參數(shù)資料
    型號: LTC4252A-1IMS#TRPBF
    廠商: Linear Technology
    文件頁數(shù): 22/36頁
    文件大?。?/td> 328K
    描述: IC CNTRLR HOTSWAP NEGVOLT 10MSOP
    標(biāo)準(zhǔn)包裝: 2,500
    類型: 熱交換控制器
    應(yīng)用: 通用
    內(nèi)部開關(guān):
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
    供應(yīng)商設(shè)備封裝: 10-MSOP
    包裝: 帶卷 (TR)
    LTC4252-1/LTC4252-2
    LTC4252A-1/LTC4252A-2
    22
    425212fe
    For more information www.linear.com/LTC4252-1
    applicaTions inForMaTion
    At time point 8, the load current falls and the SENSE voltage
    drops below V
    ACL
    (t). The analog current limit loop shuts
    off and the GATE pin ramps further. At time point 9, the
    SENSE voltage drops below V
    CB
    , the fault TIMER cycle
    ends, followed by a 5.8礎(chǔ) discharge cycle (cool off). The
    duration between time points 7 and 9 must be shorter than
    one circuit breaker delay to avoid a fault time out during
    GATE ramp-up. When GATE ramps past the V
    GATEH
     thresh-
    old at time point 10, PWRGD pulls low. At time point?1,
    GATE reaches its maximum voltage as determined by V
    IN
    .
    Live Insertion with Short Pin Control of UV/OV
    In the example shown in Figure 10, power is delivered
    through long connector pins whereas the UV/OV divider
    makes contact through a short pin. This ensures the power
    connections are firmly established before the LTC4252 is
    activated. At time point 1, the power pins make contact
    and V
    IN
     ramps through V
    LKO
    . At time point 2, the UV/OV
    divider makes contact and its voltage exceeds V
    UVHI
    . In
    addition, the internal logic checks for OV < V
    OVHI
    , GATE
    < V
    GATEL
    ,
     
    SENSE < V
    CB
    , SS < 20 " V
    OS
     and TIMER <
    V
    TMRL
    . If all conditions are met, an initial timing cycle
    starts and the TIMER capacitor is charged by a 5.8礎(chǔ)
    current source pull-up. At time point 3, TIMER reaches the
    V
    TMRH
     threshold and the initial timing cycle terminates.
    The TIMER capacitor is quickly discharged. At time point
    4, the V
    TMRL
     threshold is reached and the conditions of
    GATE < V
    GATEL
    , SENSE < V
    CB
    and SS < 20 " V
    OS
     must be
    GND  V
    EE
     OR
    (48RTN)  (48V)
    UV/OV
    V
    IN
    TIMER
    GATE
    V
    LKO
    SENSE
    V
    IN
     CLEARS V
    LKO
    , CHECK UV > V
    UVHI
    , OV < V
    OVLO
    , GATE < V
    GATEL
    , SENSE < V
    CB
    , SS < 20 " V
    OS
     AND TIMER < V
    TMRL
    V
    OUT
    1   2
    3 4 56    7   8
    V
    ACL
    V
    CB
    9
    TIMER CLEARS V
    TMRL
    , CHECK GATE < V
    GATEL
    , SENSE < V
    CB
     AND SS < 20 " V
    OS
    SS
    DRAIN
    PWRGD
    230礎(chǔ) + 8 " I
    DRN
    5.8礎(chǔ)
    20 " V
    OS
    58礎(chǔ)
    1011
    V
    IN
      V
    GATEH
    V
    DRNL
    V
    DRNCL
    20 " (V
    CB
     + V
    OS
    )
    20 " (V
    ACL
     + V
    OS
    )
    V
    GATEL
    V
    TMRL
    V
    TMRH
    5.8礎(chǔ)
    5.8礎(chǔ)
    58礎(chǔ)
    425212 F09
    GATE
    START-UP
    INITIAL TIMING
    Figure 9. System Power-Up Timing (All Waveforms Are Referenced to V
    EE
    )
    相關(guān)PDF資料
    PDF描述
    LTC4253ACGN#TRPBF IC HOT SWAP CONTRLR -48V 16-SSOP
    LTC4257CS8 IC CTRLR INTFACE PWR/ETHER 8SOIC
    LTC4260IUH#PBF IC HOT SWAP CNTRL I2C 32-QFN
    LTC4261IGN-2#PBF IC CTRLR HOTSWAP W/ADC 28-SSOP
    LTC4263IS#TRPBF IC IEEE 803.2AF CNTRLR 14-SOIC
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    LTC4252A-2 制造商:LINER 制造商全稱:Linear Technology 功能描述:–48V Hot Swap Controllers
    LTC4252A-2CMS 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
    LTC4252A-2CMS#PBF 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
    LTC4252A-2CMS#TR 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件
    LTC4252A-2CMS#TRPBF 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件