LM5000 (正在供货)

宽输入电压 2A 开关模式稳压器

宽输入电压 2A 开关模式稳压器 - LM5000


The LM5000 is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/OFF control. There are two operating frequency ranges available. The LM5000-3 is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open). The LM5000-6 is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package.


  • 80V internal switch
  • Operating input voltage range of 3.1V to 40V
  • Pin selectable operating frequency
       300kHz/700kHz (-3)
       600kHz/1.3MHz (-6)
  • Adjustable output voltage
  • External compensation
  • Input undervoltage lockout
  • Softstart
  • Current limit
  • Over temperature protection
  • External shutdown
  • Small 16-Lead TSSOP or 16-Lead LLP package

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    参数 与其它产品相比 升压转换器 (集成开关)

    Vin (Min) (V)
    Vin (Max) (V)
    Vout (Min) (V)
    Vout (Max) (V)
    Switch Current Limit (Typ) (A)
    Regulated Outputs (#)
    Switching Frequency (Min) (kHz)
    Switching Frequency (Max) (kHz)
    Iq (Typ) (mA)
    Duty Cycle (Max) (%)
    Operating Temperature Range (C)
    Package Group
    LM5000 LM2585 LM2586 LM2587
    3.1    4    4    4   
    40    40    40    40   
    1.259    1.23    1.23    1.23   
    75    60    60    60   
    2    4    4    6.5   
    1    1    1    1   
    300    85    75    85   
    1300    115    125    115   
    2.1    11    11    11   
    Enable      Enable
    Frequency Synchronization   
    90    98    98    98   
    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
    Catalog    Catalog    Catalog    Catalog   
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    WEBENCH® Designer LM5000

      最小   最大 范围
    输入电压  V 3.1 to 40.0V
    输出电压  V 3.1 to 80.0V
    输出电流  A ≤ 2.7A
    环境温度  °C -40 to 125°C

    覆盖面积 BOM成本 效率

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