LTC3880
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

LTC3880

Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Show More showmore-icon

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 16
1ku List Price Starting From $6.37
Features
  • PMBus/I2C Compliant Serial Interface
  • Telemetry Read Back includes VIN, IIN, VOUT, IOUT, Temperature and Faults
  • Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV and Frequency Synchronization (250kHz to 1MHz)
  • ±0.5% Output Voltage Accuracy Over Temperature
  • Integrated 16-Bit ADC
  • Internal EEPROM with ECC and Fault Logging
  • Integrated Powerful N-Channel MOSFET Gate Drivers

    Power Conversion

    • Wide VIN Range: 4.5V to 24V
    • VOUT Range: 0.5V to 5.4V (4V on VOUT0)
    • Analog Current Mode Control Loop
    • Accurate PolyPhase® Current Sharing for Up to 6 Phases
    • Available in a 40-Pin (6mm × 6mm) QFN Package
    • AEC-Q100 Qualified for Automotive Applications
Additional Details
show more Icon

The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay software development tool with graphical user interface (GUI).

Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See comparison to LTC3887 below.

VOUT Start-Up Time Max VOUT0/1 Fast ADC Mode for 1 Parameter
LTC3887/LTC3887-1 35ms 5.5V/5.5V No
LTC3880/LTC3880-1 120ms 4V/5.4V No

Applications

  • High Current Distributed Power Systems
  • Telecom, Datacom and Storage Systems
  • Intelligent Energy Efficient Power Regulation
Part Models 16
1ku List Price Starting From $6.37

close icon
Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3880EUJ#PBF
  • HTML
  • HTML
LTC3880EUJ#TRPBF
  • HTML
  • HTML
LTC3880EUJ#WPBF
  • HTML
  • HTML
LTC3880EUJ#WTRPBF
  • HTML
  • HTML
LTC3880EUJ-1#PBF
  • HTML
  • HTML
LTC3880EUJ-1#TRPBF
  • HTML
  • HTML
LTC3880EUJ-1#WPBF
  • HTML
  • HTML
LTC3880EUJ-1#WTRPBF
  • HTML
  • HTML
LTC3880IUJ#PBF
  • HTML
  • HTML
LTC3880IUJ#TRPBF
  • HTML
  • HTML
LTC3880IUJ#WPBF
  • HTML
  • HTML
LTC3880IUJ#WTRPBF
  • HTML
  • HTML
LTC3880IUJ-1#PBF
  • HTML
  • HTML
LTC3880IUJ-1#TRPBF
  • HTML
  • HTML
LTC3880IUJ-1#WPBF
  • HTML
  • HTML
LTC3880IUJ-1#WTRPBF
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 14

reference details image

DC1753B-B

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

zoom

DC1753B-B

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

Product Detail

Demonstration circuit 1753B-B is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current with the inductor DCR and has a default switching frequency of 425kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 

reference details image

DC1753B-A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

zoom

DC1753B-A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

Product Detail

Demonstration circuit 1753B-A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current across a sense resistor and has a default switching frequency of 350kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 


 


reference details image

DC1590B-B

LTC3880EUJ Demo Board (DCR) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

zoom

DC1590B-B

LTC3880EUJ Demo Board (DCR) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

LTC3880EUJ Demo Board (DCR) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

Product Detail

Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency of 350kHz, and DC1590B-B senses output current with the inductor DCR and has a default switching frequency of 425kHz. Either version can be populated with the LTC3880EUJ-1 (which allows the user to provide bias power to the IC from an external power supply) instead of the LTC3880EUJ. These boards provide two programmable outputs of 20A each. The factory default settings are 1.8V for each output.

reference details image

DC1590B-A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

zoom

DC1590B-A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

Product Detail

Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency of 350kHz, and DC1590B-B senses output current with the inductor DCR and has a default switching frequency of 425kHz. Either version can be populated with the LTC3880EUJ-1 (which allows the user to provide bias power to the IC from an external power supply) instead of the LTC3880EUJ. These boards provide two programmable outputs of 20A each. The factory default settings are 1.8V for each output.

reference details image

DC1753A-A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

zoom

DC1753A-A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

Product Detail

Demonstration circuit 1753A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power management. The DC1753A-A senses inductor current across a sense resistor. Default switching Freq = 350kHz. The demo board can be populated with the LTC3880EUJ-1, which allows the user to provide bias power to the IC from an external power supply. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V.

reference details image

DC1709A

LTC3880/-1 & LTC3887/-1 Demo Board I Programming Clamshell Socketed Demo Board

reference details image

DC2052A

LTC3880EUJ/LTC3883EUH | 3-Phase Demo Board, VIN Range: 6.5V to 14V, VOUT Range: 0.5V to 1.8V @ 60A, PMBus Controlled, Works with DC1613 Dongle

zoom

DC2052A

LTC3880EUJ/LTC3883EUH | 3-Phase Demo Board, VIN Range: 6.5V to 14V, VOUT Range: 0.5V to 1.8V @ 60A, PMBus Controlled, Works with DC1613 Dongle

LTC3880EUJ/LTC3883EUH | 3-Phase Demo Board, VIN Range: 6.5V to 14V, VOUT Range: 0.5V to 1.8V @ 60A, PMBus Controlled, Works with DC1613 Dongle

Product Detail

Demonstration circuit 2052A is a 3-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3883EUH, a single-phase current mode controller with input current sensing capability. Both devices have a PMBus interface and the power system management functions.


The input voltage range of this board is from 6.5V to 14V. The output voltage can be programmed from 0.5V to 1.8V, with an output current of up to 60A total. The factory default setting for the output voltage is 1.0V.

reference details image

DC1740A-A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

zoom

DC1740A-A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

Product Detail

Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-A is a two chip 4-phase single-output configuration. The default output setting is VOUT0 = 1.2V/80A.


The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board.

reference details image

DC1740A-B

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

zoom

DC1740A-B

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

Product Detail

Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-B is a two chip 3 + 1 phase dual-output configuration. The default output settings are VOUT0 = 1.5V/20A and VOUT1 = 1.2V/60A.


The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board.

reference details image

DC2088A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

zoom

DC2088A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

Product Detail

Demonstration circuit 2088A is a high current, high density, two-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller. The LTC3880 has the PMBus interface and power system management functions.


 


reference details image

DC2089A-A

LTC3880EUJ/LTC3870EUFD RSENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

zoom

DC2089A-A

LTC3880EUJ/LTC3870EUFD RSENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

LTC3880EUJ/LTC3870EUFD RSENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

Product Detail

Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions.


The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The output current is up to 80A for 4-phase operation. The DC2089A has two versions, the DC2089A-A uses a current sense resistor, while the DC2089A–B has DCR current sensing. The factory default setting for the output voltage is 1.0V.


You can use a PC to reconfigure the power management features of the LTC3880 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality.

reference details image

DC2089A-B

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

zoom

DC2089A-B

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

Product Detail

Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions.


The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The output current is up to 80A for 4-phase operation. The DC2089A has two versions, the DC2089A-A uses a current sense resistor, while the DC2089A–B has DCR current sensing. The factory default setting for the output voltage is 1.0V.


You can use a PC to reconfigure the power management features of the LTC3880 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality.

reference details image

DC1962C

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

zoom

DC1962C

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

Product Detail

DC1962C Demo Board for:
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

reference details image

DC1962C-KIT

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

zoom

DC1962C-KIT

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

Product Detail

DC1962C-KIT Demo Board for:
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management


 


Evaluation Kits14

Tools & Simulations

Tools & Simulations 4

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.

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

windows iconapple iconcomputer icon
redirectbutton
Reference Designs

Reference Designs 4

DK-DEV-5AGTD7N Dev Kit

zoomopens a dialog

Altera Arria V GT FPGA Development Kit

Altera Arria V GT FPGA Development Kit

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