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    LTC2970CUFD#TR 参数 Datasheet PDF下载

    LTC2970CUFD#TR图片预览
    型号： LTC2970CUFD#TR
    PDF下载： 下载PDF文件 查看货源
    内容描述： [LTC2970 - Dual I<sup>2</sup>C Power Supply Monitor and Margining Controller; Package: QFN; Pins: 24; Temperature Range: 0&deg;C to 70&deg;C]
    分类和应用： 可编程只读存储器电动程控只读存储器电可擦编程只读存储器
    文件页数/大小： 80 页 / 1131 K
    品牌： LINEAR [ LINEAR INTEGRATED SYSTEMS ]
     浏览型号LTC2970CUFD#TR的Datasheet PDF文件第1页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第2页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第4页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第5页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第6页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第7页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第8页浏览型号LTC2970CUFD#TR的Datasheet PDF文件第9页  
    LTC2978
    TABLE OF CONTENTS
    MFR_RETRY_DELAY ..........................................48
    MFR_RESTART_DELAY ...................................... 49
    MFR_VOUT_PEAK .............................................. 49
    MFR_VIN_PEAK ................................................. 49
    MFR_TEMPERATURE_PEAK .............................. 49
    MFR_DAC ...........................................................50
    MFR_POWERGOOD_ASSERTION_DELAY .........50
    Watchdog Operation ...............................................50
    MFR_WATCHDOG_T_FIRST and MFR_
    WATCHDOG_T ....................................................50
    MFR_PAGE_FF_MASK ....................................... 51
    MFR_PADS......................................................... 52
    MFR_I2C_BASE_ADDRESS ............................... 52
    MFR_SPECIAL_ID .............................................. 52
    MFR_SPECIAL_LOT ...........................................53
    MFR_VOUT_DISCHARGE_THRESHOLD .............53
    MFR_COMMON ..................................................53
    MFR_SPARE0.....................................................53
    MFR_SPARE2.....................................................53
    MFR_VOUT_MIN ................................................54
    MFR_VIN_MIN ...................................................54
    MFR_TEMPERATURE_MIN ................................54
    Fault Log Operation ................................................54
    MFR_FAULT_LOG_STORE .................................55
    MFR_FAULT_LOG_RESTORE .............................55
    MFR_FAULT_LOG_CLEAR..................................55
    MFR_FAULT_LOG_STATUS ................................55
    MFR_FAULT_LOG ...............................................56
    Applications Information ................................ 62
    Overview .................................................................62
    Powering the LTC2978............................................62
    Setting Command Register Values .........................62
    Sequence, Servo, Margin and Restart Operations ..62
    Command Units On or Off ..................................62
    On Sequencing ...................................................63
    On State Operation .............................................63
    Servo Modes ......................................................63
    DAC Modes.........................................................63
    Margining ...........................................................64
    Off Sequencing ...................................................64
    V
    OUT
    Off Threshold Voltage ................................64
    Automatic Restart Via MFR_RESTART_DELAY
    Command and CONTROLn pin ...........................64
    Fault Management ..................................................64
    Output Overvoltage and Undervoltage Faults .....64
    Output Overvoltage and Undervoltage Warnings 65
    Configuring the V
    IN_EN
    Output............................65
    Multichannel Fault Management ........................ 67
    Interconnect Between Multiple LTC2978s............... 67
    Application Circuits .................................................69
    Trimming and Margining DC/DC Converters with
    External Feedback Resistors...............................69
    Four-Step Resistor Selection Procedure for DC/DC
    Converters with External Feedback Resistors.....69
    Trimming and Margining DC/DC Converters with a
    TRIM Pin ............................................................ 70
    Two-Step Resistor and DAC Full-Scale Voltage
    Selection Procedure for DC/DC Converters with a
    TRIM Pin ............................................................ 70
    Measuring Current .............................................. 71
    Measuring Current with a Sense Resistor........... 71
    Measuring Current with Inductor DCR................ 71
    Single Phase Design Example ............................72
    Measuring Multiphase Currents..........................72
    Multiphase Design Example ............................... 72
    Anti-aliasing Filter Considerations ......................73
    Sensing Negative Voltages .................................73
    Connecting the USB to I
    2
    C/SMBus/PMBus Controller
    to the LTC2978 in System....................................... 74
    LTpowerPlay: An Interactive GUI for Digital Power . 76
    PCB Assembly and Layout Suggestions .................77
    Bypass Capacitor Placement ..............................77
    Exposed Pad Stencil Design ...............................77
    PC Board Layout.................................................77
    Unused ADC Sense Inputs ..................................77
    Package Description ..................................... 78
    Revision History .......................................... 79
    Typical Application ....................................... 80
    Related Parts .............................................. 80
    2978fc
    3

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