratix V Edition

Circuits from the lab

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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
View Detailed Reference Design external link
Xilinx VU37P Board

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HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board

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.

View Detailed Reference Design external link
Virtex™ -7 V2000T PCI Express Dev Board

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Xilinx Virtex-7 V2000T PCI Express Development Board

Xilinx Virtex-7 V2000T PCI Express Development Board

Circuits from the lab

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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
View Detailed Reference Design external link
Virtex™ -7 High-End Networking Card With Dual CXP Ports

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Xilinx Virtex™ -7 High-End Networking Card With Dual CXP Ports

Xilinx Virtex™ -7 High-End Networking Card With Dual CXP Ports

Circuits from the lab

tooltip Info:Circuits from the lab

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
View Detailed Reference Design external link
Xilinx Zynq Networking Platform

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Xilinx Zynq Networking Platform

Xilinx Zynq Networking Platform

Circuits from the lab

tooltip Info:Circuits from the lab

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
View Detailed Reference Design external link

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