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

LM5000
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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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    WEBENCH® Designer LM5000

    Topology Option
    Product Option
      Min   Max Range
    Vin  V
    Vout  V
    Iout  A
    Ambient Temp  °C -40 to 125°C

    参数

    与其它产品相比 升压转换器(集成开关) 邮件 下载到电子表格中
    Part number 立即下单 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) Type Rating Package Group
    LM5000 立即下单 3.1     40     1.259     75     2     1     300     1300     2.1     Enable     90     -40 to 125     Converter     Catalog     TSSOP | 16
    WSON | 16    
    LM2585 立即下单 4     40     1.23     60     4     1     85     115     11       98     -40 to 125     Converter     Catalog     DDPAK/TO-263 | 5
    TO-220 | 5    
    LM2586 立即下单 4     40     1.23     60     4     1     75     125     11     Enable
    Frequency Synchronization    
    98     -40 to 125     Converter     Catalog     DDPAK/TO-263 | 7
    TO-220 | 7    
    LM2587 立即下单 4     40     1.23     60     6.5     1     85     115     11       98     -40 to 125     Converter     Catalog     DDPAK/TO-263 | 5
    TO-220 | 5    
    TPS55340 立即下单 2.9     32     3     38     6.6     1     100     1200     0.5     Enable
    Frequency Synchronization
    Light Load Efficiency    
    90     -40 to 150     Converter     Catalog     HTSSOP | 14
    WQFN | 16