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LDO

55V CST75XX系列

    The CST7550 series is ahighvoltage，ultralow-power，low dropout voltage regulator. 

    The device can deliver 350mA output current with a dropout voltage of 350mV and allows an input voltage as high
as 55V. The typical quiescent current is only 2µA. The device is available in fixed output voltages of 1.8,2.5,2.8,3.0,3.3,3.6,4.0,4.2,4.4 and 5.0V.

    The device features integrated short-circuit and thermal shutdown protection.Although designed primarily as fixed voltage regulators, the device can be used with external components to obtain variable voltages.
    CST75XX series Description:
        The CST7550 series is ahighvoltage，ultralow-power，low dropout voltage regulator. 
        The device can deliver 350mA output current with a dropout voltage of 350mV and allows an input voltage as high
    as 55V. The typical quiescent current is only 2µA. The device is available in fixed output voltages of 1.8,2.5,2.8,3.0,3.3,3.6,4.0,4.2,4.4 and 5.0V.
        The device features integrated short-circuit and thermal shutdown protection.Although designed primarily as fixed voltage regulators, the device can be used with external components to obtain variable voltages.

    CST75XX series Features:
    Low Power Consumption: 2µA (Typ)
    Maximum Output Current: 350mA 
    Small Dropout Voltage  
        350mV@100mA (Vout=3.3V) 
    High Input Voltage: Up to 55V
    High Accurate:  
        CST7550(B)±2% Output Voltage
        CST7550(A) ±1% Output Voltage
    RoHS Compliant and Lead (Pb) Fre
    Good Transient Response
    Integrated Short-Circuit Protection
    Over-Temperature Protection
    Output Current Limit
    Stable with Ceramic Capacitor
    Support Fixed Output Voltage
        1.8,2.5,3.0,3.3,3.6,4,0,4.2 and 5.0V
    Available Package
    SOT23-3/SOT89-3

    CST75XX series Application:
    Portable, Battery Powered Equipment
    Smoke detector and sensor 
    Battery-powered equipment
    Audio/Video Equipmen
    Weighting Scales
    Home Automation

    CST75XX series Application Circuits:


    CST75XX series  Pin Configuration:


    CST75XX series Pin Description:


    CST75XX series Order Information:
    CST7533①②③④⑤
    Designator
    Symbol
    Description
    ①②
    S3/P3
    SOT23-3L/SOT89-3L
    ③④
    Integer
    Output Voltage 1.8,2.5,2.8,3.0,3.3,3.6,4.0,4.2and5.0
    ⑤
    A
    Accurate±1%
    B
    Accurate±2%

    Model
    Marking
    Description
    Package
    T/R Qty
    CST7550S3-XX*
    AHXXA(B)
    CST7550 55V;2μAIQ
    350mA Low-Dropout LDO
    SOT23-3L
    3000PCS
    CST7550P3-XX*
    AHXXA(B)
    SOT89-3L
    1000PCS

    Note:(*)XX Represents the Output Voltage


    CST75XX series Marking Information:
    ①②Represents the product name
    Mark①②
    Product Series
    AH
    CST7550 S3/P3
    ③④Represents the Output Voltage
    Mark
    Output Voltage(V)
    Mark
    Output Voltage(V)
    18
    —
    1.8
    —
    36
    —
    3.6
    —
    25
    —
    2.5
    —
    40
    —
    4.0
    —
    28
    —
    2.8
    —
    42
    —
    4.2
    —
    30
    —
    3.0
    —
    50
    —
    5.0
    —
    33
    —
    3.3
    —
    —
    —
     
    —
    ⑤Represents the Output Voltage Accurate
    Mark⑤
    Product Series
    ±1% Output Voltage
    ±2%Output Voltage
    CST7550(AorB)
    A
    B


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