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LM5000

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3.1-40V 宽输入电压、2A 电流模式非同步升压稳压器

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LM5158 正在供货 采用双随机展频技术的 3A、85V、2.2MHz 宽输入电压升压、反激式和 SEPIC 转换器 Newer device with higher Vout capability and higher switch current

LM5000

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产品详情

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.259 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0021 Duty cycle (max) (%) 90
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.259 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0021 Duty cycle (max) (%) 90
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) WSON (NHQ) 16 25 mm² (5 mm × 5 mm)
  • 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
  • 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

    • 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.

    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.

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    技术文档

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    顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
    * 数据表 LM5000 High Voltage Switch Mode Regulator 数据表 (Rev. D) 2007-3-9
    选择指南 电源管理指南 2018 2018-7-31
    应用手册 Automated Frequency Response Analyzer 2013-10-9
    白皮书 Wide VIN power management ICs simplify white paper (Rev. A) 2013-9-19
    白皮书 HV, Single-Chip DC/DC Reg Optimized for Flyback, Boost, or Frwd-Pwr Conv Apps 2003-10-1
    应用手册 HV, single IC DC/DC reg optimizd for flyback, boost, or forward pwr cnvrtr apps 2003-3-24

    设计与开发

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    评估板

    LM5000EVAL — 高电压开关模式稳压器

    用户指南: PDF
    支持的产品和硬件
    有库存
    限制：
    ??asset.out-of-stock-ti_zh_CN??
    无货
    计算工具

    FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

    该工具可帮助电源工程师根据规范选择合适的隔离式 DC-DC 拓扑。根据所选的拓扑，计算器还会针对设计推荐合适的 IC。

    支持的产品和硬件
    计算工具

    LM5000MATHCAD-CALC — LM5000 Mathcad 设计工具

    支持的产品和硬件
    参考设计

    PMP7932 — 适用于工业偏置电源的隔离型反激式转换器 - 参考设计

    PMP7932 是一款隔离型反激式转换器，可接受 12Vin 至 24Vin 的输入电压，并提供 +12Vout/0.25A 和 -12V/0.25A 的双极性输出。

    支持的产品和硬件
    封装 引脚 CAD 符号、封装和 3D 模型
    TSSOP (PW) 16 Ultra Librarian
    WSON (NHQ) 16 Ultra Librarian
    适用于评估类项目的 TI 标准条款与条件。

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