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    參數(shù)資料
    型號： LS2540-9PD6TB1
    廠商： POWER-ONE INC
    元件分類： 電源模塊
    英文描述： 2-OUTPUT AC-DC REG PWR SUPPLY MODULE
    封裝： METAL, CASE S02, MODULE
    文件頁數(shù)： 19/33頁
    文件大小： 438K
    代理商： LS2540-9PD6TB1
    S Series Data Sheet
    100 Watt AC-DC and DC-DC Converters
    APR 26, 2006 revised to SEP 25, 2006
    Page 26 of 33
    www.power-one.com
    Option D: Undervoltage Monitor
    The input and/or output undervoltage monitoring circuit operates
    independently of the built-in input undervoltage lockout circuit. A
    logic "low" (JFET output) or "high" signal (NPN output) is
    generated at pin 20 as soon as one of the monitored voltages
    drops below the preselected threshold level Vt. The return for
    this signal is Vo1–. The D output recovers when the monitored
    voltage(s) exceed(s) Vt + Vh. The threshold levels Vti and Vto
    are either adjustable by a potentiometer, accessible through a hole
    in the front cover, or factory adjusted to a fixed value specified by
    the customer.
    Option D exists in various versions D0 - DD as shown in the
    following table.
    Table 20: Undervoltage monitor functions
    Output type
    Monitoring
    Minimum adjustment range
    Typical hysteresis
    Vh [% of Vt]
    of threshold level
    Vt
    for
    Vt min - Vt max
    JFET
    NPN
    Vi
    Vo1
    Vti
    Vto
    Vhi
    Vho
    D1
    D5
    no
    yes
    -
    3.5 - 40 V
    1
    -
    2.5 - 0.6
    D2
    D6
    yes
    no
    Vi min - Vi max
    1
    -
    3.4 - 0.4
    -
    D3
    D7
    yes
    Vi min - Vi max
    1
    (0.95 - 0.985
    Vo1)
    2
    3.4 - 0.4
    "0"
    D4
    D8
    no
    yes
    -
    (0.95 - 0.985
    Vo1)
    2
    -
    "0"
    D0
    D9
    no
    yes
    -
    3.5 - 40 V
    3
    -
    2.5 - 0.6
    yes
    no
    Vi min - Vi max
    3, 4
    -
    3.4 - 0.4
    -
    yes
    Vi min - Vi max
    3, 4
    3.5 - 40 V
    3
    3.4 - 0.4
    2.5 - 0.6
    yes
    Vi min - Vi max
    3, 4
    (0.95 - 0.985
    Vo1)
    2
    3.4 - 0.4
    "0"
    -DD
    yes
    Vi min - Vi max
    1
    3.5 - 40 V
    1
    3.4 - 0.4
    2.5 - 0.6
    1 Threshold level adjustable by potentiometer
    2 Fixed value tracking if Vo1 is adjusted via R-input, option P or sense lines.
    3 The threshold level is permanently adjusted according to customer specification ±2% at 25 °C. Any value within the
    specified range is possible, but causes a new customer-specific type designation.
    4 Adjusted at Io nom
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