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    參數(shù)資料
    

    


    


    
型號(hào)：
MAX792LCPE

    

    
廠商：
MAXIM INTEGRATED PRODUCTS INC

    

    
元件分類：
電源管理

    

    
英文描述：
Power Supply Supervisor

    

    
中文描述：
1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16

    

    
封裝：
PLASTIC, DIP-16

    

    
文件頁(yè)數(shù)：
11/16頁(yè)

    

    
文件大?。?/td>
272K

    

    
代理商：
MAX792LCPE


    

    

    

	
    
    
    

    
    
	
    M
    Microprocessor and Nonvolatile
    Memory Supervisory Circuits
    ______________________________________________________________________________________
    11
    Reset Outputs (RESET and 
    RESET
    )
    The 
    RESET
     output is active low and typically sinks 1.6mA
    at 0.1V. When deasserted, 
    RESET
     sources 1.6mA at typi-
    cally V
    CC 
    - 1.5V. The RESET output is the inverse of
    RESET
    .
     RESET
     is guaranteed to be valid down to V
    CC
    = 1V,
    and an external 10k
     pull-down resistor on 
    RESET
    ensures that it will be valid with V
    CC
    down to GND
    (Figure 5). As V
    CC
    goes below 1V, the gate drive to the
    RESET
     output switch reduces accordingly, increasing the
    r
    DS(ON)
    and the saturation voltage. The 10k
     pull-down
    resistor ensures that the parallel combination of switch
    plus resistor will be around 10k
     and the saturation
    voltage will be below 0.4V while sinking 40μA. When
    using an external pull-down resistor of 10k
    , the high
    state for the 
    RESET
     output with V
    CC
    = 4.75V is typically
    4.60V.
    Overvoltage Comparator
    The overvoltage comparator is an uncommitted com-
    parator that has no effect on the operation of other chip
    functions. Use this input to provide overvoltage indica-
    tion by connecting a voltage divider from the input sup-
    ply, as in Figure 6. 
    Connect OVI to ground if the overvoltage function is not
    used. 
    OVO
     goes low when OVI goes above 1.30V. With
    OVI below 1.30V, 
    OVO
     is actively pulled to V
    CC
    and can
    source1μA. 
    Watchdog Function
    The watchdog monitors μP activity via the watchdog
    input (WDI). If the μP becomes inactive,
     WDO
     and 
    WDPO
    are asserted. To use the watchdog function, connect
    WDI to a μP bus line or I/O line. If WDI remains high or
    low for longer than the watchdog timeout period (1.6s
    nominal), 
    WDPO
     and 
    WDO
     are asserted, indicating a soft-
    ware fault condition (see 
    Watchdog-Pulse Output
     and
    Watchdog Output
     sections).
    Watchdog Input
    If the watchdog function is unused, connect WDI to V
    CC
    or GND. A change of state (high-to-low, low-to-high, or
    a minimum 100ns pulse) at WDI during the watchdog
    period resets the watchdog timer. The watchdog timer
    MAX792
    MAX820
    GND
    V
    CC
    REGULATOR
    R1
    R2
    R3
    R4
    TO 
    μ
    P
    TO 
    μ
    P
    TO 
    μ
    P NMI
    2
    1
    10
    RESET IN/INT
    LLIN/REFOUT
    RESET
    RESET
    LOW LINE
    V
    LOW LINE
     = 1.3     R1 + R2
                                      R2
    )
    V
    RESET
     = 1.3    R3 + R4
                                 R4
    )
    Figure 4c. Alternative Connection for External Programming Mode
    RESET
    MAX792
    MAX820
    TO 
    μ
    P RESET
    1
    10k
    Figure 5. Adding an external pull-down resistor ensures 
    RESET
    is valid with V
    CC
    down to GND.
    MAX792
    MAX820
    6
    7
    12
    GND
    3
    V
    CC
    OVI
    OVO
    OVERVOLTAGE
    VOLTAGE REGULATOR
    1.30V
    Figure 6. Detecting an Overvoltage Condition
    
    
    
    
    
    


    


    

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    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
MAX792LCPE+
功能描述:監(jiān)控電路 MPU & NV Memory Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel

    

    
MAX792LCSE
功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel

    

    
MAX792LCSE+
功能描述:監(jiān)控電路 MPU & NV Memory Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel

    

    
MAX792LCSE+T
功能描述:監(jiān)控電路 MPU & NV Memory Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel

    

    
MAX792LCSE-T
功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel

    

    
    
    
    
	
    	
    
    
     
     
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