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    參數(shù)資料
    

    


    


    
型號(hào)：
MAX5942B

    

    
廠商：
Maxim Integrated Products, Inc.

    

    
英文描述：
IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices

    

    
中文描述：
IEEE 802.3af以太網(wǎng)供電接口/PWM控制器，適用于用電設(shè)備

    

    
文件頁數(shù)：
4/24頁

    

    
文件大?。?/td>
465K

    

    
代理商：
MAX5942B


    

    

    

	
    
    
    

    
    
	
    M
    IEEE 802.3af Power-Over-Ethernet
    Interface/PWM Controller for Power Devices
    4
    _______________________________________________________________________________________
    ELECTRICAL CHARACTERISTICS (PWM Controller) (continued)
    (All voltages referenced to V-. V
    DD
    = 13V, a 10μF capacitor connects V
    CC
    to V-, V
    CS
    = V-, V+ = 48V, 0.1μF capacitor connected to
    SS_
    SHDN
    , NDRV = open circuit, V
    FB
    = 3V, T
    A
    = T
    MIN
    to T
    MAX
    , unless otherwise noted. Typical values are at T
    A
    = +25
    °
    C.) (Note 1)
    PARAMETER
    SYMBOL
    I
    VDD(NS)
    I
    VDD(S)
    CONDITIONS
    MIN
    TYP
    0.9
    1.9
    180
    4
    MAX
    1.6
    3.2
    290
    20
    UNITS
    V
    DD
     = 36V, driver not switching
    V
    DD
     = 36V, driver switching, V
    OPTO
     = 4V
    V
    SS_
    SHDN
     = 0V, V+ = 67V
    V
    SS_
    SHDN
     = 0V
    V
    DD
     Supply Current
    mA
    V+ Shutdown Current
    V
    DD
     Shutdown Current
    PREREGULATORS/STARTUP
    V+ Input Voltage
    V
    DD 
    Supply Voltage
    INTERNAL REGULATORS
    μA
    μA
    18
    13
    67
    36
    V
    V
    Powered from V+, I
    CC
     = 7.5mA, V
    DD
     = 0V
    Powered from V
    DD
    , I
    CC
     = 7.5mA
    V
    CC
     falling
    7.5
    9.0
    9.8
    10.0
    6.6
    12
    11.0
    V
    CC
     Output Voltage
    V
    V
    CC
     Undervoltage Lockout
    OUTPUT DRIVER
    Peak Source Current
    Peak Sink Current
    V
    CC_UVLO
    V
    V
    CC
     = 11V (externally forced)
    V
    CC
     = 11V (externally forced)
    V
    CC
     = 11V, externally forced, NDRV
    sourcing 50mA
    570
    1000
    mA
    mA
    NDRV High-Side Driver
    Resistance
    R
    OH
    4
    12
    NDRV Low-Side Driver
    Resistance
    R
    OL
    V
    CC
     = 11V, externally forced, NDRV sinking
    50mA
    1.6
    4
    ERROR AMPLIFIER
    FB Input Resistance
    FB Input Bias Current
    Error Amplifier Gain (Inverting)
    Closed-Loop 3dB Bandwidth
    FB Input Voltage Range
    SLOPE COMPENSATION
    Slope Compensation
    THERMAL SHUTDOWN
    Thermal Shutdown Temperature
    Thermal Hysteresis
    CURRENT LIMIT
    CS Threshold Voltage
    CS Input Bias Current
    R
    IN
    I
    FB
    A
    VCL
    50
    ±1
    -20
    200
    k
    μA
    V/V
    kHz
    V
    V
    FB
     = V
    SS_
    SHDN
    2
    3
    V
    SCOMP
    MAX5942A
    26
    mV/μs
    +150
    25
    °
    C
    °
    C
    V
    ILIM
    FB = 4V
    0V 
    ≤
     V
    CS
    ≤
     2V, FB = 4V
    419
    -1
    465
    510
    +1
    mV
    μA
    Current-Limit Comparator
    Propagation Delay
    25mV overdrive on CS, FB = V-
    180
    ns
    CS Blanking Time
    OSCILLATOR
    Clock Frequency Range
    FB = GN D  onl y P W M com p ar ator i s b  anked 
    70
    ns
    FB = V-
    MAX5942A, FB = V-
    MAX5942B, FB = V-
    235
    75
    44
    275
    314
    85
    50
    kHz
    Max Duty Cycle
    %
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
MAX5942ACSE
IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices

    

    
MAX5942A-MAX5942B
Octal D-Type Positive Edge Triggered Flip-Flops with 3-State Outputs 20-CFP -55 to 125

    

    
MAX5942BCSE
Quadruple 2-Input Positive-NAND Buffers With Open-Collector Outp 14-CDIP -55 to 125

    

    
MAX5946
Dual PCI Express, Hot-Plug Controller

    

    
MAX5946AETX
Dual PCI Express, Hot-Plug Controller

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
MAX5942BCSE
功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6

    

    
MAX5942BCSE+
功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray

    

    
MAX5942BCSE+T
功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray

    

    
MAX5942BCSE-T
功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6

    

    
MAX5942BESE
功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6

    

    
    
    
    
	
    	
    
    
     
     
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