RadioLocman.com Electronics ru
Advanced Search +
  

ManufacturerLinear Technology
SeriesLTC3883

Datasheets

  • Download » Datasheet, PDF, 1.9 Mb, Revision: E, File uploaded 03-27-2018
    LTC3883/LTC3883-1- Single Phase Step-Down DC/DC Controller with Digital Power System Management
    Docket ↓
    LTC3883/LTC3883-1
    Single Phase Step-Down
    DC/DC Controller with Digital
    Power System Management
    DESCRIPTION FEATURES PMBus/I2C Compliant Serial Interface
    nn Telemetry Read-Back Includes V , I , V
    IN IN OUT,
    IOUT, Temperature and Faults
    nn Programmable Voltage, Current Limit, Digital
    Soft-Start/Stop, Sequencing, Margining, OV/UV/OC
    and Frequency Synchronization (250kHz to 1MHz)
    n ±0.5% Output Voltage Accuracy over Temperature
    n Integrated 16-Bit ADC and 12-Bit DAC
    n Integrated High Side Current Sense Amplifier
    n Internal EEPROM with ECC and Fault Logging
    n Integrated N-Channel MOSFET Gate Drivers
    Power Conversio Wide V Range: 4.5V to 24V
    IN
    n V
    OUT Range: 0.5V to 5.4V
    n Analog Current Mode Control Loop
    n Accurate PolyPhase® Current Sharing for
    Up to 6 Phases ...

Prices

Packaging

Parametrics

LTC3883EUH#PBFLTC3883EUH#TRPBFLTC3883EUH-1#PBFLTC3883EUH-1#TRPBFLTC3883IUH#PBFLTC3883IUH#TRPBFLTC3883IUH-1#PBFLTC3883IUH-1#TRPBF
ADC16-Bit16-Bit16-Bit16-Bit16-Bit16-Bit16-Bit16-Bit
DAC12-Bit12-Bit12-Bit12-Bit12-Bit12-Bit12-Bit12-Bit
Demo BoardsDC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890ADC2052A,DC1778B-A,DC1890A
Design ToolsLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino FileLTspice File,LTpowerCAD File,LTpowerPlay ,Linduino File
Export Controlnononononononono
FeaturesBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External SynchronizationBurst Mode, Differential Remote Sense, PolyPhase, PMBus, I2C Control, EEPROM, ADC, DCR Current Sense, Sequencing, Margining, Tracking, External Synchronization
FunctionDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System ManagementDC/DC Regulator With Power System Management
I/OPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2CPMBus/SMBus/I2C
Isupply, mA2020202020202020
MonitorsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and FaultsVin, Iin, Vout, Iout, Temperature and Faults
Number of Outputs11111111
Operating Temperature Range, °C0 to 850 to 850 to 850 to 85-40 to 85-40 to 85-40 to 85-40 to 85
SubnameLTC3883LTC3883LTC3883LTC3883LTC3883LTC3883LTC3883LTC3883
Supply Voltage Range4.5V to 24V4.5V to 24V4.5V to 24V4.5V to 24V4.5V to 24V4.5V to 24V4.5V to 24V4.5V to 24V
Vin Max, V2424242424242424
Vin Min, V4.54.54.54.54.54.54.54.5

Eco Plan

Application Notes

  • Download » Application Notes - AN137, PDF, 540 Kb, 09-20-2012
    Accurate Temperature Sensing with an External P-N Junction
    Many Linear Technology devices use an external PNP transistor to sense temperature. Common examples are LTC3880, LTC3883 and LTC2974. Accurate temperature sensing depends on proper PNP selection, layout, and device configuration. This application note reviews the theory of temperature sensing and gives practical advice on implementation.
    Docket ↓
    Application Note 137
    May 2012
    Accurate Temperature Sensing with an External P-N
    Junction
    Michael Jones
    Introduction Temperature Sensing Theory Many Linear Technology devices use an external PNP
    transistor to sense temperature. Common examples are
    LTC3880, LTC3883 and LTC2974. Accurate temperature
    sensing depends on proper PNP selection, layout, and
    device configuration. This application note reviews the
    theory of temperature sensing and gives practical advice
    on implementation. Linear Technology devices use an external bipolar transistor p-n junction to measure temperature. The relationship
    between forward voltage, current, and temperature is: Why should you worry about implementing temperature
    sensing? Can’t you just put the sensor near your inductor
    and lay out your circuit any way you want? Unfortunately,
    poor routing can sacrifice temperature measurement
    performance and compensation. The purpose of this application note is to allow you the opportunity to get it right
    the first time, so you don’t have to change the layout after
    your board is fabricated.
    Why Use Temperature Sensing?
    Some Linear Technology devices measure internal and
    external temperature. Internal temperature is used to
    protect the device by shutting down operation or locking ...
  • Download » Application Notes - AN145, PDF, 3.0 Mb, 05-10-2014
    Overview of the EEPROM in LTC PSM Devices
    Docket ↓
    Application Note 145
    July 2015
    Overview of the EEPROM in LTC PSM Devices
    Nick Vergunst Introduction convenient List Of All Options Linear Technology® has a large family of devices that
    provide a great deal of power and configurability for all
    applications. These parts additionally provide onboard
    nonvolatile memory (NVM) in the form of EEPROM to
    store and recall configuration parameters and on some
    devices provide a fault log and user scratch pad. Option 1A. Manual programming with LTpowerPlay™
    Built In Programming Utility (PC->NVM) These Power System Management(PSM) devices’ architectures allow them to power up and load the desired
    configuration parameters from this NVM autonomously
    with no I2C or firmware interaction required.
    A common question customers ask is, “Now that I have
    settled on a particular configuration, how do I program
    this configuration into the chip’s onboard nonvolatile
    memory (NVM).”
    Some available options are presented in rough order of
    increasing complexity throughout the document.
    NOTE: Linear Technology strongly recommends
    Option 1 for preproduction prototyping, and
    Option 2, Option 3 or Option 4 for higher volume
    production. Option 5 is a convenient method to
    program a small quantity of loose ICs prior to board ...
  • Download » Application Notes - AN152, PDF, 169 Kb, 07-12-2016
    Power System Management Addressing
    Docket ↓
    Application Note 152
    July 2016
    Power System Management Addressing
    Michael Jones Introduction
    The foundation of all PMBus applications, including LTC®
    Power System Management (PSM), is the ability for the
    PMBus master (system host) to communicate with all
    PMBus slaves (PSM controllers, PSM managers, PSM
    µModules®, and PMBus monolithic devices) on the bus.
    Every slave on the bus must have a unique address that
    does not conflict with other devices.
    The bus master must also be able to communicate with
    PSM slaves in a few less than obvious situations: Address discovery Global actions Multiphase rails Invalid NVM Bus MUXes
    Device addressing is achieved with a combination of base
    registers plus external address select (ASEL) pins, as well
    as special global, rail, ARA, and other special addresses.
    This Application Note will present the fundamental design
    principles underlying the LTC PSM family, details on product
    family differences, as well practical examples and advice.
    Special cases, such as invalid NVM, will also be discussed.
    The benefit to you is a design that works on day one, and
    works even when things go wrong. For example, if you
    are writing to the NVM with LTpowerPlay™, and power is ...
  • Download » Application Notes - AN153, PDF, 1.3 Mb, 02-24-2016
    Linduino for Power System Management
    Docket ↓
    Application Note 153
    July 2016
    Linduino for Power System Management
    Michael Jones
    INTRODUCTION LTC3880, and the industry standards for I2C/SMBus/
    PMBus. Most Power System Management designs follow a set
    and forget model. Setup and debug of Power System
    Management (PSM) devices is simple with LTpowerPlay®
    and when combined with a bulk programing solution, there
    is no need for firmware. However, many large systems
    require a Board Management Controller (BMC), begging
    the question: “What can firmware do for PSM?” Linduino PSM hardware consists of a Linduino (DC2026),
    and a shield to connect (DC2294) the I2C pins of the
    Linduino to an PMBus/SMBus/I2C Bus of a demo board
    or product board. The foundation of PSM firmware is PMBus; the foundation
    of PMBus is SMBus; and the foundation of SMBus is I2C.
    Building a BMC that adds value with PSM firmware requires
    some level of knowledge of each protocol, or a pre-existing
    library that frees the programmer from the details. For optimal learning, start with a DC2026 (Linduino),
    DC2294 (Shield), DC1962 (Power Stick), and a Total
    Phase Beagle (I2C Sniffer). This allows programming,
    debugging, and learning of controllers (LTC388X) and
    managers (LTC297X). The Linduino® libraries handle each protocol layer, and ...
  • Download » Application Notes - AN155, PDF, 230 Kb, 01-26-2017
    Fault Log Decoding with Linduino PSM
    Docket ↓
    Application Note 155
    January 2017
    Fault Log Decoding with Linduino PSM
    Michael Jones Introduction
    LTC power system management devices are PMBus controlled point-of-load converters (LTC®388X) and power
    system managers (LTC297X). All LTC power system management (PSM) devices have a fault log that is written
    to EEPROM when there is a fault. Once the fault log is
    written, fault logs are no longer generated until they are
    re-enabled, typically after the data has been read back.
    LTpowerPlay® helps debug a system by reading the fault
    log, decoding it into human-readable format, displaying it
    and saving it to a file. A system with a board management
    controller (BMC), can also read the fault log from EEPROM
    and re-enable it. Firmware can store, transfer over a
    network and decode fault data read from a PSM device.
    The Linduino® Sketchbook contains an example sketch
    that reads fault logs, along with the supporting libraries
    for PMBus and fault log decoding.
    This application note describes the basics of reading and
    decoding fault logs using Linduino.
    Hardware
    The hardware used for this application note is:
    1. DC2026 (Linduino) ...
  • Download » Application Notes - AN166, PDF, 1.1 Mb, 04-10-2017
    In Flight Update with Linduino
    Docket ↓
    Application Note 166
    April 2017
    In Flight Update with Linduino
    Michael Jones
    INTRODUCTION TO INFLIGHT UPDATE INFLIGHT UPDATE PROCESS Inflight Update is a method of modifying the stored settings of LTC Power System Management (PSM) devices,
    including application of the new settings, to a live system1 . The general dataflow of Infight Update is a simple linear
    progression: Inflight Update is a two-stage process: EEPROM is modified
    first, and then EEPROM is copied to RAM. During stage
    one, a Board Management Controller sends new settings
    directly to the EEPROM via PMBus while the devices are
    operating normally, without impacting operation. During
    stage two, all devices switch to the new configuration via
    a reset or a power cycle2 .
    Decoupling “programming settings” from “application of
    settings” allows the EEPROM programming mechanism
    to stage, validate, and recover from programming failure
    without interruption of delivered power. This minimizes
    system downtime because all rails are power cycled only
    once per update.
    Inflight Update solves several technical and business
    problems. Fast product development increases the probability of field problems. For example, the supervisors
    might require more margin to reduce false positives.
    An FPGA image update might require small changes to ...

Design Notes

  • Download » Design Notes - DN517, PDF, 126 Kb, 07-09-2013
    High Performance Single Phase DC/DC Controller with Power System Management
    Docket ↓
    High Performance Single Phase DC/DC Controller with
    Power System Management – Design Note 517
    Yi Sun
    Introduction
    The LTC ®3883 is a single phase synchronous stepdown DC/DC controller featuring a PMBus interface
    for digital control and monitoring of key regulator
    parameters. It has integrated MOSFET gate drivers and
    can function either standalone or in a digitally managed
    system with other Linear Technology PMBus-enabled
    parts. The LTC3883 features:
    n 4.5V to 24V input voltage range and 0.5V to 5.5V
    output voltage range n ±0.5% output voltage accuracy over the full opera-tional temperature range of –40°C to 125°C n PMBus interface with programmable voltage, current limits, sequencing, margining, OV/UV thresholds, frequency synchronization and fault logging n Telemetry readback parameters including VIN, IIN,
    VOUT, IOUT, temperature and faults n External voltage dividers to set the chip address
    and default switching frequency and the output
    voltage n Input current sensing and inductor DCR autocalibration 1.8V/30A Single Phase Digital Power Supply
    with IIN Sense
    Figure 1 shows a 7V to 14V input, 1.8V/30A output
    application that features inductor DCR current sensing.
    To improve the accuracy of the DCR current sense, the
    L, LT, LTC, LTM, Linear Technology and the Linear logo are registered
    trademarks and LTpowerPlay is a trademark of Linear Technology Corporation.
    All other trademarks are the property of their respective owners. 5mΩ VIN
    7V TO 14V 10µF D1 INTVCC ...

Articles

  • Download » Articles - LT Journal, PDF, 3.1 Mb, 10-18-2012
    DC/DC Controller Combines Digital Power System Management with Analog Control Loop for 0.5% VOUT Accuracy
    Docket ↓
    design features DC/DC Controller Combines Digital Power System
    Management with Analog Control Loop for
    ±0.5% VOUT Accuracy
    Hellmuth Witte The LTC3883/-1 is a versatile, single channel, PolyPhase® capable, buck controller
    with digital power system management, high performance analog control loop,
    on-chip drivers, remote output voltage sensing and inductor temperature sensing.
    To minimize solution size and cost, the LTC3883/-1 features Linear’s patent pending
    auto-calibration routine to measure the DC resistance of the inductor to obtain
    accurate output current measurements when the cycle-by-cycle current is measured
    across the inductor (lossless DCR sensing). The LTC3883/-1 is based on the popular
    dual channel LTC3880/-1, described in the January 2012 issue of LT Journal.
    DIGITAL POWER MANAGEMENT In today’s data center systems the challenge is to “go green” by becoming as
    efficient as possible at all levels of the
    system—including the point of load, the
    board, rack and even installation levels. For instance, overall system power
    consumption can be reduced by routing
    the workflow to as few servers as possible,
    shutting down servers that are not needed
    at the time. The only way to do this and
    meet system performance targets (compute
    speed, data rate, etc.) is to implement a
    comprehensive digital power management system that monitors real-time
    power-consumption data at all levels. ...
  • Download » Articles - LT Journal, PDF, 2.6 Mb, 01-17-2013
    High Performance Single Phase DC/DC Controller with Digital Power Management
    Docket ↓
    design ideas High Performance Single Phase DC/DC Controller with
    Digital Power Management
    Yi Sun LTC3883 is a single phase
    synchronous step-down
    DC/DC controller featuring
    a PMBus interface for digital
    control and monitoring,
    and integrated MOSFET
    gate drivers. It can function
    either standalone or in a
    digitally managed system
    with other Linear Technology
    PMBus enabled parts. 5mΩ VIN
    6V TO 24V 10µF
    100Ω 1µF 100Ω 10nF
    3Ω 10nF
    VIN
    10k
    10k PMBus
    INTERFACE 10k
    10k
    10k
    10k ±0.5% output voltage accuracy over the ...

Moldel Line

Series: LTC3883 (8)

Manufacturer's Classification

  • Power Management > Switching Regulator > Digitally Programmable Regulators
  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers
  • Monitor, Control and Protection > Digital Power System Management > DC/DC Regulator With Power System Management

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus