LM5000 宽输入电压 2A 开关模式稳压器 | 德州仪器 TI.com.cn

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
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描述

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.


特性

  • 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)
    Features
    Duty Cycle (Max) (%)
    Operating Temperature Range (C)
    Rating
    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    
    N/A    
    90     98     98     98    
    -40 to 125     -40 to 125     -40 to 125     -40 to 125    
    Catalog     Catalog     Catalog     Catalog    
    TSSOP
    WSON    
    DDPAK/TO-263
    TO-220    
    DDPAK/TO-263
    TO-220    
    DDPAK/TO-263
    TO-220    
    New! Interactive Design
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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


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